Stocks (also capital stock, or sometimes interchangeably, shares) consist of all the
shares
In financial markets, a share (sometimes referred to as stock or equity) is a unit of equity ownership in the capital stock of a corporation. It can refer to units of mutual funds, limited partnerships, and real estate investment trusts. Sha ...
by which ownership of a
corporation
A corporation or body corporate is an individual or a group of people, such as an association or company, that has been authorized by the State (polity), state to act as a single entity (a legal entity recognized by private and public law as ...
or company is divided.
A single share of the stock means fractional ownership of the corporation in proportion to the total number of shares. This typically entitles the
shareholder
A shareholder (in the United States often referred to as stockholder) of corporate stock refers to an individual or legal entity (such as another corporation, a body politic, a trust or partnership) that is registered by the corporation as the ...
(stockholder) to that fraction of the company's earnings, proceeds from liquidation of assets (after discharge of all
senior claims such as secured and unsecured
debt
Debt is an obligation that requires one party, the debtor, to pay money Loan, borrowed or otherwise withheld from another party, the creditor. Debt may be owed by a sovereign state or country, local government, company, or an individual. Co ...
), or
voting power, often dividing these up in proportion to the number of like shares each stockholder owns. Not all stock is necessarily equal, as certain classes of stock may be issued, for example, without voting rights, with enhanced voting rights, or with a certain priority to receive profits or liquidation proceeds before or after other classes of
shareholders
A shareholder (in the United States often referred to as stockholder) of corporate stock refers to an individual or legal entity (such as another corporation, a body politic, a trust or partnership) that is registered by the corporation as the ...
.
Stock can be bought and sold
privately or on
stock exchange
A stock exchange, securities exchange, or bourse is an exchange where stockbrokers and traders can buy and sell securities, such as shares of stock, bonds and other financial instruments. Stock exchanges may also provide facilities for ...
s. Transactions of the former are closely overseen by governments and regulatory bodies to prevent fraud, protect investors, and benefit the larger economy. As
new shares are issued by a company, the ownership and rights of existing shareholders are
diluted in return for cash to sustain or grow the business. Companies can also
buy back stock, which often lets investors recoup the initial investment plus
capital gains
Capital gain is an economic concept defined as the profit earned on the sale of an asset which has increased in value over the holding period. An asset may include tangible property, a car, a business, or intangible property such as shares.
A ca ...
from subsequent rises in stock price.
Stock options issued by many companies as part of employee compensation do not represent ownership, but represent the right to buy ownership at a future time at a specified price. This would represent a windfall to the employees if the option were exercised when the market price is higher than the promised price, since if they immediately sold the stock they would keep the difference (minus taxes).
Stock bought and sold in private markets fall within the
private equity
Private equity (PE) is stock in a private company that does not offer stock to the general public; instead it is offered to specialized investment funds and limited partnerships that take an active role in the management and structuring of the co ...
realm of finance.
Shares
A person who owns a percentage of the stock has the ownership of the corporation proportional to their share. The shares form a stock; the ''stock'' of a corporation is partitioned into
shares
In financial markets, a share (sometimes referred to as stock or equity) is a unit of equity ownership in the capital stock of a corporation. It can refer to units of mutual funds, limited partnerships, and real estate investment trusts. Sha ...
, the total of which are stated at the time of business formation. Additional shares may subsequently be authorized by the existing shareholders and issued by the company. In some jurisdictions, each share of stock has a certain declared
par value
In finance and accounting, par value means stated value or face value of a financial instrument. Expressions derived from this term include at par (at the par value), over par (over par value) and under par (under par value).
Bonds
A bond selli ...
, which is a nominal accounting value used to represent the equity on the
balance sheet
In financial accounting, a balance sheet (also known as statement of financial position or statement of financial condition) is a summary of the financial balances of an individual or organization, whether it be a sole proprietorship, a business ...
of the corporation. In other jurisdictions, however, shares of stock may be issued without associated par value.
Shares represent a fraction of
ownership
Ownership is the state or fact of legal possession and control over property, which may be any asset, tangible or intangible. Ownership can involve multiple rights, collectively referred to as '' title'', which may be separated and held by dif ...
in a business. A
business
Business is the practice of making one's living or making money by producing or Trade, buying and selling Product (business), products (such as goods and Service (economics), services). It is also "any activity or enterprise entered into for ...
may declare different types (or classes) of shares, each having distinctive ownership rules, privileges, or share values. Ownership of shares may be documented by issuance of a
stock certificate
In company (law), corporate law, a stock certificate (also known as certificate of stock or share certificate) is a legal document that certifies the legal interest (a bundle of several legal rights) of ownership of a specific number of share ...
. A stock certificate is a legal document that specifies the number of shares owned by the
shareholder
A shareholder (in the United States often referred to as stockholder) of corporate stock refers to an individual or legal entity (such as another corporation, a body politic, a trust or partnership) that is registered by the corporation as the ...
, and other specifics of the shares, such as the par value, if any, or the class of the shares.
In the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
,
Republic of Ireland
Ireland ( ), also known as the Republic of Ireland (), is a country in Northwestern Europe, north-western Europe consisting of 26 of the 32 Counties of Ireland, counties of the island of Ireland, with a population of about 5.4 million. ...
,
South Africa
South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...
, and
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
, ''stock'' can also refer, less commonly, to all kinds of
marketable securities
A security is a tradable financial asset. The term commonly refers to any form of financial instrument, but its legal definition varies by jurisdiction. In some countries and languages people commonly use the term "security" to refer to any for ...
.
Types
Stock typically takes the form of shares of either
common stock
Common stock is a form of corporate equity ownership, a type of security. The terms voting share and ordinary share are also used frequently outside of the United States. They are known as equity shares or ordinary shares in the UK and other C ...
or
preferred stock
Preferred stock (also called preferred shares, preference shares, or simply preferreds) is a component of share capital that may have any combination of features not possessed by common stock, including properties of both an equity and a debt ins ...
. As a unit of ownership, common stock typically carries
voting rights
Suffrage, political franchise, or simply franchise is the right to vote in representative democracy, public, political elections and referendums (although the term is sometimes used for any right to vote). In some languages, and occasionally in ...
that can be exercised in corporate decisions.
Preferred stock
Preferred stock (also called preferred shares, preference shares, or simply preferreds) is a component of share capital that may have any combination of features not possessed by common stock, including properties of both an equity and a debt ins ...
differs from common stock in that it typically does not carry voting rights but is legally entitled to receive a certain level of
dividend
A dividend is a distribution of profits by a corporation to its shareholders, after which the stock exchange decreases the price of the stock by the dividend to remove volatility. The market has no control over the stock price on open on the ex ...
payments before any dividends can be issued to other shareholders.
[Zvi Bodie, Alex Kane, Alan J. Marcus, ''Investments'', 9th Ed., .] Convertible preferred stock is preferred stock that includes the ability of the holder to convert the preferred shares into a fixed number of common shares, usually any time after a predetermined date. Shares of such stock are called "convertible preferred shares" (or "convertible preference shares" in the UK).
New
equity issue may have specific legal clauses attached that differentiate them from previous issues of the issuer. Some shares of common stock may be issued without the typical voting rights, for instance, or some shares may have special rights unique to them and issued only to certain parties. Often, new issues that have not been registered with a securities governing body may be
restricted from resale for certain periods of time.
Preferred stock may be
hybrid by having the qualities of bonds of fixed returns and common stock voting rights. They also have preference in the payment of dividends over common stock and also have been given preference at the time of liquidation over common stock. They have other features of accumulation in dividend. In addition, preferred stock usually comes with a letter designation at the end of the security; for example, Berkshire-Hathaway
Class "B" shares sell under stock ticker BRK.B, whereas
Class "A" shares of ORION DHC, Inc will sell under ticker OODHA until the company drops the "A" creating ticker OODH for its "Common" shares only designation. This extra letter does not mean that any exclusive rights exist for the shareholders but it does let investors know that the shares are considered for such, however, these rights or privileges may change based on the decisions made by the underlying company.
Rule 144 stock
"
Rule 144 Stock" is an American term given to shares of stock subject to SEC Rule 144: Selling Restricted and Control Securities. Under Rule 144, restricted and controlled securities are acquired in unregistered form. Investors either purchase or take ownership of these securities through private sales (or other means such as via ESOPs or in exchange for seed money) from the issuing company (as in the case with Restricted Securities) or from an affiliate of the issuer (as in the case with Control Securities). Investors wishing to sell these securities are subject to different rules than those selling traditional common or preferred stock. These individuals will only be allowed to liquidate their securities after meeting the specific conditions set forth by SEC Rule 144. Rule 144 allows public re-sale of restricted securities if a number of different conditions are met.
Stock derivatives
A stock
derivative
In mathematics, the derivative is a fundamental tool that quantifies the sensitivity to change of a function's output with respect to its input. The derivative of a function of a single variable at a chosen input value, when it exists, is t ...
is any financial instrument for which the
underlying
In finance, a derivative is a contract between a buyer and a seller. The derivative can take various forms, depending on the transaction, but every derivative has the following four elements:
# an item (the "underlier") that can or must be bou ...
asset is the price of an equity.
Futures and
options are the main types of derivatives on stocks. The underlying security may be a
stock index
In finance, a stock index, or stock market index, is an index that measures the performance of a stock market, or of a subset of a stock market. It helps investors compare current stock price levels with past prices to calculate market perform ...
or an individual firm's stock, e.g.
single-stock futures
In finance, a single-stock future (SSF) is a type of futures contract between two parties to exchange a specified number of stocks in a company for a price agreed today (the futures price or the strike price) with delivery occurring at a specified ...
.
Stock futures are contracts where the buyer is
long
Long may refer to:
Measurement
* Long, characteristic of something of great duration
* Long, characteristic of something of great length
* Longitude (abbreviation: long.), a geographic coordinate
* Longa (music), note value in early music mens ...
, i.e., takes on the obligation to buy on the contract maturity date, and the seller is
short, i.e., takes on the obligation to sell.
Stock index futures are generally delivered by cash settlement.
A
stock option
In finance, an option is a contract which conveys to its owner, the ''holder'', the right, but not the obligation, to buy or sell a specific quantity of an underlying asset or instrument at a specified strike price on or before a specified ...
is a class of option. Specifically, a
call option
In finance, a call option, often simply labeled a "call", is a contract between the buyer and the seller of the call Option (finance), option to exchange a Security (finance), security at a set price. The buyer of the call option has the righ ...
is the right (''not'' obligation) to buy stock in the future at a fixed price and a
put option
In finance, a put or put option is a derivative instrument in financial markets that gives the holder (i.e. the purchaser of the put option) the right to sell an asset (the ''underlying''), at a specified price (the ''strike''), by (or on) a ...
is the right (''not'' obligation) to sell stock in the future at a fixed price. Thus, the value of a stock option changes in reaction to the underlying stock of which it is a
derivative
In mathematics, the derivative is a fundamental tool that quantifies the sensitivity to change of a function's output with respect to its input. The derivative of a function of a single variable at a chosen input value, when it exists, is t ...
. The most popular method of valuing stock options is the
Black–Scholes model
The Black–Scholes or Black–Scholes–Merton model is a mathematical model for the dynamics of a financial market containing Derivative (finance), derivative investment instruments. From the parabolic partial differential equation in the model, ...
. Apart from
call options granted to employees, most stock options are transferable.
History
During the
Roman Republic
The Roman Republic ( ) was the era of Ancient Rome, classical Roman civilisation beginning with Overthrow of the Roman monarchy, the overthrow of the Roman Kingdom (traditionally dated to 509 BC) and ending in 27 BC with the establis ...
, the state contracted (leased) out many of its services to private companies. These government contractors were called ''publicani'', or ''societas publicanorum'' as individual companies. These companies were similar to modern corporations, or
joint-stock companies more specifically, in a couple of aspects. They issued shares called ''partes'' (for large cooperatives) and ''particulae'' which were small shares that acted like today's over-the-counter shares. Polybius mentions that "almost every citizen" participated in the government leases. There is also evidence that the price of stocks fluctuated. The Roman orator Cicero speaks of ''partes illo tempore carissimae'', which means "shares that had a very high price at that time". This implies a fluctuation of price and stock market behavior in Rome.
Around 1250 in
France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
at
Toulouse
Toulouse (, ; ; ) is a city in southern France, the Prefectures in France, prefecture of the Haute-Garonne department and of the Occitania (administrative region), Occitania region. The city is on the banks of the Garonne, River Garonne, from ...
, 100 shares of the ''Société des Moulins du Bazacle'', or
Bazacle Milling Company
The Society of Moulins du Bazacle, also known as Bazacle Company is a French watermill system founded in Toulouse in the 12th century by the citizens of the city to share the operation of a series of mills installed on the site of the Bazacle. Th ...
were traded at a value that depended on the profitability of the mills the society owned.
In 1288, the Bishop of Västerås acquired a 12.5% interest in Great Copper Mountain (Stora Kopparberget in Swedish) which contained the
Falun Mine. The
Swedish mining and forestry products company
Stora
Stora Enso Oyj (from and ) is a Finnish and Swedish forest industry company. It develops and produces various materials, mostly based on wood, for a range of industries and applications worldwide. It has headquarters in Helsinki, Finland, an ...
has documented a stock transfer, in 1288 in exchange for an estate.

The earliest recognized joint-stock company in modern times was the English (later British)
East India Company
The East India Company (EIC) was an English, and later British, joint-stock company that was founded in 1600 and dissolved in 1874. It was formed to Indian Ocean trade, trade in the Indian Ocean region, initially with the East Indies (South A ...
. It was granted an English
Royal Charter
A royal charter is a formal grant issued by a monarch under royal prerogative as letters patent. Historically, they have been used to promulgate public laws, the most famous example being the English Magna Carta (great charter) of 1215, but ...
by
Elizabeth I
Elizabeth I (7 September 153324 March 1603) was List of English monarchs, Queen of England and List of Irish monarchs, Ireland from 17 November 1558 until her death in 1603. She was the last and longest reigning monarch of the House of Tudo ...
on 31 December 1600, with the intention of favouring trade privileges in
India
India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
. The Royal Charter effectively gave the newly created ''Honourable East India Company'' (HEIC) a 15-year
monopoly
A monopoly (from Greek language, Greek and ) is a market in which one person or company is the only supplier of a particular good or service. A monopoly is characterized by a lack of economic Competition (economics), competition to produce ...
on all trade in the
East Indies
The East Indies (or simply the Indies) is a term used in historical narratives of the Age of Discovery. The ''Indies'' broadly referred to various lands in Eastern world, the East or the Eastern Hemisphere, particularly the islands and mainl ...
.
Soon afterwards, in 1602, the
Dutch East India Company
The United East India Company ( ; VOC ), commonly known as the Dutch East India Company, was a chartered company, chartered trading company and one of the first joint-stock companies in the world. Established on 20 March 1602 by the States Ge ...
issued the first shares that were made tradeable on the
Amsterdam Stock Exchange
Euronext Amsterdam is a stock exchange based in Amsterdam, the Netherlands. Formerly known as the Amsterdam Stock Exchange (), it merged on 22 September 2000 with the Brussels Stock Exchange and the Paris Stock Exchange to form Euronext. The ...
. Between 1602 and 1796 it traded 2.5 million tons of cargo with Asia on 4,785 ships and sent a million Europeans to work in Asia.
Shareholder
A shareholder (or ''stockholder'') is an
individual
An individual is one that exists as a distinct entity. Individuality (or self-hood) is the state or quality of living as an individual; particularly (in the case of humans) as a person unique from other people and possessing one's own needs or g ...
or
company
A company, abbreviated as co., is a Legal personality, legal entity representing an association of legal people, whether Natural person, natural, Juridical person, juridical or a mixture of both, with a specific objective. Company members ...
(including a
corporation
A corporation or body corporate is an individual or a group of people, such as an association or company, that has been authorized by the State (polity), state to act as a single entity (a legal entity recognized by private and public law as ...
) that legally owns one or more
shares
In financial markets, a share (sometimes referred to as stock or equity) is a unit of equity ownership in the capital stock of a corporation. It can refer to units of mutual funds, limited partnerships, and real estate investment trusts. Sha ...
of stock in a
joint stock company
A joint-stock company (JSC) is a business entity in which shares of the company's capital stock, stock can be bought and sold by shareholders. Each shareholder owns company stock in proportion, evidenced by their share (finance), shares (certifi ...
. Both private and public traded companies have shareholders.
Shareholders are granted special privileges depending on the class of stock, including the right to vote on matters such as elections to the
board of directors
A board of directors is a governing body that supervises the activities of a business, a nonprofit organization, or a government agency.
The powers, duties, and responsibilities of a board of directors are determined by government regulatio ...
, the right to share in distributions of the company's income, the right to purchase new shares issued by the company, and the right to a company's assets during a
liquidation
Liquidation is the process in accounting by which a Company (law), company is brought to an end. The assets and property of the business are redistributed. When a firm has been liquidated, it is sometimes referred to as :wikt:wind up#Noun, w ...
of the company. However, shareholder's rights to a company's assets are subordinate to the rights of the company's creditors.
Shareholders are one type of
stakeholders, who may include anyone who has a direct or indirect equity interest in the
business entity
In law, a legal person is any person or legal entity that can do the things a human person is usually able to do in law – such as enter into contracts, lawsuit, sue and be sued, ownership, own property, and so on. The reason for the term "''le ...
or someone with a non-equity interest in a
non-profit organization
A nonprofit organization (NPO), also known as a nonbusiness entity, nonprofit institution, not-for-profit organization, or simply a nonprofit, is a non-governmental (private) legal entity organized and operated for a collective, public, or so ...
. Thus it might be common to call
volunteer contributors to an
association stakeholders, even though they are not shareholders.
Although directors and officers of a company are bound by
fiduciary
A fiduciary is a person who holds a legal or ethical relationship of trust with one or more other parties (legal person or group of persons). Typically, a fiduciary prudently takes care of money or other assets for another person. One party, ...
duties to act in the best interest of the shareholders, the shareholders themselves normally do not have such duties towards each other.
However, in a few unusual cases, some courts have been willing to imply such a duty between shareholders. For example, in
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
,
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
, majority shareholders of
closely held corporations have a duty not to destroy the value of the shares held by minority shareholders.
The largest shareholders (in terms of percentages of companies owned) are often mutual funds, and, especially, passively managed
exchange-traded fund
An exchange-traded fund (ETF) is a type of investment fund that is also an exchange-traded product, i.e., it is traded on stock exchanges. ETFs own financial assets such as stocks, bonds, currencies, debts, futures contracts, and/or comm ...
s.
Application
The owners of a private company may want additional capital to invest in new projects within the company. They may also simply wish to reduce their holding, freeing up capital for their own private use. They can achieve these goals by selling shares in the company to the general public, through a sale on a
stock exchange
A stock exchange, securities exchange, or bourse is an exchange where stockbrokers and traders can buy and sell securities, such as shares of stock, bonds and other financial instruments. Stock exchanges may also provide facilities for ...
. This process is called an
initial public offering
An initial public offering (IPO) or stock launch is a public offering in which shares of a company are sold to institutional investors and usually also to retail (individual) investors. An IPO is typically underwritten by one or more investm ...
, or IPO.
By selling shares they can sell part or all of the company to many part-owners. The purchase of one share entitles the owner of that share to literally share in the ownership of the company, a fraction of the decision-making power, and potentially a fraction of the profits, which the company may issue as
dividend
A dividend is a distribution of profits by a corporation to its shareholders, after which the stock exchange decreases the price of the stock by the dividend to remove volatility. The market has no control over the stock price on open on the ex ...
s. The owner may also inherit
debt
Debt is an obligation that requires one party, the debtor, to pay money Loan, borrowed or otherwise withheld from another party, the creditor. Debt may be owed by a sovereign state or country, local government, company, or an individual. Co ...
and even
litigation
A lawsuit is a proceeding by one or more parties (the plaintiff or claimant) against one or more parties (the defendant) in a civil court of law. The archaic term "suit in law" is found in only a small number of laws still in effect today. ...
.
In the common case of a publicly traded corporation, where there may be thousands of shareholders, it is impractical to have all of them making the daily decisions required to run a company. Thus, the shareholders will use their shares as votes in the election of members of the
board of directors
A board of directors is a governing body that supervises the activities of a business, a nonprofit organization, or a government agency.
The powers, duties, and responsibilities of a board of directors are determined by government regulatio ...
of the company.
In a typical case, each share constitutes one vote. Corporations may, however, issue different classes of shares, which may have different voting rights. Owning the majority of the shares allows other shareholders to be out-voted – effective control rests with the majority shareholder (or shareholders acting in concert). In this way the original owners of the company often still have control of the company.
Shareholder rights
Although ownership of 50% of shares does result in 50% ownership of a company, it does not give the shareholder the right to use a company's building, equipment, materials, or other property. This is because the company is considered a legal person, thus it owns all its assets itself. This is important in areas such as insurance, which must be in the name of the company and not the main shareholder.
In most countries,
boards of directors
A board of directors is a governing body that supervises the activities of a business, a nonprofit organization, or a government agency.
The powers, duties, and responsibilities of a board of directors are determined by government regulations ...
and company
managers
Management (or managing) is the administration of organizations, whether businesses, nonprofit organizations, or a government bodies through business administration, nonprofit management, or the political science sub-field of public administr ...
have a
fiduciary
A fiduciary is a person who holds a legal or ethical relationship of trust with one or more other parties (legal person or group of persons). Typically, a fiduciary prudently takes care of money or other assets for another person. One party, ...
responsibility to run the company in the interests of its stockholders. Nonetheless, as
Martin Whitman writes:
:...it can safely be stated that there does not exist any publicly traded company where management works exclusively in the best interests of OPMI
utside Passive Minority Investorstockholders. Instead, there are both "communities of interest" and "conflicts of interest" between stockholders (principal) and management (agent). This conflict is referred to as the
principal–agent problem
The principal–agent problem refers to the conflict in interests and priorities that arises when one person or entity (the " agent") takes actions on behalf of another person or entity (the " principal"). The problem worsens when there is a gr ...
. It would be naive to think that any management would forego management compensation, and
management entrenchment, just because some of these management privileges might be perceived as giving rise to a conflict of interest with OPMIs.
Even though the board of directors runs the company, the shareholder has some impact on the company's policy, as the shareholders elect the board of directors. Each shareholder typically has a percentage of votes equal to the percentage of shares he or she owns. So as long as the shareholders agree that the management (agent) are performing poorly they can select a new board of directors which can then hire a new management team. In practice, however, genuinely contested board elections are rare. Board candidates are usually nominated by insiders or by the board of the directors themselves, and a considerable amount of stock is held or voted by insiders.
Owning shares does not mean responsibility for liabilities. If a company goes broke and has to default on loans, the shareholders are not liable in any way. However, all money obtained by converting assets into cash will be used to repay loans and other debts first, so that shareholders cannot receive any money unless and until creditors have been paid (often the shareholders end up with nothing).
Means of financing
Financing a company through the sale of stock in a company is known as
equity financing. Alternatively,
debt
Debt is an obligation that requires one party, the debtor, to pay money Loan, borrowed or otherwise withheld from another party, the creditor. Debt may be owed by a sovereign state or country, local government, company, or an individual. Co ...
financing (for example issuing
bonds) can be done to avoid giving up shares of ownership of the company. Unofficial financing known as
trade financing usually provides the major part of a company's
working capital
Working capital (WC) is a financial metric which represents operating liquidity available to a business, organisation, or other entity, including governmental entities. Along with fixed assets such as plant and equipment, working capital is consi ...
(day-to-day operational needs).
Trading

In general, the shares of a company may be transferred from shareholders to other parties by sale or other mechanisms, unless prohibited. Most jurisdictions have established laws and regulations governing such transfers, particularly if the issuer is a publicly traded entity.
The desire of stockholders to trade their shares has led to the establishment of
stock exchange
A stock exchange, securities exchange, or bourse is an exchange where stockbrokers and traders can buy and sell securities, such as shares of stock, bonds and other financial instruments. Stock exchanges may also provide facilities for ...
s, organizations which provide marketplaces for trading
shares
In financial markets, a share (sometimes referred to as stock or equity) is a unit of equity ownership in the capital stock of a corporation. It can refer to units of mutual funds, limited partnerships, and real estate investment trusts. Sha ...
and other derivatives and financial products. Today,
stock trader
A stock trader or equity trader or share trader, also called a stock investor, is a person or company involved in trading equity securities and attempting to profit from the purchase and sale of those securities. Stock traders may be an inve ...
s are usually represented by a
stockbroker
A stockbroker is an individual or company that buys and sells stocks and other investments for a financial market participant in return for a commission, markup, or fee. In most countries they are regulated as a broker or broker-dealer and ...
who buys and sells shares of a wide range of companies on such exchanges. A company may list its shares on an exchange by meeting and maintaining the
listing requirements of a particular stock exchange.
Many large non-U.S companies choose to list on a U.S. exchange as well as an exchange in their home country in order to broaden their investor base. These companies must maintain a block of shares at a bank in the US, typically a certain percentage of their capital. On this basis, the holding bank establishes American depositary shares and issues an
American depositary receipt (ADR) for each share a trader acquires. Likewise, many large U.S. companies list their shares at foreign exchanges to raise capital abroad.
Small companies that do not qualify and cannot meet the listing requirements of the major exchanges may be traded
over-the-counter
Over-the-counter (OTC) drugs are medicines sold directly to a consumer without a requirement for a prescription from a healthcare professional, as opposed to prescription drugs, which may be supplied only to consumers possessing a valid pres ...
(OTC) by an off-exchange mechanism in which trading occurs directly between parties. The major OTC markets in the United States are the electronic quotation systems
OTC Bulletin Board
The OTC (Over-The-Counter) Bulletin Board or OTCBB was a United States Financial quote, quotation medium operated by the Financial Industry Regulatory Authority (FINRA) for its subscribing members. FINRA closed the OTCBB on November 8, 2021.
The ...
(OTCBB) and
OTC Markets Group (formerly known as Pink OTC Markets Inc.) where individual retail investors are also represented by a
brokerage firm
A broker is a person or entity that arranges transactions between a Purchasing, buyer and a sales, seller. This may be done for a commission (remuneration), commission when the deal is executed. A broker who also acts as a seller or as a buyer b ...
and the quotation service's requirements for a company to be listed are minimal. Shares of companies in bankruptcy proceedings are usually listed by these quotation services after the stock is delisted from an exchange.
Buying
There are various methods of buying and
financing
Funding is the act of providing resources to finance a need, program, or project. While this is usually in the form of money, it can also take the form of effort or time from an organization or company. Generally, this word is used when a firm use ...
stocks, the most common being through a
stockbroker
A stockbroker is an individual or company that buys and sells stocks and other investments for a financial market participant in return for a commission, markup, or fee. In most countries they are regulated as a broker or broker-dealer and ...
. Brokerage firms, whether they are a full-service or
discount broker, arrange the transfer of stock from a seller to a buyer. Most trades are actually done through brokers listed with a stock exchange.
There are many different brokerage firms from which to choose, such as full service brokers or discount brokers. The full service brokers usually charge more per trade, but give investment advice or more personal service; the discount brokers offer little or no investment advice but charge less for trades. Another type of broker would be a
bank
A bank is a financial institution that accepts Deposit account, deposits from the public and creates a demand deposit while simultaneously making loans. Lending activities can be directly performed by the bank or indirectly through capital m ...
or
credit union
A credit union is a member-owned nonprofit organization, nonprofit cooperative financial institution. They may offer financial services equivalent to those of commercial banks, such as share accounts (savings accounts), share draft accounts (che ...
that may have a deal set up with either a full-service or discount broker.
There are other ways of buying stock besides through a broker. One way is directly from the company itself. If at least one share is owned, most companies will allow the purchase of shares directly from the company through their
investor relations
Investor relations (IR) is a "strategic management responsibility that is capable of integrating finance, communication, marketing and securities law Regulatory compliance, compliance to enable the most effective two-way communication between a com ...
departments. However, the initial share of stock in the company will have to be obtained through a regular stock broker. Another way to buy stock in companies is through Direct Public Offerings which are usually sold by the company itself. A direct public offering is an
initial public offering
An initial public offering (IPO) or stock launch is a public offering in which shares of a company are sold to institutional investors and usually also to retail (individual) investors. An IPO is typically underwritten by one or more investm ...
in which the stock is purchased directly from the company, usually without the aid of brokers.
When it comes to
financing
Funding is the act of providing resources to finance a need, program, or project. While this is usually in the form of money, it can also take the form of effort or time from an organization or company. Generally, this word is used when a firm use ...
a purchase of stocks there are two ways: purchasing stock with money that is currently in the buyer's ownership, or by buying stock on
margin
Margin may refer to:
Physical or graphical edges
*Margin (typography), the white space that surrounds the content of a page
* Continental margin, the zone of the ocean floor that separates the thin oceanic crust from thick continental crust
*Leaf ...
. Buying stock on
margin
Margin may refer to:
Physical or graphical edges
*Margin (typography), the white space that surrounds the content of a page
* Continental margin, the zone of the ocean floor that separates the thin oceanic crust from thick continental crust
*Leaf ...
means buying stock with money borrowed against the value of stocks in the same account. These stocks, or
collateral, guarantee that the buyer can repay the
loan
In finance, a loan is the tender of money by one party to another with an agreement to pay it back. The recipient, or borrower, incurs a debt and is usually required to pay interest for the use of the money.
The document evidencing the deb ...
; otherwise, the stockbroker has the right to sell the stock (collateral) to repay the borrowed money. He can sell if the
share price
A share price is the price of a single share of a number of saleable equity shares of a company.
In layman's terms, the stock price is the highest amount someone is willing to pay for the stock, or the lowest amount that it can be bought for.
B ...
drops below the
margin requirement, at least 50% of the value of the stocks in the account. Buying on margin works the same way as borrowing money to buy a car or a house, using a car or house as collateral. Moreover, borrowing is not free; the broker usually charges 8–10% interest.
Selling
Selling stock is procedurally similar to buying stock. Generally, the investor wants to buy low and sell high, if not in that order (
short selling
In finance, being short in an asset means investing in such a way that the investor will profit if the market value of the asset falls. This is the opposite of the more common Long (finance), long Position (finance), position, where the inves ...
); although a number of reasons may induce an investor to sell at a loss, e.g., to avoid further loss.
As with buying a stock, there is a transaction fee for the broker's efforts in arranging the transfer of stock from a seller to a buyer. This fee can be high or low depending on which type of brokerage, full service or discount, handles the transaction.
After the transaction has been made, the seller is then entitled to all of the money. An important part of selling is keeping track of the earnings. Importantly, on selling the stock, in jurisdictions that have them,
capital gains tax
A capital gains tax (CGT) is the tax on profits realized on the sale of a non-inventory asset. The most common capital gains are realized from the sale of stocks, bonds, precious metals, real estate, and property.
In South Africa, capital g ...
es will have to be paid on the additional proceeds, if any, that are in excess of the cost basis.
Short selling
Short selling
In finance, being short in an asset means investing in such a way that the investor will profit if the market value of the asset falls. This is the opposite of the more common Long (finance), long Position (finance), position, where the inves ...
consists of an investor immediately selling borrowed shares and then buying them back when their price has gone down (called "covering").
Essentially, such an investor bets
that the price of the shares will drop so that they can be bought back at the lower price and thus returned to the lender at a profit.
The risks of short selling are usually higher than those of buying stock, as the loss can theoretically be unlimited since the stock's value can go up indefinitely in theory.
Stock price fluctuations
The price of a stock fluctuates fundamentally due to the theory of
supply and demand
In microeconomics, supply and demand is an economic model of price determination in a Market (economics), market. It postulates that, Ceteris_paribus#Applications, holding all else equal, the unit price for a particular Good (economics), good ...
. Like all commodities in the market, the price of a stock is sensitive to demand. However, there are many factors that influence the demand for a particular stock. The fields of
fundamental analysis
Fundamental analysis, in accounting and finance, is the analysis of a business's financial statements (usually to analyze the business's assets, Liability (financial accounting), liabilities, and earnings); health; Competition, competitors and Ma ...
and
technical analysis
In finance, technical analysis is an analysis methodology for analysing and forecasting the direction of prices through the study of past market data, primarily price and volume. As a type of active management, it stands in contradiction to ...
attempt to understand market conditions that lead to price changes, or even predict future price levels. A recent study shows that customer satisfaction, as measured by the
American Customer Satisfaction Index
The American Customer Satisfaction Index (ACSI) is an economic indicator that measures the satisfaction of consumers across the United States, U.S. Economic system, economy. It is produced by the American Customer Satisfaction Index (ACSI LLC) base ...
(ACSI), is significantly correlated to the market value of a stock. Stock price may be influenced by analysts' business forecast for the company and outlooks for the company's general market segment. Stocks can also fluctuate greatly due to
pump and dump
Pump and dump (P&D) is a form of securities fraud that involves artificially inflating the price of an owned stock through false and misleading positive statements (pump), in order to sell the cheaply purchased stock at a higher price (dump). O ...
scams .
Share price determination
At any given moment, an equity's price is strictly a result of supply and demand. The supply, commonly referred to as the ''
float'', is the number of shares offered for sale at any one moment. The demand is the number of shares investors wish to buy at exactly that same time. The price of the stock moves in order to achieve and maintain
equilibrium. The product of this instantaneous price and the float at any one time is the
market capitalization
Market capitalization, sometimes referred to as market cap, is the total value of a publicly traded company's outstanding common shares owned by stockholders.
Market capitalization is equal to the market price per common share multiplied by ...
of the entity offering the equity at that point in time.
When prospective buyers outnumber sellers, the price rises. Eventually, sellers attracted to the high selling price enter the market and/or buyers leave, achieving equilibrium between buyers and sellers. When sellers outnumber buyers, the price falls. Eventually buyers enter and/or sellers leave, again achieving equilibrium.
Thus, the value of a share of a company at any given moment is determined by all investors voting with their money. If more investors want a stock and are willing to pay more, the price will go up. If more investors are selling a stock and there are not enough buyers, the price will go down.
That does not explain how people decide the maximum price at which they are willing to buy or the minimum at which they are willing to sell. In professional investment circles the
efficient market hypothesis
The efficient-market hypothesis (EMH) is a hypothesis in financial economics that states that asset prices reflect all available information. A direct implication is that it is impossible to "beat the market" consistently on a risk-adjusted basis ...
(EMH) continues to be popular, although this theory is controversial in academic and professional circles. Briefly, EMH says that investing is overall (weighted by the
standard deviation
In statistics, the standard deviation is a measure of the amount of variation of the values of a variable about its Expected value, mean. A low standard Deviation (statistics), deviation indicates that the values tend to be close to the mean ( ...
) rational; that the price of a stock at any given moment represents a rational evaluation of the known information that might bear on the future value of the company; and that share prices of equities are priced ''efficiently'', which is to say that they represent accurately the
expected value
In probability theory, the expected value (also called expectation, expectancy, expectation operator, mathematical expectation, mean, expectation value, or first Moment (mathematics), moment) is a generalization of the weighted average. Informa ...
of the stock, as best it can be known at a given moment. In other words, prices are the result of discounting expected future cash flows.
The EMH model, if true, has at least two interesting consequences. First, because financial
risk
In simple terms, risk is the possibility of something bad happening. Risk involves uncertainty about the effects/implications of an activity with respect to something that humans value (such as health, well-being, wealth, property or the environ ...
is presumed to require at least a small premium on expected value, the
return on equity
The return on equity (ROE) is a measure of the profitability of a business in relation to its equity;
where:
: Jason Fernando (2023)"Return on Equity (ROE) Calculation and What It Means" Investopedia
Thus, ROE is equal to a fiscal year's net in ...
can be expected to be slightly greater than that available from non-equity investments: if not, the same rational calculations would lead equity investors to shift to these safer non-equity investments that could be expected to give the same or better return at lower risk. Second, because the price of a share at every given moment is an "efficient" reflection of expected value, then—relative to the curve of expected return—prices will tend to follow a
random walk
In mathematics, a random walk, sometimes known as a drunkard's walk, is a stochastic process that describes a path that consists of a succession of random steps on some Space (mathematics), mathematical space.
An elementary example of a rand ...
, determined by the emergence of information (randomly) over time. Professional equity investors therefore immerse themselves in the flow of fundamental information, seeking to gain an advantage over their competitors (mainly other professional investors) by more intelligently interpreting the emerging flow of information (news).
The EMH model does not seem to give a complete description of the process of equity price determination. For example, stock markets are more volatile than EMH would imply. In recent years it has come to be accepted that the share markets are not perfectly efficient, perhaps especially in emerging markets or other markets that are not dominated by well-informed professional investors.
Another theory of share price determination comes from the field of
behavioral finance
Behavioral economics is the study of the psychological (e.g. cognitive, behavioral, affective, social) factors involved in the decisions of individuals or institutions, and how these decisions deviate from those implied by traditional economi ...
. According to behavioral finance, humans often make irrational decisions—particularly, related to the buying and selling of securities—based upon fears and misperceptions of outcomes. The irrational trading of securities can often create securities prices which vary from rational, fundamental price valuations. For instance, during the technology bubble of the late 1990s (which was followed by the
dot-com bust of 2000–2002), technology companies were often bid beyond any rational fundamental value because of what is commonly known as the "
greater fool theory". The "greater fool theory" holds that, because the predominant method of realizing returns in equity is from the sale to another investor, one should select securities that they believe that someone else will value at a higher level at some point in the future, without regard to the basis for that other party's willingness to pay a higher price.Thus, even a rational investor may bank on others' irrationality.
Arbitrage trading
When companies raise capital by offering stock on more than one exchange, the potential exists for discrepancies in the valuation of shares on different exchanges. A keen investor with access to information about such discrepancies may invest in expectation of their eventual convergence, known as
arbitrage
Arbitrage (, ) is the practice of taking advantage of a difference in prices in two or more marketsstriking a combination of matching deals to capitalize on the difference, the profit being the difference between the market prices at which th ...
trading.
Electronic trading
Electronic trading, sometimes called e-trading, is the buying and selling of stocks, bonds, foreign currencies, financial derivatives, cryptocurrencies, and other financial instruments online. This is typically done using electronic trading plat ...
has resulted in extensive price transparency (
efficient-market hypothesis
The efficient-market hypothesis (EMH) is a hypothesis in financial economics that states that asset prices reflect all available information. A direct implication is that it is impossible to "beat the market" consistently on a risk-adjusted basis ...
) and these discrepancies, if they exist, are short-lived and quickly equilibrated.
See also
*
Arrangements between railroads
Railway company, Railway companies can interact with and control others in many ways. These relationships can be complicated by bankruptcies.
Operating
Often, when a railroad first opens, it is only a short spur of a Main line (railway), main li ...
*
Boiler room
*
Bucket shop
*
Buying in (securities)
*
Concentrated stock
In finance, diversification is the process of allocating capital in a way that reduces the exposure to any one particular asset or risk. A common path towards diversification is to reduce financial risk, risk or volatility (finance), volatility ...
*
Employee stock ownership
Employee stock ownership, or employee share ownership, is where a company's employees own shares in that company (or in the parent company of a group of companies). US employees typically acquire shares through a share option plan. In the UK, Em ...
*
Equity investment
A stock trader or equity trader or share trader, also called a stock investor, is a person or company involved in trading equity securities and attempting to profit from the purchase and sale of those securities. Stock traders may be an inve ...
*
GICS
*
Golden share
*
House stock
*
Insider trading
Insider trading is the trading of a public company's stock or other securities (such as bonds or stock options) based on material, nonpublic information about the company. In various countries, some kinds of trading based on insider informati ...
*
Money managers
Money is any item or verifiable record that is generally accepted as payment for goods and services and repayment of debts, such as taxes, in a particular country or socio-economic context. The primary functions which distinguish money are: me ...
*
Naked short selling
*
Penny stock
Penny stocks are common shares of small public companies that trade for less than five dollars per share. The U.S. Securities and Exchange Commission (SEC) uses the term "penny stock" to refer to a security, a financial instrument which repr ...
*
Scripophily
*
Social ownership
Social ownership is a type of property where an asset is recognized to be in the possession of society as a whole rather than individual members or groups within it. Social ownership of the means of production is the defining characteristic of ...
*
Stock and flow
Economics, business, accounting, and related fields often distinguish between quantities that are stocks and those that are flows. These differ in their units of measurement. A ''stock'' is measured at one specific time, and represents a quantity ...
*
Stock dilution
Stock dilution, also known as equity dilution, is the decrease in existing shareholders' ownership percentage of a company as a result of the company issuing new equity. New equity increases the total shares outstanding which has a dilutive ef ...
*
Stock valuation
Stock valuation is the method of calculating theoretical values of companies and their stocks. The main use of these methods is to predict future market prices, or more generally, potential market prices, and thus to profit from price movement � ...
*
Stock token
The blockchain is a distributed ledger with growing lists of Record (computer science), records (''blocks'') that are securely linked together via Cryptographic hash function, cryptographic hashes. Each block contains a cryptographic hash of th ...
*
Stub (stock)
*
Tracking stock
*
Treasury stock
A treasury stock or reacquired stock is stock which is bought back by the issuing company, reducing the amount of outstanding stock on the open market ("open market" including insiders' holdings).
Stock repurchases are used as a tax efficien ...
* Traditional and alternative
investment
Investment is traditionally defined as the "commitment of resources into something expected to gain value over time". If an investment involves money, then it can be defined as a "commitment of money to receive more money later". From a broade ...
s
*
Voting interest
Voting interest (or voting power) in business and accounting means the total number, or percent, of votes entitled to be cast on the issue at the time the determination of voting power is made, excluding a vote which is contingent upon the happenin ...
Notes
References
Further reading
*
*
* ''
Rich Dad Poor Dad: What the Rich Teach Their Kids about Money That the Poor and Middle Class Do Not!'', by
Robert Kiyosaki
Robert Toru Kiyosaki (born April 8, 1947) is an American businessman and author, known for the '' Rich Dad Poor Dad'' series of personal finance books. He founded the Rich Dad Company, which provides personal finance and business education throu ...
and
Sharon Lechter.
Warner Business Books, 2000.
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External links
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Corporate finance
Financial capital
Private equity