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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 by investment, investing in a variety of assets. If asset prices do not change in perfect synchrony, a diversified Portfolio (finance), portfolio will have less variance than the weighted mean, weighted average variance of its constituent assets, and often less volatility than the least volatile of its constituents. Diversification is one of two general techniques for reducing investment risk. The other is hedge (finance), hedging. Examples The simplest example of diversification is provided by the proverb "Don't put all your eggs in one basket". Dropping the basket will break all the eggs. Placing each egg in a different basket is more diversified. There is more risk of losing one egg, but less risk of losing all of them. On the other h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asset Allocation
Asset allocation is the implementation of an investment strategy that attempts to balance risk versus reward by adjusting the percentage of each asset in an investment portfolio according to the investor's risk tolerance, goals and investment time frame. The focus is on the characteristics of the overall portfolio. Such a strategy contrasts with an approach that focuses on individual assets. Description Many financial experts argue that asset allocation is an important factor in determining returns for an investment portfolio. Asset allocation is based on the principle that different assets perform differently in different market and economic conditions. A fundamental justification for asset allocation is the notion that different asset classes offer returns that are not perfectly correlated, hence diversification reduces the overall risk in terms of the variability of returns for a given level of expected return. Asset diversification has been described as "the only f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variance
In probability theory and statistics, variance is the expected value of the squared deviation from the mean of a random variable. The standard deviation (SD) is obtained as the square root of the variance. Variance is a measure of dispersion, meaning it is a measure of how far a set of numbers is spread out from their average value. It is the second central moment of a distribution, and the covariance of the random variable with itself, and it is often represented by \sigma^2, s^2, \operatorname(X), V(X), or \mathbb(X). An advantage of variance as a measure of dispersion is that it is more amenable to algebraic manipulation than other measures of dispersion such as the expected absolute deviation; for example, the variance of a sum of uncorrelated random variables is equal to the sum of their variances. A disadvantage of the variance for practical applications is that, unlike the standard deviation, its units differ from the random variable, which is why the standard devi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zvi Bodie
Zvi Bodie (born April 27, 1943) is an American economist, author and professor. He was the Norman and Adele Barron Professor of Management at Boston University, teaching finance at Questrom for 43 years before retiring in 2015. His textbook, ''Investments'', (with Kane and Marcus) is the market leader and is used in the certification programs of the CFA Institute and the Society of Actuaries. Bodie's work has centered on pension finance and investment strategy. He continues to do consulting work and media interviews. Education and background Bodie holds a Ph.D. in economics (1975) from the Massachusetts Institute of Technology, a M.A. in economics (1970) from the Hebrew University, and a B.A. with Honors in philosophy (1965) from Brooklyn College. He has served on the finance faculty at the Harvard Business School and MIT Sloan School of Management. Bodie was on the editorial board of the ''Journal of Pension Economics and Finance'', and served as an advisory member to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Samuelson
Paul Anthony Samuelson (May 15, 1915 – December 13, 2009) was an American economist who was the first American to win the Nobel Memorial Prize in Economic Sciences. When awarding the prize in 1970, the Swedish Royal Academies stated that he "has done more than any other contemporary economist to raise the level of scientific analysis in economic theory". "In a career that spanned seven decades, he transformed his field, influenced millions of students and turned MIT into an economics powerhouse" Samuelson was one of the most influential economists of the latter half of the 20th century."Paul Samuelson: The last of the great general economists died on December 13th, aged 94" ''The Economist'', December 17, 2009 In 1996, he was awarded the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Business
''The Journal of Business'' was an academic journal published by the University of Chicago Press. It aimed to cover "a comprehensive range of areas, including business finance and investment, money and banking, marketing, security markets, business economics, accounting practices, social issues and public policy, management organization, statistics and econometrics, administration and management, international trade and finance, and personnel, industrial relations, and labor." Originally titled ''The Journal of Business of the University of Chicago'' when it debuted in 1928, the journal shortened its name to ''The Journal of Business'' in 1954. Its broad scope became a liability as specialization in business scholarship grew and numerous specialized journals appeared. Rather than keeping it as a generalist journal or narrowing its focus, the faculty of the University of Chicago's Booth School of Business decided to cease publication of the journal at the end of 2006. Some of its i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin J
Martin may refer to: Places Antarctica * Martin Peninsula, Marie Byrd Land * Port Martin, Adelie Land * Point Martin, South Orkney Islands Europe * Martin, Croatia, a village * Martin, Slovakia, a city * Martín del Río, Aragón, Spain * Martín River, a tributary of the Ebro river in Spain * Martin (Val Poschiavo), Switzerland England * Martin, Hampshire * Martin, Kent * Martin, East Lindsey, Lincolnshire, a hamlet and former parish * Martin, North Kesteven, Lincolnshire, a village and parish * Martin Hussingtree, Worcestershire * Martin Mere, a lake in Lancashire ** WWT Martin Mere, a wetland nature reserve that includes the lake and surrounding areas North America Canada * Rural Municipality of Martin No. 122, Saskatchewan, Canada * Martin Islands, Nunavut, Canada United States * Martin, Florida * Martin, Georgia * Martin, Indiana * Martin, Kentucky * Martin, Louisiana * Martin, Michigan * Martin, Nebraska * Martin, North Dakota * Martin, Ohio * Martin, Sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ed Elton
Edwin J. Elton IV (born 5 October 1939) was Nomura Professor of Finance at New York University Stern School of Business and Academic Director of the Stern Doctoral Program. Biography Professor Elton has served as a portfolio theory and investment management consultant for major financial institutions in Asia, Europe, and the United States. He has been a senior research fellow at the International Institute of Management in Berlin and a visiting scholar at the European Institute for Advanced Studies in Management (EIASM) in Brussels and at Katholieke Universiteit Leuven. Professor Elton received the Graham Dodd Award for research in investments and was named Distinguished Scholar by the Eastern Finance Association. He is a former president of the American Finance Association. Professor Elton is currently associate editor of ''Journal of Banking and Finance'' and ''Journal of Accounting, Auditing, and Finance'', and was also formerly co-managing editor of ''The Journal of Fin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Index (economics)
In economics, statistics, and finance, an index is a number that measures how a group of related data points—like prices, company performance, productivity, or employment—changes over time to track different aspects of economic health from various sources. Consumer-focused indices include the Consumer Price Index (CPI), which shows how retail prices for goods and services shift in a fixed area, aiding adjustments to salaries, Bond (finance), bond interest rates, and tax thresholds for inflation. The cost-of-living index (COLI) compares living expenses over time or across places.Turvey, Ralph. (2004) Consumer Price Index Manual: Theory And Practice.' Page 11. Publisher: International Labour Organization. . ''The Economist''’s Big Mac Index uses a Big Mac’s cost to explore currency values and purchasing power. Market performance indices track trends like company value or employment. Stock market index, Stock market indices include the Dow Jones Industrial Average and S&P 500, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S&P 500
The Standard and Poor's 500, or simply the S&P 500, is a stock market index tracking the stock performance of 500 leading companies listed on stock exchanges in the United States. It is one of the most commonly followed equity indices and includes approximately 80% of the total market capitalization of U.S. public companies, with an aggregate market cap of more than $49.8 trillion as of March 31, 2025. The S&P 500 index is a Free-float weighted/ capitalization-weighted index. As of April 2025, the ten largest companies on the list of S&P 500 companies accounted for approximately 35% of the market capitalization of the index and were, in order of highest to lowest weighting: Apple (6.4%), Microsoft (6.2%), Nvidia (6.0%), Amazon.com (3.8%), Alphabet (3.6%, including both class A & C shares), Meta Platforms (2.7%), Berkshire Hathaway (2.0%), Broadcom (1.8%), Tesla (1.6%), and JPMorgan Chase (1.4%). The components that have increased their dividends in 25 consecutive ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Market Risk
Market risk is the risk of losses in positions arising from movements in market variables like prices and volatility. There is no unique classification as each classification may refer to different aspects of market risk. Nevertheless, the most commonly used types of market risk are: * '' Equity risk'', the risk that stock or stock indices (e.g. Euro Stoxx 50, etc.) prices or their implied volatility will change. * ''Interest rate risk'', the risk that interest rates (e.g. Libor, Euribor, etc.) or their implied volatility will change. * '' Currency risk'', the risk that foreign exchange rates (e.g. EUR/USD, EUR/GBP, etc.) or their implied volatility will change. * '' Commodity risk'', the risk that commodity prices (e.g. corn, crude oil) or their implied volatility will change. * '' Margining risk'' results from uncertain future cash outflows due to margin calls covering adverse value changes of a given position. * '' Shape risk'' * '' Holding period risk'' * '' Basi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beta (finance)
In finance, the beta ( or market beta or beta coefficient) is a statistic that measures the expected increase or decrease of an individual stock price in proportion to movements of the stock market as a whole. Beta can be used to indicate the contribution of an individual asset to the market risk of a portfolio when it is added in small quantity. It refers to an asset's non-diversifiable risk, systematic risk, or market risk. Beta is not a measure of idiosyncratic risk. Beta is the hedge ratio of an investment with respect to the stock market. For example, to hedge out the market-risk of a stock with a market beta of 2.0, an investor would short $2,000 in the stock market for every $1,000 invested in the stock. Thus insured, movements of the overall stock market no longer influence the combined position on average. Beta measures the contribution of an individual investment to the risk of the market portfolio that was not reduced by diversification. It does not measure the r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
