The IBEX 35 (IBerian IndEX) is the benchmark
stock market index
In finance, a stock index, or stock market index, is an Index (economics), 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 calcul ...
of the
Bolsa de Madrid, Spain's principal
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 ...
. Initiated in 1992, the index is administered and calculated by Sociedad de Bolsas, a subsidiary of
Bolsas y Mercados Españoles (BME), the company which runs Spain's securities markets (including the Bolsa de Madrid). It is a market capitalization weighted index comprising the 35 most
liquid
Liquid is a state of matter with a definite volume but no fixed shape. Liquids adapt to the shape of their container and are nearly incompressible, maintaining their volume even under pressure. The density of a liquid is usually close to th ...
Spanish stocks traded in the
Madrid Stock Exchange General Index and is reviewed twice annually. Trading on
options and
futures contract
In finance, a futures contract (sometimes called futures) is a standardized legal contract to buy or sell something at a predetermined price for delivery at a specified time in the future, between parties not yet known to each other. The item tr ...
s on the IBEX 35 is provided by MEFF (Mercado Español de Futuros Financieros), another subsidiary of BME.
History

The IBEX 35 was inaugurated on January 14, 1992, although there are calculated values for the index back to December 29, 1989, where the base value of 3,000 points lies.
Between 2000 and 2007, the index outperformed many of its Western peers, driven by relatively strong domestic economic growth which particularly helped construction and real estate stocks. Consequently, while the record highs to date of the
FTSE 100,
CAC 40 and
AEX, for example, were set during the
dot-com bubble in 1999 and 2000, the IBEX 35's all-time maximum of 15,945.70 was reached on November 8, 2007.
The
2008 financial crisis
The 2008 financial crisis, also known as the global financial crisis (GFC), was a major worldwide financial crisis centered in the United States. The causes of the 2008 crisis included excessive speculation on housing values by both homeowners ...
included extreme
volatility in the markets, and saw both the biggest one day percentage fall and rise in the IBEX 35's history. The index closed 7.5% down on January 21, 2008, the second biggest fall in the Spanish equity market since 1987, and rose a record 6.95% three days later.
Rules
Selection
The composition of the IBEX 35 is reviewed twice per year (in June and December)
by the so-called Technical Advisory Committee, which consists of "representatives of the
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 and
derivatives markets, as well as... renowned experts from the
academic
An academy (Attic Greek: Ἀκαδήμεια; Koine Greek Ἀκαδημία) is an institution of tertiary education. The name traces back to Plato's school of philosophy, founded approximately 386 BC at Akademia, a sanctuary of Athena, the go ...
and financial fields".
If any changes are made, they come into effect the following trading day after the third Friday of the rebalance month
In general, at each review, the 35 companies with the highest trading volume in
Euro
The euro (currency symbol, symbol: euro sign, €; ISO 4217, currency code: EUR) is the official currency of 20 of the Member state of the European Union, member states of the European Union. This group of states is officially known as the ...
s over the previous six months are chosen for inclusion in the index, provided that the average
free float market capitalization of the stock is at least 0.3% of the total market cap of the index.
Any candidate stock must also have either been traded on at least a third of all trading days in the previous six months,
or rank in the top twenty overall in market cap (thus allowing large recently
IPOed companies to be included).
Weighting
The IBEX 35 is a
capitalization-weighted index.
The market cap used to calculate the weighting of each constituent is multiplied by a free float
factor (ranging from 0.1 to 1) depending on the fraction of shares not subject to block ownership.
Any company with 50% or more of its shares considered free float is given a free float factor of 1.
Unlike many other European benchmark indices, the weightings of companies in the IBEX 35 are not capped.
As of 2015, international funds based abroad (chiefly in Norway, the United States, the United Kingdom and Qatar) owned 43% of the index, vs. 16% in 1992.
Such rate of foreign investment was about 5% above the EU average.
Calculation
The index value (given here as ''I'') of the IBEX 35 index is calculated using the following formula:
with ''t'' the moment of calculation; ''Cap'' the free float market cap of a specific listing and ''J'' a coefficient used to adjust the index on the back of capital increases or other
corporate action
A corporate action is an event initiated by a public company that brings or could bring an actual change to the debt securities—Share capital, equity or debt—issued by the company. Corporate actions are typically agreed upon by a company's ...
s so as to ensure continuity. The formula can be adjusted to accommodate changes in index structure, such as the temporary suspension of companies pending news.
Specification
IBEX Mini futures contracts are traded on the MEFF Renta Variable (MEFF-RV) exchange under the ticker symbol BIBX. The full contract specifications for IBEX Mini futures are listed below.
Components
, the following 35 companies make up the index:
Record values
The index reached the following record values:
Annual returns
The following table shows the annual development of the IBEX 35 since 1992.
Related indices
*
IBEX Medium Cap: It is composed by the 20 listed Spanish companies with the largest capitalization after those included in the IBEX 35.
*
IBEX Small Cap: It is composed by the 30 listed Spanish companies with the largest capitalization after those included in the IBEX Medium Cap.
*
IBEX Top Dividendo.
*
BME Growth: a sub-market of Bolsas y Mercados Españoles (BME) for smaller companies to float shares with a more flexible regulatory system than is applicable to the main market.
Past components
All changes are due to market capitalisation unless stated otherwise.
See also
*
Economy of Spain
References
External links
*
Reuters page for .IBEX
{{DEFAULTSORT:Ibex 35
1992 establishments in Spain
1992 introductions
Spanish stock market indices