AEX index
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The AEX index, derived from Amsterdam Exchange index, is a
stock market index In finance, a stock index, or stock market index, is an index that measures a stock market, or a subset of the stock market, that helps investors compare current stock price levels with past prices to calculate market performance. Two of the ...
composed of
Dutch Dutch commonly refers to: * Something of, from, or related to the Netherlands * Dutch people () * Dutch language () Dutch may also refer to: Places * Dutch, West Virginia, a community in the United States * Pennsylvania Dutch Country People E ...
companies A company, abbreviated as co., is a legal entity representing an association of people, whether natural, legal or a mixture of both, with a specific objective. Company members share a common purpose and unite to achieve specific, declared go ...
that trade on Euronext Amsterdam, formerly known as the ''Amsterdam Stock Exchange''. Started in 1983, the index is composed of a maximum of 25 of the most frequently traded
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 ...
on the exchange. It is one of the main national indices of the stock exchange group
Euronext Euronext N.V. (short for European New Exchange Technology) is a pan-European bourse that offers various trading and post-trade services. Traded assets include regulated equities, exchange-traded funds (ETF), warrants and certificates, bonds, ...
alongside
Euronext Brussels The Brussels Stock Exchange (french: Bourse de Bruxelles, nl, Beurs van Brussel), abbreviated to BSE, was founded in Brussels, Belgium, by decree of Napoleon in 1801. In 2002, the BSE merged with the Amsterdam, Lisbon and Paris stock exchanges ...
'
BEL20 The BEL 20 is the benchmark stock market index of Euronext Brussels. It tracks the performance of 20 most capitalized and liquid stocks traded in Belgium. In general, the index consists of a minimum of 10 and a maximum of 20 companies traded ...
,
Euronext Dublin Euronext Dublin (formerly The Irish Stock Exchange, ISE; ga, Stocmhalartán na hÉireann) is Ireland's main stock exchange, and has been in existence since 1793. The Euronext Dublin lists debt and fund securities and is used as a European g ...
's
ISEQ 20 The ISEQ 20 is a benchmark stock market index composed of companies that trade on Euronext Dublin. The index comprises the 20 companies with the highest trading volume and market capitalisation contained within the ISEQ Overall Index. The index w ...
,
Euronext Lisbon Euronext Lisbon is a stock exchange in Lisbon, Portugal. It is part of Euronext pan-European exchange. Euronext Lisbon trades equities, public and private bonds, participation bonds, warrants, corporate warrants, investment trust units, and exc ...
's
PSI-20 The PSI-20 (an acronym of Portuguese Stock Index) is a benchmark stock market index of companies that trade on Euronext Lisbon, the main stock exchange of Portugal. The index tracks the prices of the twenty listings with the largest market cap ...
, the
Oslo Bors Oslo Stock Exchange ( no, Oslo Børs) (OSE: OSLO) is a stock exchange within the Nordic countries and offers Norway’s only regulated markets for securities trading today. The stock exchange offers a full product range including equities, deriv ...
OBX Index The OBX Index is a stock market index which lists the 25 most liquid companies on the main index of the Oslo Stock Exchange in Norway. All stocks on the OBX list can be traded with options and futures. The companies on the OBX list are rotated tw ...
, and
Euronext Paris Euronext Paris is France's securities market, formerly known as the Paris Bourse, which merged with the Amsterdam, Lisbon, and Brussels exchanges in September 2000 to form Euronext NV. As of 2022, the 795 companies listed had a combined marke ...
's
CAC 40 The CAC 40 (french: CAC quarante ) (''Cotation Assistée en Continu'') is a benchmark French stock market index. The index represents a capitalization-weighted measure of the 40 most significant stocks among the 100 largest market caps on the E ...
.


History

The AEX started from a base level of 100 index points on 3 January 1983 (a corresponding value of 45.378 is used for historic comparisons due to the adoption of the
Euro The euro ( symbol: €; code: EUR) is the official currency of 19 out of the member states of the European Union (EU). This group of states is known as the eurozone or, officially, the euro area, and includes about 340 million citizens . ...
). The index's peak to date was set on 26th October 2021 816.91 After the dot-com bubble in 1999, the index value more than halved over the following three years before recovering in line with most global financial markets. The AEX index dealt with its second largest one-day loss on March 12, 2020, when the index closed down almost 11% during the
coronavirus pandemic The COVID-19 pandemic, also known as the coronavirus pandemic, is an ongoing global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The novel virus was first identified ...
. The AEX index enjoyed its third largest one-day loss on September 29, 2008, when the index closed down almost 9%. The decade between 1998 and 2008 has been bad for the AEX index, as it has been the worst performing stock index except for the
OMX Iceland 15 The OMX Iceland 15 (formerly the ICEX15) is a defunct stock market index which consisted of a maximum of 15 companies listed on the OMX Iceland Stock Exchange with the highest market capitalization. At the final official review of the index effect ...
. The preceding years were a lot better compared to the rest of the world.


Annual Returns

The following table shows the annual development of the AEX index since 1983.


Rules


Selection

As of 2011, the AEX index composition is reviewed four times a year - a full "annual" review in March and interim "quarterly" reviews in June, September and December. Any changes made as a result of the reviews take effect on the third Friday of the month. Previously reviews were held in March and September only. Prior to 2008, index changes were made only annually in March. At the main March review date, the 23 companies listed on Euronext Amsterdam's regulated market with the highest share turnover (in
Euro The euro ( symbol: €; code: EUR) is the official currency of 19 out of the member states of the European Union (EU). This group of states is known as the eurozone or, officially, the euro area, and includes about 340 million citizens . ...
s) over the previous year are admitted to the index. Of the companies ranked between 24th and 27th, a further two are selected with preference given to existing constituents of the index. Companies which have fewer than 25% of shares considered
free float In the context of stock markets, the public float or free float represents the portion of shares of a corporation that are in the hands of public investors as opposed to locked-in shares held by promoters, company officers, controlling-interest inv ...
on Euronext Amsterdam are, however, ineligible for inclusion. Unlike some other European benchmark equity indices (such as the OMXS30), if a company has more than one class of shares traded on the exchange, only the most frequently traded of these will be accepted into the AEX. If a company or companies are removed from the index due to delisting, acquisition or another reason, no replacements are made until the next review date. At the three interim reviews in June, September and December, no changes are made to the AEX unless either the index has seen one or more constituents removed, or a non-constituent possesses a share turnover ranked 15th or higher overall over the previous 12 months. If vacancies are to be filled, the highest-ranking non-AEX companies are selected to join the index.


Weighting

The AEX is a
capitalization-weighted index A capitalization-weighted (or cap-weighted) index, also called a market-value-weighted index is a stock market index whose components are weighted according to the total market value of their outstanding shares. Every day an individual stock's ...
. At each main annual review, the index weightings of companies in the index are capped at 15%, but range freely with
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 ...
subsequently. The index weights are calculated with respect to the closing prices of the relevant companies on March 1. At the interim reviews, weightings after adjustment are left as close as possible to those of the previous day and are not re-capped.


Calculation

The index comprises a
basket A basket is a container that is traditionally constructed from stiff fibers and can be made from a range of materials, including wood splints, runners, and cane. While most baskets are made from plant materials, other materials such as horsehai ...
of shares, the numbers of which are based on the constituent weights and index value at the time of readjustment. The value of the index at any given time, It, is calculated using the following formula: I_t = \frac with ''t'' the day of calculation; ''N'' the number of constituent shares in the index (usually 25); ''Qi,t'' the number of shares of company ''i'' on day ''t''; ''Fi,t'' the free float factor of share ''i''; ''fi,t'' the capping factor of share ''i'' (exactly 1 for all companies not subject to the 15% cap); ''Ci,t'' the price of share ''i'' on day ''t''; and ''dt'' the index divisor (a factor calculated from the base capitalisation of the index, which is updated to reflect corporate actions and other index changes.


Contract Specifications

The AEX Index is traded as a future on the Euronext Equities & Index Derivatives exchange (EUREID) under the ticker symbol FTI. The size of each contract is 200 EURO x AEX Index points (e.g. 200 X 667.55 = €133,510).


Composition

The index is composed of the following listings as of 30 June 2021.


See also

*
AMX index The AMX index, derived from Amsterdam Midkap Index, also known as Midkap index or simply Midkap, is a stock market index composed of Dutch companies that trade on Euronext Amsterdam, formerly known as the ''Amsterdam Stock Exchange''. The index wa ...
, the market index of the next 25 largest funds on Euronext Amsterdam. * AScX index, market index of 25 small caps on Euronext Amsterdam.


References


External links


Official Quote for the Index
(
Euronext Euronext N.V. (short for European New Exchange Technology) is a pan-European bourse that offers various trading and post-trade services. Traded assets include regulated equities, exchange-traded funds (ETF), warrants and certificates, bonds, ...
website)
Bloomberg page for AEX:INDReuters page for .AEX
{{DEFAULTSORT:Aex Index Dutch stock market indices Euronext indices