The FTSE All-Share Index, originally known as the FTSE
Actuaries All Share Index, is a
capitalisation-weighted index, comprising around 600 of more than 2,000 companies traded on the
London Stock Exchange
The London Stock Exchange (LSE) is a stock exchange based in London, England. the total market value of all companies trading on the LSE stood at US$3.42 trillion. Its current premises are situated in Paternoster Square close to St Paul's Cath ...
(LSE). By weighting companies based on their market capitalisation, the index ensures that companies with larger market capitalisations have a greater influence on the index's performance. Since 29 December 2017 the constituents of this index totaled 641 companies. The FTSE All-Share is the aggregation of the
FTSE 100 Index
The Financial Times Stock Exchange 100 Index, also called the FTSE 100 Index, FTSE 100, FTSE, or, informally, the "Footsie" , is the United Kingdom's best-known stock market index of the 100 most highly capitalised blue chips listed on ...
and the
FTSE 250 Index, which are together known as the
FTSE 350 Index, and the
FTSE SmallCap Index. The index is maintained by
FTSE Russell
FTSE Russell is a subsidiary of London Stock Exchange Group (LSEG) that produces, maintains, licenses, and markets stock market indices. The division is notable for the FTSE 100 Index in the UK and the Russell 2000 Index in the US, among others. ...
, a subsidiary of the
London Stock Exchange Group. It aims to represent at least 98% of the full capital value of all UK companies that qualify as eligible for inclusion.
The index base date is 10 April 1962 with a base level of 100.
The index consists of 11
ICB sectors
Sector may refer to:
Places
* Sector, West Virginia, U.S.
Geometry
* Circular sector, the portion of a disc enclosed by two radii and a circular arc
* Hyperbolic sector, a region enclosed by two radii and a hyperbolic arc
* Spherical sector, a ...
, five of which had a market capitalisation exceeding £250 billion . These are
Financials,
Industrials,
Consumer Staples,
Consumer Discretionary, and
Health Care
Health care, or healthcare, is the improvement or maintenance of health via the preventive healthcare, prevention, diagnosis, therapy, treatment, wikt:amelioration, amelioration or cure of disease, illness, injury, and other disability, physic ...
which together account for approximately 76% of the index's capitalisation.
On the same date, there were four companies with a market cap exceeding £100 billion:
AstraZeneca
AstraZeneca plc () (AZ) is a British-Swedish multinational pharmaceutical and biotechnology company with its headquarters at the Cambridge Biomedical Campus in Cambridge, UK. It has a portfolio of products for major diseases in areas includi ...
,
Shell
Shell may refer to:
Architecture and design
* Shell (structure), a thin structure
** Concrete shell, a thin shell of concrete, usually with no interior columns or exterior buttresses
Science Biology
* Seashell, a hard outer layer of a marine ani ...
,
HSBC
HSBC Holdings plc ( zh, t_hk=滙豐; initialism from its founding member The Hongkong and Shanghai Banking Corporation) is a British universal bank and financial services group headquartered in London, England, with historical and business li ...
and
Unilever
Unilever PLC () is a British multinational consumer packaged goods company headquartered in London, England. It was founded on 2 September 1929 following the merger of Dutch margarine producer Margarine Unie with British soap maker Lever B ...
, which together accounted for approximately 24% of the market cap.
Each calendar quarter, the FTSE All-Share's constituents are reviewed and some companies exit or enter the index, resulting in irregular
trading volume and price changes as
market participants rebalance their
portfolios.
See also
*
FTSE 100
The Financial Times Stock Exchange 100 Index, also called the FTSE 100 Index, FTSE 100, FTSE, or, informally, the "Footsie" , is the United Kingdom's best-known stock market index of the 100 most market capitalisation, highly capitalised ...
*
FTSE 250
References
External links
FTSE All-Share Indexon
Yahoo
Yahoo (, styled yahoo''!'' in its logo) is an American web portal that provides the search engine Yahoo Search and related services including My Yahoo, Yahoo Mail, Yahoo News, Yahoo Finance, Yahoo Sports, y!entertainment, yahoo!life, an ...
Finance
Financial Times Lexicon: FTSE All-Share Index DefinitionBloomberg page for ASX:INDFTSE Russell All Share Index factsheet
FTSE Group stock market indices
British stock market indices
1962 establishments in England
1962 introductions
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