FTSE 100
FTSE 100 Index performance between 1984 and 2015
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| Foundation | 1984 |
|---|---|
| Operator | FTSE Group |
| Constituents | 101 |
| Type | Large cap |
| Market cap | £1.7 trillion (as of Sept 2016) |
| Weighting method | Capitalization-weighted |
| Related indices | |
| Website | www |
The Financial Times Stock Exchange 100 Index, also called the FTSE 100 Index, FTSE 100, FTSE, or, informally, the "Footsie" /ˈfʊtsi/, is a of the 100 companies listed on the with the highest market capitalization. It is seen as a gauge of prosperity for businesses regulated by UK company law. The index is maintained by the FTSE Group, a subsidiary of the .
The index began on 3 January 1984 at the base level of 1000. The highest value to date (7,442.62) was reached on 16 March 2017. The previous peaks were over 17 years previously, on the last trading day of 1999, during the dot-com bubble, and in April 2015, when the Index reached 7103.98. After falling during the financial crisis of 2007-2010 to below 3500 in March 2009, the index recovered to a peak of 6091.33 on 8 February 2011, to under the 5000 mark on the morning of 23 September 2011, but reached a record high on the afternoon of 1 March 2017.
The index is maintained by the FTSE Group, a now wholly owned subsidiary of the which originated as a joint venture between the Financial Times and the London Stock Exchange. It is calculated in real time and published every second when the market is open.
The FTSE 100 broadly consists of the largest 100 qualifying UK companies by full market value. Many of these are international companies, however, so the index's movements are a fairly weak indicator of how the UK economy is faring. A better indication of the UK economy is the FTSE 250, as it contains a smaller proportion of international companies. The constituents of the FTSE are determined quarterly, on the Wednesday after the first Friday of the month in March, June, September and December. The values used to make the changes to the indices are taken at the close of business the night before the review.
FTSE 100 companies represent about 81% of the entire market capitalisation of the London Stock Exchange. Even though the FTSE All-Share Index is more comprehensive, the FTSE 100 is by far the most widely used UK stock market indicator. Other related indices are the FTSE 250 Index (which includes the next largest 250 companies after the FTSE 100), the FTSE 350 Index (which is the aggregation of the FTSE 100 and 250), FTSE SmallCap Index and the FTSE Fledgling Index. The FTSE All-Share aggregates the FTSE 100, FTSE 250 and FTSE SmallCap.
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