The FTSE AIM UK 100 Index was introduced on 16 May 2005, and is a market-capitalisation-weighted stock market index. The index incorporates the largest 100 companies (by capitalisation) which have their primary listing on the

Alternative Investment Market AIM (formerly the Alternative Investment Market) is a sub-market of the London Stock Exchange that was launched on 19 June 1995 as a replacement to the previous Unlisted Securities Market (USM) that had been in operation since 1980. It allows ...

(AIM). It includes UK and international domiciled companies. The index is reviewed quarterly, and the constituent companies may change based on market capitalisation data as at the end of February, May, August and November. 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 FTSE 100 Index, Russell 2000 Index, among other indices. The brand and divisio ...

, a subsidiary of the

London Stock Exchange Group London Stock Exchange Group plc (LSEG) is a United Kingdom-based stock exchange and financial information company headquartered in the City of London, England. It owns the London Stock Exchange (on which it is also listed), Refinitiv, LSEG T ...

References

External links

FTSE Group website

The AIM constituents - DigitalLook
London Stock Exchange European stock market indices {{stockexchange-stub