The FTSE AIM 100 Index
is an index of the top 100 companies on the London Stock Exchange's Alternative Investment Market
weighted by market capitalisation
. It comprises a range of businesses ranging from young, venture capital-backed start-ups to well-established, mature organisations looking to expand.
AIM 100 companies must have their primary listing on the Alternative Investment Market
, and are required to meet various eligibility criteria. The index may contain companies that are also included in the FTSE AIM UK 50 Index
Since its launch in 1995, over 2,500 companies have joined AIM − raising more than £34bn in the process, both through initial public offerings (IPOs) and further capital raisings. Many companies have made the transition to the Exchange's Main Market following their success on AIM.
When the London Stock Exchange created AIM, the objective was to offer smaller companies − from any country and any industry sector − the chance to raise capital on a market with a pragmatic and appropriate approach to regulation. With this in mind, AIM was designed to be a flexible public market offers certain characteristic facilities both for companies and investors.
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.