AIM (formerly the Alternative Investment Market) is a London Stock Exchange sub-market that was established on June 19, 1995, to replace the previous Unlisted Securities Market (USM), which had been in operation since 1980. It enables companies that are smaller, less developed, or want/need a more flexible approach to governance to float shares under a more flexible regulatory system than the main market.
A London Stock Exchange (LSE) sub-market that allows smaller companies to raise capital with a more flexible regulatory system than is required for the LSE's main market. There are no CFDs available on AIM-listed shares.

The Alternative Investment Market (AIM) is a sub-market of the London Stock Exchange designed to help smaller, growing companies raise capital by listing shares. Launched in 1995, AIM provides a more flexible regulatory environment compared to the main market, making it attractive to early-stage and high-growth businesses. It allows companies from various sectors and countries to access public funding without the extensive requirements of a traditional stock exchange listing. Investors in AIM stocks can potentially benefit from high returns but also face higher risks due to the volatility and limited transparency of some listed firms. AIM plays a key role in supporting innovation and entrepreneurship by connecting ambitious companies with institutional and private investors seeking growth opportunities.