What is AIM?

Definition:

The London Stock Exchange’s global market for smaller and growing companies. AIM is not a UK Regulated Market and AIM issuers are subject to rules than are less stringent that the Main Market.

Formerly known as the Alternative Investment Market.

Return to Glossary

You may also like:

  • a tall tower on fire
    Market Spotlight: What now for oil and gas M&A?

    March 18, 2026 | Blog

    Read more

  • a group of black and white squares
    Expert Spotlight: Leveraging AI for due diligence success

    March 18, 2026 | Blog

    Read more

  • Beyond the Hype - What an AI Reset Could Mean for Smarter Growth: What We Heard at ACG M&A Tech Connect 2026

    March 12, 2026 | Blog

    Read more

Your complete M&A platform

Datasite provides you one end-to-end platform that supports you across all stages of the deal.
Market Intelligence

Know your world, completely
Premier sell-side data room, Datasite Diligence™
Datasite Diligence

Trust the premier data room
Buy-side M&A data room platform, Datasite Acquire®
Datasite Acquire

Trust the premier buy-side data room
Datasite Pipeline

Capture opportunities in one place
Data room platform for deal marketing, Datasite Outreach™
Datasite Outreach

Optimize your deal marketing
Datasite Prepare

Be ready for any transaction
Secure data room platform, Datasite Archive™
Datasite Archive

Preserve and protect your project data