Fractional shares
Free to open an account
Was this useful?
Why did you choose this rating?

By
Zoe Stabler DipFAEdited by
George Sweeney, DipFAUpdated
Smaller companies on the London Stock Exchange tend to be found on the alternative investment market (AIM) rather than the main market.
Generally, they’re there because they want to raise money for their businesses but either couldn’t afford the costs required or didn’t meet the requirements necessary to list on the London Stock Exchange’s Main Market. If you’re looking to invest in the alternative investment market we’ve compiled some of the key information, risks and how to get started.
AIM stands for alternative investment market. It’s a separate market on the London Stock Exchange and is aimed at helping smaller companies grow.
Some companies choose to list on AIM as a gateway to getting on the Main Market, like Domino’s Pizza group and Hiscox, but there are some recognisably larger brands on AIM, such as ASOS, boohoo.com and Fevertree. AIM comprises over 800 stocks.
Investing in AIM can be as easy as other investments. If you want to invest in a representation of all AIM stocks, then you can invest in a fund that lists AIM companies. You can find funds that suit you on a share trading platform.
Another way is to buy individual stocks. You’ll want to research into which companies you want to invest in and search for them on your chosen share trading platform.
The 20 largest AIM stocks by market capitalisation are:
Looking for other options? Check out these similar products.
How we picked theseTo make comparing even easier we came up with the Finder Score. Costs, features, ease and range of investments across 30+ platforms are all weighted and scaled to produce a score out of 10. The higher the score the better the platform – simple.
Read the full methodologyAll investing should be regarded as longer term. The value of your investments can go up and down, and you may get back less than you invest. Past performance is no guarantee of future results. If you’re not sure which investments are right for you, please seek out a financial adviser. Capital at risk.
There aren’t any AIM tracker funds or ETFs, mainly because it’d be quite difficult to do so due to the size of the companies in the index.
As you’d be investing in companies very early on, there’s more chance that they’ll fail and therefore there’s more risk associated with your investments. This added risk of volatility or associated tax incentives is what attracts some investors to AIM companies.
By investing in AIM companies, you might be able to take advantage of tax relief such as inheritance tax relief, capital gains tax relief and tax relief on shares that qualify for the Enterprise Investment Scheme (EIS). As always, you can get tax relief from holding your stocks in a stocks and shares ISA.
A lot of the companies listed on AIM are still young which means that they aren’t as liquid (meaning it’s harder to sell shares). There is generally more risk associated with these stocks compared with the London Stock Exchange’s Main Market, which is made up of established companies.
The coronavirus pandemic shook up all industries and stock indices, AIM included. It lost 38% in value between January and mid March, its lowest point during the pandemic but it has bounced back a little since then and recovered most of its losses.
AIM still isn’t trading at the same levels that it was pre-pandemic, so it’s up to you to decide whether you think it will continue to grow further.
Companies on the AIM don’t have to be small – there are some well known brands on the alternative investment market. If you want to invest in these stocks then make sure you’ve done your research and you know the risks.
All investing should be regarded as longer term. The value of your investments can go up and down, and you may get back less than you invest. Past performance is no guarantee of future results. If you’re not sure which investments are right for you, please seek out a financial adviser. Capital at risk.
Zoe was a senior writer at Finder specialising in investment and banking, and during this time, she joined the Women in FinTech Powerlist 2022. She is currently a senior money writer at Be Clever With Your Cash. Zoe has a BA in English literature and a Diploma for Financial Advisers. She has several years of experience in writing about all things personal finance. Zoe has a particular love for spreadsheets, having also worked as a management accountant. In her spare time, you’ll find Zoe skating at her local ice rink. See full bio
We’ve partnered with the award-winning Charles Stanley Direct to show how multi-asset funds take the friction out of investing. (Paid content)
Looking for the best defence companies to invest in? Discover key players plus risks and rewards of this sector.
Find out how to invest in aluminium stocks, plus some popular stock options.
Consider these benefits and drawbacks before you invest in uranium stocks.
IPOs could be an opportunity for investors. Check out our calendar of upcoming IPOs and keep tabs on rumoured, recent and filed for IPOs.
This guide discusses the ways that you can invest in platinum, either in physical form or on the stock market.
What are dividend stocks, and how do you invest in them in the UK? We explain how to find stocks with high dividend yields and details about safe dividends.
All the steps you need to follow to buy shares in some of football’s biggest teams.
Learn where to buy gold, how to invest in gold and about gold’s historical performance as an investment. Find out all the need-to-knows with our extensive guide.
Finder.com is an independent comparison platform and information service that aims to provide you with the tools you need to make better decisions. While we are independent, the offers that appear on this site are from companies from which Finder receives compensation. We may receive compensation from our partners for placement of their products or services. We may also receive compensation if you click on certain links posted on our site. While compensation arrangements may affect the order, position or placement of product information, it doesn't influence our assessment of those products. Please don't interpret the order in which products appear on our Site as any endorsement or recommendation from us. Finder compares a wide range of products, providers and services but we don't provide information on all available products, providers or services. Please appreciate that there may be other options available to you than the products, providers or services covered by our service.
We update our data regularly, but information can change between updates. Confirm details with the provider you're interested in before making a decision.