Share your opinion and earn yourself a free Motley Fool premium report!

We are looking for Fools to join a 75 minute online independent market research forum on 15th / 16th December.

To find out more and express your interest please click here

5 top tips to avoid losing your shirt on AIM stocks

These tips could help you find AIM’s (INDEXFTSE:AXX) big winners and avoid its disaster stocks.

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

The more than 900 companies on London’s AIM market have the potential to deliver life-changing profits for investors. A prime example is Asos, now AIM’s biggest company, which has turned £1,000 into £2.95m since floating in 2001.

However, despite some huge individual winners, the AIM index is no higher today than its launch value of 1,000 points in 1995. Hundreds of companies have come and gone over the years and the majority have been utter disasters for investors.

Here are my five top tips to avoid losing your shirt on AIM and increase your chances of finding one of the big long-term winners.

Tip #1 – Check directors’ histories

As legendary investor Warren Buffett says, integrity is the single most important quality to look for in business managers. Without it, the other desirable qualities of intelligence and energy will kill you.

Seek out independent verification of the backgrounds and CVs of AIM directors. Stay away from directors with histories of serial business failure, or who’ve been investigated for or convicted of any financial wrongdoing, or whose CVs cross the boundary from embellishment into fabrication.

In addition to a general internet search, the Companies House website is a great resource.

Tip #2 – Learn about creative and fraudulent accounting

Investing time learning about company accounts should repay you in the long run. In particular, knowledge of accounting shenanigans can steer you away from potential disasters-in-waiting.

There are numerous ways companies can cook the books. An internet search for aggressive accountingwill take you to sources for learning about the signs of potentially creative or fraudulent accounting. The more “red flags” a company’s accounts contain, the higher the risk there’s something seriously wrong. Erring on the side of caution is prudent.

Tip #3 – Accept nothing less than clear and honest communication

As shareholders, we are part-owners of any company we invest in. And we should expect to receive — in addition to accurate accounts — clear and honest communication from those we’ve tasked with managing our business (the directors).

Companies that tel outright lies, that lie by omission or otherwise mislead shareholders in annual reports and other regulatory statements, at AGMs or in informal press or online interviews should be given short shrift.

Tip #4 – If it looks too good to be true…

If a company is trading on a ridiculously cheap valuation, you should take it as a warning to steer well clear, rather than as an invitation to pile in.

In particular, I’ve never known anything other than a bad outcome for investors buying a company trading at a large discount to net cash (that’s to say, when its market cap is a small fraction of the net cash on its balance sheet). The market is essentially signalling that it doesn’t believe the cash is there and that the company is an outright fraud. If a valuation looks too good to be true, it probably is.

Tip #5 – Diversify

Even if you follow tips one through four, it’s the nature of the small-cap universe that even good, well-managed businesses can encounter serious problems or even go under. As such, you can lose your shirt by going all-in on a single stock or a very small number. Diversifying your AIM portfolio across a range of companies will not only decrease the risk of you being wiped out, but also increase your chances of alighting on one of the market’s life-changing winners.

G A Chester has no position in any shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Light trails from traffic moving down The Mound in central Edinburgh, Scotland during December
Investing Articles

Start investing this month for £5 a day? Here’s how!

Is a fiver a day enough to start investing in the stock market? Yes it is -- and our writer…

Read more »

Young mixed-race couple sat on the beach looking out over the sea
Investing Articles

Investing in high-yield dividend stocks isn’t the only way to compound returns in an ISA or SIPP and build wealth

Generous payouts from dividend stocks can be appealing. But another strategy can offer higher returns over the long run, says…

Read more »

Middle-aged white man wearing glasses, staring into space over the top of his laptop in a coffee shop
Investing Articles

A rare buying opportunity for a defensive FTSE 100 company?

A FTSE 100 stock just fell 5% in a day without anything changing in the underlying business. Is this the…

Read more »

Two elderly people relaxing in the summer sunshine Box Hill near Dorking Surrey England
Investing Articles

Simplify your investing life with this one key tip from Warren Buffett

Making moves in the stock market can be complicated. But as Warren Buffett points out, if you don’t want it…

Read more »

Tesco employee helping female customer
Investing Articles

Is Tesco a second income gem after its 12.9% dividend boost?

As a shareholder, our writer was happy to see Tesco raise dividends -- again. Is it finally a serious contender…

Read more »

Rolls-Royce Hydrogen Test Rig at Loughborough University
Investing Articles

Has the Rolls-Royce share price gone too far?

Stephen Wright breaks out the valuation models to see whether the Rolls-Royce share price might still be a bargain, even…

Read more »

Tŵr Mawr lighthouse (meaning "great tower" in Welsh), on Ynys Llanddwyn on Anglesey, Wales, marks the western entrance to the Menai Strait.
Investing Articles

How much do you need to invest in a FTSE 100 ETF for £1,000 monthly passive income?

Andrew Mackie tested whether a FTSE 100 ETF portfolio could deliver £1,000 a month in passive income – the results…

Read more »

Two business people sitting at cafe working on new project using laptop. Young businesswoman taking notes and businessman working on laptop computer.
Investing Articles

One of my top passive income stocks to consider for 2026 is…

This under-the-radar income stock has grown its dividend by over 370% in the last five years! And it might just…

Read more »