We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

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.

Ignorance isn’t bliss: 3 red flags that investors should look for

Many investors make the same mistake…

You’re reading a free article with opinions that may differ from The Twelfth Magpie’s Premium Investing Services. Become a member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn more, and get a free 'Best Buy Now' stock!.

Many inexperienced investors consistently make the same mistake when contemplating an investment.
 
Typically, they go for familiar names, and rarely probe further than a quick consideration of the price-earnings (P/E) ratio, the yield, and a recent share price chart. Time and again, you can see this tunnel vision in action.
 
It’s not difficult to see why, of course. There’s a sense of comfort that comes from familiar names, often because we feel that we understand the company and its business model better. Moreover, ‘buy what you know’ (and similarly, ‘avoid what you don’t know’) is an approach that has famously found favour with veteran investors such as Warren Buffett and Peter Lynch.

Likewise, P/E ratios and yield figures are widely published, and not difficult to understand. Furthermore, at their simplest, they directly address two questions that are vital for investors: is a given share cheap (or expensive), and – especially for income investors – what level of income can be expected?

Should you buy Rolls Royce shares today?

Before you decide, please take a moment to review this report first. Despite ongoing uncertainties from US tariffs to global conflicts, Mark Rogers and his team believe many UK shares still trade at substantial discounts, offering savvy investors plenty of potential opportunities to learn about.

That’s why this could be an ideal time to secure this valuable research – Mark’s analysts have scoured the markets to reveal 5 of his favourite long-term ‘Buys’. Please, don’t make any big decisions before seeing them.

Faulty facts

The trouble with all this is that it’s a fairly simplistic approach to investment selection. Granted, simplicity has advantages, and complexity disadvantages – but even so, there are dangers in taking such a limited view of potential investments.
 
‘Buying what you know’, for instance, not only excludes vast numbers of businesses that don’t engage directly with the average consumer, but also tends to lead to a very focused (and potentially vulnerable) investment pool of consumer-facing stocks, in industries such as banking, retailing, and consumer products and services.
 
Similarly, P/E and yield figures can also provide a false sense of security. Historic yield figures, for instance – which are the ones that investors most frequently encounter – take no note of a business’s future dividend prospects: a company might have announced the suspension of its dividend, yet the quoted yield will still include the last year’s (now irrelevant) dividends, with the resulting yield probably also exaggerated by a fallen share price.

P/E ratios are not only prone to similar issues, but are also vulnerable to misinterpretation. Is the P/E high, for instance, because the denominator (earnings) has fallen, or because the numerator (price) has risen? Without knowing, you’re really no wiser.

So what else might an investor look at?

There’s no shortage of possibilities. Companies’ investor websites, popular online data sources, companies’ annual reports – there’s a wealth of data out there.
 
And, as I’ve said before, I’m old enough to remember a very different world, in which that wasn’t the case. Compared to now, for instance, investing during the 1970s and 1980s took place in something of an information vacuum. Annual reports had to be requested in print, arriving in the post, and the average investor had little more than the share listings in the Financial Times and Daily Telegraph for figures such as P/E ratio and yield.
 
So given the wealth of information that is available – and available for free, what’s more – it seems crazy not to make better use of it.

Three things that I tend to look at

Debt is an obvious red flag. Some level of debt isn’t a problem, as it provides the business’s shareholders with leverage – personally, I’m not a big fan of total debt avoidance.

As with any other ratio, gearing figures come in various forms, and need careful interpretation. But for a more rough-and-ready approach, just look at the total level of debt, whether it is going up (or hopefully, down), and whether it is for a very justifiable reason (expansion, say, or a recent acquisition).
 
Outsized pension obligations are another warning sign, such as a pension scheme that is either significantly in deficit, or which requires hefty company contributions. As with debt, it’s easy to find this information in annual reports.
 
And the general trajectory of the business is also invaluable, with the vast majority of annual reports highlighting this in the first few pages in the form of handy five-year charts.
 
How fast are sales rising? Profits? Dividends? Charts showing this are easy to interpret, and raise interesting questions. If profits are going up by only 1% a year, for instance, there’s an obvious limit to the amount that the dividend can grow.

Ignorance isn’t bliss

None of this information is particularly difficult to either locate, or interpret. Yet an awful lot of investors don’t take the trouble to do either.
 
Try it – you might be surprised at just how much better-informed an investor you become.

More on Investing Articles

Rolls-Royce's Pearl 10X engine series
Investing Articles

Up nearly 1,400% in 5 years! But are Rolls-Royce shares still secretly undervalued?

After skyrocketing, Rolls-Royce shares are now near an all-time high, but could the engineering giant still have more room to…

Read more »

Happy senior couple hugging and enjoying retirement at home
Investing Articles

By mid-2027, analysts expect £5,000 in Barclays shares to be worth…

Barclays shares have outperformed the FTSE 100 by a wide margin over the last year. And City analysts expect to…

Read more »

Man hanging in the balance over a log at seaside in Scotland
Investing Articles

Near 5-year lows, here’s what the experts say about the Diageo share price

Ben McPoland's questioning his sanity after investing in Diageo. Where do institutional analysts see its share price heading over the…

Read more »

British Airways cabin crew with mobile device
Investing Articles

Up 165% but still with a P/E of 7.9. Is the IAG share price a generational bargain?

The IAG share price has been on fire for the last two years, delivering some of the biggest returns in…

Read more »

Emma Raducanu for Vodafone billboard animation at Piccadilly Circus, London
Investing Articles

Here’s the latest Vodafone share price forecasts for 2027

Up 35% in 12 months, the Vodafone share price is beating the stock market right now, but can this momentum…

Read more »

Close-up image depicting a woman in her 70s taking British bank notes from her colourful leather wallet.
Investing For Beginners

At almost 20-year highs, here’s where the experts think the Barclays share price could go from here

Jon Smith points out that the Barclays share price could still move higher in the coming year, with several positive…

Read more »

Pakistani multi generation family sitting around a table in a garden in Middlesbourgh, North East of England.
Investing Articles

From £5k to £12.4k! Is the current Tesco share price still a bargain?

The Tesco share price has more than doubled investors' money since 2021, but is the stock still a bargain buy…

Read more »

Joyful mature couple having fun together enjoying vacation on city street. Two retired older people enjoying time together during autumn holidays or weekend getaway
Investing Articles

How I’m using a £20k ISA to aim for a £9,982 yearly second income in retirement

Harvey Jones shows how he hopes to generate a bumper second income from investing in FTSE 100 dividend stocks without…

Read more »