FTSE 100 investors! 2 ratios I’d consider when analysing investments

There are many financial ratios FTSE 100 (INDEXFTSE: UKX) investors can use to analyse their holdings. Two of them are return on equity and debt-to-equity.

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.

With the decision to become a stock investor, possibly also comes anxiety as you may not be sure about how to choose the best companies appropriate for a long-term portfolio. Financial ratios may play an important part in evaluating the performance and financial condition of a business.

Today I’d like to discuss two metrics that may help interested readers make better-informed decisions when trying to sort the winner shares from the losers.

Return on equity

Is management able to turn assets into profits?

Return on equity (ROE) is a profitability ratio that is used to assess how efficient and productive a company is with its money.

The formula is derived by dividing a company’s net income by its share capital base. In other words, it measures how much a company is earning relative to the money it has kept within the business.

It is expressed as a percentage, such as 18%. A higher ROE indicates that management is more effective at converting capital into profit. My own rule of thumb is to look for ROEs above 15% as I screen for investments.

Investors may also use ROE to compare competitors in a given industry. So, all else being equal, a high ROE is better than a low one.

Consumer goods giant Unilever has an impressive ROE of 81%. By comparison, that of Reckitt Benckiser currently stands at 14%.

Debt-to-equity ratio

For most companies, debt is an important reality of running a business as they may need to borrow for a variety of reasons. Building or growing a business requires investment capital.

Therefore, looking at the ROE alone may not always always suffice, as high debt levels may boost a company’s ROE and give the illusion that the business is generating high returns.

In other words, management can significantly increase ROE by taking on debt. However, debt may also mean increased level of risk for the company. With increased risk, investors would like to see increased returns.

If the cost of debt financing outweighs the increased returns generated, then investors may be alarmed and sell a company’s shares. 

Investors therefore also need to look at the debt-to-equity ratio in order to ascertain if debt levels might be too high with respect to the share capital of the company. This metric is a leverage or gearing ratio that shows whether a company’s capital structure is tilted toward debt or equity financing. 

A high debt-to-equity ratio generally means that a company has aggressively financed its growth with debt.

This metric varies across industries. For example, a capital-intensive industry like manufacturing often has a higher ratio that can be greater than 2.

If a business has a debt-to-equity ratio of 0.75, it means that its liabilities are 75% of shareholders’ equity, or that creditors provide 75p for each pound provided by shareholders to finance the assets.

If the debt-to-equity ratio is quite low, for example close to zero, then investors may become sceptical. After all, management may not be realising the potential returns it could attain from further borrowing to grow operations.

Unilever has a debt-to-equity ratio of 2.2. Thus it’s worth noting the significant use of debt by Unilever. Its high ROE has clearly benefited from the group’s use of debt.

Reckitt Benckiser’s debt-to-equity is about 1, which highlights that creditors and shareholders equally contribute to its assets.

tezcang has no position in any of the shares mentioned. The Motley Fool UK owns shares of and has recommended Unilever. 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

Close-up of British bank notes
Investing Articles

This UK penny stock is tipped to double by City analysts!

What should we do when a favourite penny stock falls due to short-term pressures? Consider buying for the long term,…

Read more »

Calendar showing the date of 5th April on desk in a house
Investing Articles

£390 of income a week from a £20k Stocks and Shares ISA? Here’s how!

Christopher Ruane explains how someone with a £20k Stocks and Shares ISA and long-term timeframe could target hundreds of pounds…

Read more »

Abstract 3d arrows with rocket
Investing Articles

Up 25% YTD! Is this red-hot penny stock still ‘cheap’?

This penny stock has been on fire in 2026. Ken Hall takes a closer look at the investment story behind…

Read more »

Man smiling and working on laptop
Investing Articles

Stock market correction? A passive income opportunity!

Looking to turbocharge your passive income? The stock market correction could be a once-in-a-decade chance to do just that, says…

Read more »

Black woman using smartphone at home, watching stock charts.
Investing Articles

Are investors running scared of Babcock and BAE Systems shares?

BAE Systems shares have had a brilliant run, and other UK defence stocks have been flying too. But Harvey Jones…

Read more »

Mature black woman at home texting on her cell phone while sitting on the couch
Investing Articles

As the FTSE 100 falls, savvy investors are looking for stocks to buy for the rebound

Many FTSE stocks have now fallen 10% or more from their 2026 highs. For long-term investors, exciting opportunities are emerging.

Read more »

Portrait Of Senior Couple Climbing Hill On Hike Through Countryside In Lake District UK Together
Investing Articles

Should investors consider buying resilient Admiral Group and Tesco shares as markets wobble?

Harvey Jones is impressed by how Tesco shares have held up in the current market volatility, while Admiral has been…

Read more »

DIVIDEND YIELD text written on a notebook with chart
Investing Articles

Down 15% in a month and yielding 7.5%! Should I buy even more of my favourite dividend stock?

Harvey Jones says this brilliant FTSE 100 dividend stock is suddenly cheaper due to recent market volatility. And the yield…

Read more »