RATIONAL (ETR:RAA) investors are sitting on a loss of 28% if they invested a year ago

The simplest way to benefit from a rising market is to buy an index fund. Active investors aim to buy stocks that vastly outperform the market - but in the process, they risk under-performance. Unfortunately the RATIONAL Aktiengesellschaft (ETR:RAA) share price slid 29% over twelve months. That's disappointing when you consider the market returned 16%. On the other hand, the stock is actually up 5.7% over three years.

It's worthwhile assessing if the company's economics have been moving in lockstep with these underwhelming shareholder returns, or if there is some disparity between the two. So let's do just that.

AI is about to change healthcare. These 20 stocks are working on everything from early diagnostics to drug discovery. The best part - they are all under $10bn in marketcap - there is still time to get in early.

While the efficient markets hypothesis continues to be taught by some, it has been proven that markets are over-reactive dynamic systems, and investors are not always rational. One way to examine how market sentiment has changed over time is to look at the interaction between a company's share price and its earnings per share (EPS).

During the unfortunate twelve months during which the RATIONAL share price fell, it actually saw its earnings per share (EPS) improve by 8.8%. It could be that the share price was previously over-hyped.

The divergence between the EPS and the share price is quite notable, during the year. So it's easy to justify a look at some other metrics.

RATIONAL's revenue is actually up 5.8% over the last year. Since we can't easily explain the share price movement based on these metrics, it might be worth considering how market sentiment has changed towards the stock.

You can see below how earnings and revenue have changed over time (discover the exact values by clicking on the image).

RATIONAL is a well known stock, with plenty of analyst coverage, suggesting some visibility into future growth. If you are thinking of buying or selling RATIONAL stock, you should check out this free report showing analyst consensus estimates for future profits.

A Different Perspective

Investors in RATIONAL had a tough year, with a total loss of 28% (including dividends), against a market gain of about 16%. However, keep in mind that even the best stocks will sometimes underperform the market over a twelve month period. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 1.1% per year over five years. Generally speaking long term share price weakness can be a bad sign, though contrarian investors might want to research the stock in hope of a turnaround. It's always interesting to track share price performance over the longer term. But to understand RATIONAL better, we need to consider many other factors. Consider risks, for instance. Every company has them, and we've spotted 1 warning sign for RATIONAL you should know about.

If you are like me, then you will not want to miss this free list of undervalued small caps that insiders are buying.

Please note, the market returns quoted in this article reflect the market weighted average returns of stocks that currently trade on German exchanges.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.