Ideally, your overall portfolio should beat the market average. But even the best stock picker will only win with some selections. So we wouldn't blame long term QANTM Intellectual Property Limited (ASX:QIP) shareholders for doubting their decision to hold, with the stock down 40% over a half decade. Shareholders have had an even rougher run lately, with the share price down 22% in the last 90 days.

With that in mind, it's worth seeing if the company's underlying fundamentals have been the driver of long term performance, or if there are some discrepancies.

Check out our latest analysis for QANTM Intellectual Property

In his essay The Superinvestors of Graham-and-Doddsville Warren Buffett described how share prices do not always rationally reflect the value of a business. 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).

Looking back five years, both QANTM Intellectual Property's share price and EPS declined; the latter at a rate of 11% per year. This change in EPS is reasonably close to the 10% average annual decrease in the share price. That suggests that the market sentiment around the company hasn't changed much over that time. So it's fair to say the share price has been responding to changes in EPS.

The graphic below depicts how EPS has changed over time (unveil the exact values by clicking on the image).

Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here.

What About Dividends?

As well as measuring the share price return, investors should also consider the total shareholder return (TSR). The TSR incorporates the value of any spin-offs or discounted capital raisings, along with any dividends, based on the assumption that the dividends are reinvested. It's fair to say that the TSR gives a more complete picture for stocks that pay a dividend. As it happens, QANTM Intellectual Property's TSR for the last 5 years was -19%, which exceeds the share price return mentioned earlier. And there's no prize for guessing that the dividend payments largely explain the divergence!

A Different Perspective

QANTM Intellectual Property shareholders are down 4.4% for the year (even including dividends), but the market itself is up 5.3%. However, keep in mind that even the best stocks will sometimes underperform the market over a twelve month period. Unfortunately, last year's performance may indicate unresolved challenges, given that it was worse than the annualised loss of 4% over the last half decade. 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. While it is well worth considering the different impacts that market conditions can have on the share price, there are other factors that are even more important. To that end, you should learn about the 5 warning signs we've spotted with QANTM Intellectual Property (including 1 which doesn't sit too well with us) .

If you like to buy stocks alongside management, then you might just love this free list of companies. (Hint: insiders have been buying them).

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

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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.