Ideally, your overall portfolio should beat the market average. But in any portfolio, there will be mixed results between individual stocks. So we wouldn't blame long term American Assets Trust, Inc. (NYSE:AAT) shareholders for doubting their decision to hold, with the stock down 43% over a half decade.

Given the past week has been tough on shareholders, let's investigate the fundamentals and see what we can learn.

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).

While the share price declined over five years, American Assets Trust actually managed to increase EPS by an average of 4.3% per year. So it doesn't seem like EPS is a great guide to understanding how the market is valuing the stock. Or possibly, the market was previously very optimistic, so the stock has disappointed, despite improving EPS.

By glancing at these numbers, we'd posit that the the market had expectations of much higher growth, five years ago. Having said that, we might get a better idea of what's going on with the stock by looking at other metrics.

The steady dividend doesn't really explain why the share price is down. While it's not completely obvious why the share price is down, a closer look at the company's history might help explain it.

The image below shows how earnings and revenue have tracked over time (if you click on the image you can see greater detail).

It is of course excellent to see how American Assets Trust has grown profits over the years, but the future is more important for shareholders. It might be well worthwhile taking a look at our free report on how its financial position has changed over time.

What About Dividends?

As well as measuring the share price return, investors should also consider the total shareholder return (TSR). Whereas the share price return only reflects the change in the share price, the TSR includes the value of dividends (assuming they were reinvested) and the benefit of any discounted capital raising or spin-off. So for companies that pay a generous dividend, the TSR is often a lot higher than the share price return. We note that for American Assets Trust the TSR over the last 5 years was -28%, which is better than the share price return mentioned above. And there's no prize for guessing that the dividend payments largely explain the divergence!

A Different Perspective

American Assets Trust shareholders are up 22% for the year (even including dividends). But that was short of the market average. On the bright side, that's still a gain, and it is certainly better than the yearly loss of about 5% endured over half a decade. So this might be a sign the business has turned its fortunes around. 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. Consider for instance, the ever-present spectre of investment risk. We've identified 3 warning signs with American Assets Trust (at least 2 which are potentially serious) , and understanding them should be part of your investment process.

If you would prefer to check out another company -- one with potentially superior financials -- then do not miss this free list of companies that have proven they can grow earnings.

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