In order to justify the effort of selecting individual stocks, it's worth striving to beat the returns from a market index fund. But in any portfolio, there will be mixed results between individual stocks. At this point some shareholders may be questioning their investment in Westamerica Bancorporation (NASDAQ:WABC), since the last five years saw the share price fall 16%. Even worse, it's down 8.1% in about a month, which isn't fun at all. This could be related to the recent financial results - you can catch up on the most recent data by reading our company report.

On a more encouraging note the company has added US$55m to its market cap in just the last 7 days, so let's see if we can determine what's driven the five-year loss for shareholders.

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).

While the share price declined over five years, Westamerica Bancorporation actually managed to increase EPS by an average of 15% per year. Given the share price reaction, one might suspect that EPS is not a good guide to the business performance during the period (perhaps due to a one-off loss or gain). Or possibly, the market was previously very optimistic, so the stock has disappointed, despite improving EPS.

It's strange to see such muted share price performance despite sustained growth. Perhaps a clue lies in other metrics.

Revenue is actually up 12% over the time period. So it seems one might have to take closer look at the fundamentals to understand why the share price languishes. After all, there may be an opportunity.

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

We're pleased to report that the CEO is remunerated more modestly than most CEOs at similarly capitalized companies. But while CEO remuneration is always worth checking, the really important question is whether the company can grow earnings going forward. So we recommend checking out this free report showing consensus forecasts

What About Dividends?

It is important to consider the total shareholder return, as well as the share price return, for any given stock. 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. Arguably, the TSR gives a more comprehensive picture of the return generated by a stock. As it happens, Westamerica Bancorporation's TSR for the last 5 years was -1.4%, which exceeds the share price return mentioned earlier. This is largely a result of its dividend payments!

A Different Perspective

Westamerica Bancorporation provided a TSR of 15% over the last twelve months. 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 0.3% endured over half a decade. So this might be a sign the business has turned its fortunes around. It's always interesting to track share price performance over the longer term. But to understand Westamerica Bancorporation better, we need to consider many other factors. To that end, you should be aware of the 1 warning sign we've spotted with Westamerica Bancorporation .

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.