If you buy and hold a stock for many years, you'd hope to be making a profit. Furthermore, you'd generally like to see the share price rise faster than the market. Unfortunately for shareholders, while the Penumbra, Inc. (NYSE:PEN) share price is up 49% in the last five years, that's less than the market return. Over the last twelve months the stock price has risen a very respectable 5.9%.

Let's take a look at the underlying fundamentals over the longer term, and see if they've been consistent with shareholders returns.

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).

Penumbra's earnings per share are down 7.3% per year, despite strong share price performance over five years.

Essentially, it doesn't seem likely that investors are focused on EPS. Because earnings per share don't seem to match up with the share price, we'll take a look at other metrics instead.

On the other hand, Penumbra's revenue is growing nicely, at a compound rate of 17% over the last five years. In that case, the company may be sacrificing current earnings per share to drive growth.

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. It's always worth keeping an eye on CEO pay, but a more important question is whether the company will grow earnings throughout the years. So we recommend checking out this free report showing consensus forecasts

A Different Perspective

Penumbra provided a TSR of 5.9% over the last twelve months. But that was short of the market average. On the bright side, the longer term returns (running at about 8% a year, over half a decade) look better. It may well be that this is a business worth popping on the watching, given the continuing positive reception, over time, from the market. 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 1 warning sign with Penumbra , and understanding them should be part of your investment process.

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 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.