It hasn't been the best quarter for Alpha and Omega Semiconductor Limited (NASDAQ:AOSL) shareholders, since the share price has fallen 18% in that time. But in stark contrast, the returns over the last half decade have impressed. In fact, the share price is 188% higher today. So while it's never fun to see a share price fall, it's important to look at a longer time horizon. Only time will tell if there is still too much optimism currently reflected in the share price.

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

Check out our latest analysis for Alpha and Omega Semiconductor

To quote Buffett, 'Ships will sail around the world but the Flat Earth Society will flourish. There will continue to be wide discrepancies between price and value in the marketplace...' One flawed but reasonable way to assess how sentiment around a company has changed is to compare the earnings per share (EPS) with the share price.

Over half a decade, Alpha and Omega Semiconductor managed to grow its earnings per share at 13% a year. This EPS growth is slower than the share price growth of 24% per year, over the same period. So it's fair to assume the market has a higher opinion of the business than it did five years ago. And that's hardly shocking given the track record of growth.

The image below shows how EPS has tracked over time (if you click on the image you can see greater detail).

This free interactive report on Alpha and Omega Semiconductor's earnings, revenue and cash flow is a great place to start, if you want to investigate the stock further.

A Different Perspective

It's good to see that Alpha and Omega Semiconductor has rewarded shareholders with a total shareholder return of 49% in the last twelve months. That's better than the annualised return of 24% over half a decade, implying that the company is doing better recently. Given the share price momentum remains strong, it might be worth taking a closer look at the stock, lest you miss an opportunity. I find it very interesting to look at share price over the long term as a proxy for business performance. But to truly gain insight, we need to consider other information, too. Case in point: We've spotted 1 warning sign for Alpha and Omega Semiconductor you should be aware of.

For those who like to find winning investments this free list of undervalued companies with recent insider purchasing, could be just the ticket.

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.