As an investor its worth striving to ensure your overall portfolio beats the market average. But in any portfolio, there are likely to be some stocks that fall short of that benchmark. We regret to report that long term Sensata Technologies Holding plc (NYSE:ST) shareholders have had that experience, with the share price dropping 44% in three years, versus a market return of about 23%. And the ride hasn't got any smoother in recent times over the last year, with the price 33% lower in that time.

Now let's have a look at the company's fundamentals, and see if the long term shareholder return has matched the performance of the underlying business.

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. By comparing earnings per share (EPS) and share price changes over time, we can get a feel for how investor attitudes to a company have morphed over time.

Over the three years that the share price declined, Sensata Technologies Holding's earnings per share (EPS) dropped significantly, falling to a loss. This was, in part, due to extraordinary items impacting earnings. Due to the loss, it's not easy to use EPS as a reliable guide to the business. However, we can say we'd expect to see a falling share price in this scenario.

The company's earnings per share (over time) is depicted in the image below (click to see the exact numbers).

It might be well worthwhile taking a look at our free report on Sensata Technologies Holding's earnings, revenue and cash flow.

A Different Perspective

Investors in Sensata Technologies Holding had a tough year, with a total loss of 32% (including dividends), against a market gain of about 28%. 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 5% 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. Case in point: We've spotted 1 warning sign for Sensata Technologies Holding you should be aware of.

But note: Sensata Technologies Holding may not be the best stock to buy. So take a peek at this free list of interesting companies with past earnings growth (and further growth forecast).

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.