Those who invested in Amkor Technology (NASDAQ:AMKR) five years ago are up 113%

While Amkor Technology, Inc. (NASDAQ:AMKR) shareholders are probably generally happy, the stock hasn't had particularly good run recently, with the share price falling 13% in the last quarter. But that doesn't change the fact that shareholders have received really good returns over the last five years. It's fair to say most would be happy with 101% the gain in that time. Generally speaking the long term returns will give you a better idea of business quality than short periods can. Ultimately business performance will determine whether the stock price continues the positive long term trend. Unfortunately not all shareholders will have held it for the long term, so spare a thought for those caught in the 21% decline over the last twelve months.

Now it's worth having a look at the company's fundamentals too, because that will help us determine if the long term shareholder return has matched the performance of the underlying business.

Check out our latest analysis for Amkor Technology

To paraphrase Benjamin Graham: Over the short term the market is a voting machine, but over the long term it's a weighing machine. 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).

Over half a decade, Amkor Technology managed to grow its earnings per share at 48% a year. The EPS growth is more impressive than the yearly share price gain of 15% over the same period. So one could conclude that the broader market has become more cautious towards the stock.

You can see how EPS has changed over time in the image below (click on the chart to see the exact values).

Dive deeper into Amkor Technology's key metrics by checking this interactive graph of Amkor Technology's earnings, revenue and cash flow.

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. So for companies that pay a generous dividend, the TSR is often a lot higher than the share price return. In the case of Amkor Technology, it has a TSR of 113% for the last 5 years. That exceeds its share price return that we previously mentioned. This is largely a result of its dividend payments!

A Different Perspective

Investors in Amkor Technology had a tough year, with a total loss of 18% (including dividends), against a market gain of about 29%. However, keep in mind that even the best stocks will sometimes underperform the market over a twelve month period. Longer term investors wouldn't be so upset, since they would have made 16%, each year, over five years. If the fundamental data continues to indicate long term sustainable growth, the current sell-off could be an opportunity worth considering. Most investors take the time to check the data on insider transactions. You can click here to see if insiders have been buying or selling.

Of course, you might find a fantastic investment by looking elsewhere. So take a peek at this free list of companies we expect will 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.