Long term investing can be life changing when you buy and hold the truly great businesses. And highest quality companies can see their share prices grow by huge amounts. For example, the Steel Dynamics, Inc. (NASDAQ:STLD) share price is up a whopping 425% in the last half decade, a handsome return for long term holders. And this is just one example of the epic gains achieved by some long term investors. And in the last week the share price has popped 7.7%. The company reported its financial results recently; you can catch up on the latest numbers by reading our company report.

Since it's been a strong week for Steel Dynamics shareholders, let's have a look at trend of the longer term fundamentals.

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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 imperfect but simple way to consider how the market perception of a company has shifted is to compare the change in the earnings per share (EPS) with the share price movement.

During five years of share price growth, Steel Dynamics achieved compound earnings per share (EPS) growth of 21% per year. This EPS growth is slower than the share price growth of 39% 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 company's earnings per share (over time) is depicted in the image below (click to see the exact numbers).

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

What About Dividends?

It is important to consider the total shareholder return, as well as the share price return, for any given stock. Whereas the share price return only reflects the change in the share price, the TSR includes the value of dividends (assuming they were reinvested) and the benefit of any discounted capital raising or spin-off. Arguably, the TSR gives a more comprehensive picture of the return generated by a stock. In the case of Steel Dynamics, it has a TSR of 477% for the last 5 years. That exceeds its share price return that we previously mentioned. The dividends paid by the company have thusly boosted the total shareholder return.

A Different Perspective

Investors in Steel Dynamics had a tough year, with a total loss of 2.8% (including dividends), against a market gain of about 9.5%. 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 42%, each year, over five years. It could be that the recent sell-off is an opportunity, so it may be worth checking the fundamental data for signs of a long term growth trend. 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. Consider for instance, the ever-present spectre of investment risk. We've identified 2 warning signs with Steel Dynamics , and understanding them should be part of your investment process.

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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.