By buying an index fund, investors can approximate the average market return. But if you choose individual stocks with prowess, you can make superior returns. For example, SIA Engineering Company Limited (SGX:S59) shareholders have seen the share price rise 15% over three years, well in excess of the market return (4.8%, not including dividends). However, more recent returns haven't been as impressive as that, with the stock returning just 4.7% in the last year, including dividends.

So let's investigate and see if the longer term performance of the company has been in line with the underlying business' progress.

See our latest analysis for SIA Engineering

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 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.

During three years of share price growth, SIA Engineering achieved compound earnings per share growth of 101% per year. This EPS growth is higher than the 5% average annual increase in the share price. So it seems investors have become more cautious about the company, over time.

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

We know that SIA Engineering has improved its bottom line over the last three years, but what does the future have in store? It might be well worthwhile taking a look at our free report on how its financial position has changed over time.

What About Dividends?

When looking at investment returns, it is important to consider the difference between total shareholder return (TSR) and share price return. The TSR is a return calculation that accounts for the value of cash dividends (assuming that any dividend received was reinvested) and the calculated value of any discounted capital raisings and spin-offs. Arguably, the TSR gives a more comprehensive picture of the return generated by a stock. In the case of SIA Engineering, it has a TSR of 21% for the last 3 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

SIA Engineering shareholders are up 4.7% for the year (even including dividends). Unfortunately this falls short of the market return. On the bright side, that's still a gain, and it's actually better than the average return of 0.8% over half a decade It is possible that returns will improve along with the business fundamentals. 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 1 warning sign with SIA Engineering , 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 Singaporean 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.