When we invest, we're generally looking for stocks that outperform the market average. And while active stock picking involves risks (and requires diversification) it can also provide excess returns. For example, the Advanced Technology & Materials Co., Ltd. (SZSE:000969) share price is up 26% in the last 5 years, clearly besting the market return of around 6.6% (ignoring dividends).

The past week has proven to be lucrative for Advanced Technology & Materials investors, so let's see if fundamentals drove the company's five-year performance.

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 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).

During the five years of share price growth, Advanced Technology & Materials moved from a loss to profitability. That's generally thought to be a genuine positive, so investors may expect to see an increasing share price. Since the company was unprofitable five years ago, but not three years ago, it's worth taking a look at the returns in the last three years, too. We can see that the Advanced Technology & Materials share price is down 6.0% in the last three years. During the same period, EPS grew by 17% each year. So there seems to be a mismatch between the positive EPS growth and the change in the share price, which is down -2.0% per year.

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

It's probably worth noting that the CEO is paid less than the median at similar sized companies. But while CEO remuneration is always worth checking, the really important question is whether the company can grow earnings going forward. It might be well worthwhile taking a look at our free report on Advanced Technology & Materials' earnings, revenue and cash flow.

What About Dividends?

As well as measuring the share price return, investors should also consider the total shareholder return (TSR). 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. As it happens, Advanced Technology & Materials' TSR for the last 5 years was 30%, which exceeds the share price return mentioned earlier. The dividends paid by the company have thusly boosted the total shareholder return.

A Different Perspective

Although it hurts that Advanced Technology & Materials returned a loss of 7.0% in the last twelve months, the broader market was actually worse, returning a loss of 18%. Of course, the long term returns are far more important and the good news is that over five years, the stock has returned 5% for each year. In the best case scenario the last year is just a temporary blip on the journey to a brighter future. 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. Consider for instance, the ever-present spectre of investment risk. We've identified 1 warning sign with Advanced Technology & Materials , 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 Chinese 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.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com