While Flat Glass Group Co., Ltd. (HKG:6865) shareholders are probably generally happy, the stock hasn't had particularly good run recently, with the share price falling 24% 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 134% the gain in that time. We think it's more important to dwell on the long term returns than the short term returns. The more important question is whether the stock is too cheap or too expensive today. While the long term returns are impressive, we do have some sympathy for those who bought more recently, given the 42% drop, in the last year.

While this past week has detracted from the company's five-year return, let's look at the recent trends of the underlying business and see if the gains have been in alignment.

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, Flat Glass Group managed to grow its earnings per share at 41% a year. This EPS growth is higher than the 19% average annual increase in the share price. So it seems the market isn't so enthusiastic about the stock these days. This cautious sentiment is reflected in its (fairly low) P/E ratio of 7.06.

The image below shows how EPS has tracked over time (if you click on the image you can see greater detail).

We like that insiders have been buying shares in the last twelve months. Even so, future earnings will be far more important to whether current shareholders make money. Dive deeper into the earnings by checking this interactive graph of Flat Glass Group's 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). 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. We note that for Flat Glass Group the TSR over the last 5 years was 154%, which is better than the share price return mentioned above. And there's no prize for guessing that the dividend payments largely explain the divergence!

A Different Perspective

While the broader market gained around 1.2% in the last year, Flat Glass Group shareholders lost 39% (even including dividends). 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 21%, 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. Even so, be aware that Flat Glass Group is showing 1 warning sign in our investment analysis , you should know about...

Flat Glass Group is not the only stock insiders are buying. So take a peek at this free list of small cap companies at attractive valuations which insiders have been buying.

Please note, the market returns quoted in this article reflect the market weighted average returns of stocks that currently trade on Hong Kong 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.