When you buy shares in a company, it's worth keeping in mind the possibility that it could fail, and you could lose your money. But when you pick a company that is really flourishing, you can make more than 100%. One great example is American International Group, Inc. (NYSE:AIG) which saw its share price drive 197% higher over five years. Unfortunately, though, the stock has dropped 5.6% over a week.

Although American International Group has shed US$2.8b from its market cap this week, let's take a look at its longer term fundamental trends and see if they've driven returns.

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There is no denying that markets are sometimes efficient, but prices do not always reflect underlying business performance. 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.

American International Group's earnings per share are down 0.2% per year, despite strong share price performance over five years.

So it's hard to argue that the earnings per share are the best metric to judge the company, as it may not be optimized for profits at this point. Therefore, it's worth taking a look at other metrics to try to understand the share price movements.

The revenue reduction of 5.7% per year is not a positive. It certainly surprises us that the share price is up, but perhaps a closer examination of the data will yield answers.

The company's revenue and earnings (over time) are depicted in the image below (click to see the exact numbers).

It's good to see that there was some significant insider buying in the last three months. That's a positive. On the other hand, we think the revenue and earnings trends are much more meaningful measures of the business. If you are thinking of buying or selling American International Group stock, you should check out this free report showing analyst profit forecasts .

What About Dividends?

When looking at investment returns, it is important to consider the difference between total shareholder return (TSR) and share price return. 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. So for companies that pay a generous dividend, the TSR is often a lot higher than the share price return. In the case of American International Group, it has a TSR of 238% for the last 5 years. That exceeds its share price return that we previously mentioned. And there's no prize for guessing that the dividend payments largely explain the divergence!

A Different Perspective

It's nice to see that American International Group shareholders have received a total shareholder return of 3.8% over the last year. And that does include the dividend. However, that falls short of the 28% TSR per annum it has made for shareholders, each year, over five years. Potential buyers might understandably feel they've missed the opportunity, but it's always possible business is still firing on all cylinders. It is all well and good that insiders have been buying shares, but we suggest you check here to see what price insiders were buying at.

There are plenty of other companies that have insiders buying up shares. You probably do not want to miss this free list of undervalued small cap companies 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 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.