Every investor on earth makes bad calls sometimes. But really big losses can really drag down an overall portfolio. So consider, for a moment, the misfortune of VIB Vermögen AG (ETR:VIH1) investors who have held the stock for three years as it declined a whopping 83%. That'd be enough to cause even the strongest minds some disquiet. And the ride hasn't got any smoother in recent times over the last year, with the price 40% lower in that time. The falls have accelerated recently, with the share price down 17% in the last three months. We really feel for shareholders in this scenario. It's a good reminder of the importance of diversification, and it's worth keeping in mind there's more to life than money, anyway.

Now let's have a look at the company's fundamentals, and see if the long term shareholder return has matched the performance of the underlying business.

Check out our latest analysis for VIB Vermögen

To paraphrase Benjamin Graham: Over the short term the market is a voting machine, but over the long term it's a weighing machine. By comparing earnings per share (EPS) and share price changes over time, we can get a feel for how investor attitudes to a company have morphed over time.

Although the share price is down over three years, VIB Vermögen actually managed to grow EPS by 11% per year in that time. Given the share price reaction, one might suspect that EPS is not a good guide to the business performance during the period (perhaps due to a one-off loss or gain). Alternatively, growth expectations may have been unreasonable in the past.

Since the change in EPS doesn't seem to correlate with the change in share price, it's worth taking a look at other metrics.

The modest 0.5% dividend yield is unlikely to be guiding the market view of the stock. With revenue flat over three years, it seems unlikely that the share price is reflecting the top line. We're not entirely sure why the share price is dropped, but it does seem likely investors have become less optimistic about the business.

You can see below how earnings and revenue have changed over time (discover the exact values by clicking on the image).

This free interactive report on VIB Vermögen's balance sheet strength is a great place to start, if you want to investigate the stock further.

A Different Perspective

While the broader market gained around 16% in the last year, VIB Vermögen shareholders lost 40% (even including dividends). Even the share prices of good stocks drop sometimes, but we want to see improvements in the fundamental metrics of a business, before getting too interested. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 11% per year over five years. We realise that Baron Rothschild has said investors should "buy when there is blood on the streets", but we caution that investors should first be sure they are buying a high quality business. 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 VIB Vermögen is showing 3 warning signs in our investment analysis , and 2 of those don't sit too well with us...

We will like VIB Vermögen better if we see some big insider buys. While we wait, check out this free list of undervalued stocks (mostly small caps) with considerable, recent, insider buying.

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