Synthomer (LON:SYNT) investors are sitting on a loss of 81% if they invested five years ago

Long term investing is the way to go, but that doesn't mean you should hold every stock forever. We really hate to see fellow investors lose their hard-earned money. Imagine if you held Synthomer plc (LON:SYNT) for half a decade as the share price tanked 85%. And we doubt long term believers are the only worried holders, since the stock price has declined 66% over the last twelve months. Shareholders have had an even rougher run lately, with the share price down 30% in the last 90 days. We really hope anyone holding through that price crash has a diversified portfolio. Even when you lose money, you don't have to lose the lesson.

Since shareholders are down over the longer term, lets look at the underlying fundamentals over the that time and see if they've been consistent with returns.

Check out our latest analysis for Synthomer

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 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.

In the last half decade Synthomer saw its share price fall as its EPS declined below zero. This was, in part, due to extraordinary items impacting earnings. Since the company has fallen to a loss making position, it's hard to compare the change in EPS with the share price change. But we would generally expect a lower price, given the situation.

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

We consider it positive that insiders have made significant purchases in the last year. Even so, future earnings will be far more important to whether current shareholders make money. Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here..

We'd be remiss not to mention the difference between Synthomer's total shareholder return (TSR) and its 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. Dividends have been really beneficial for Synthomer shareholders, and that cash payout explains why its total shareholder loss of 81%, over the last 5 years, isn't as bad as the share price return.

While the broader market gained around 3.1% in the last year, Synthomer shareholders lost 66%. However, keep in mind that even the best stocks will sometimes underperform the market over a twelve month period. Unfortunately, last year's performance may indicate unresolved challenges, given that it was worse than the annualised loss of 13% over the last half decade. 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. Like risks, for instance. Every company has them, and we've spotted 2 warning signs for Synthomer (of which 1 is a bit concerning!) you should know about.

Synthomer is not the only stock insiders are buying. So take a peek at this free list of growing companies with insider buying.

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

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

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