The five-year shareholder returns and company earnings persist lower as Tullow Oil (LON:TLW) stock falls a further 10% in past week

Some stocks are best avoided. It hits us in the gut when we see fellow investors suffer a loss. Imagine if you held Tullow Oil plc (LON:TLW) for half a decade as the share price tanked 85%. We also note that the stock has performed poorly over the last year, with the share price down 33%. Shareholders have had an even rougher run lately, with the share price down 22% 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.

Given the past week has been tough on shareholders, let's investigate the fundamentals and see what we can learn.

View our latest analysis for Tullow Oil

While markets are a powerful pricing mechanism, share prices reflect investor sentiment, not just underlying business performance. 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.

Tullow Oil became profitable within the last five years. Most would consider that to be a good thing, so it's counter-intuitive to see the share price declining. Other metrics may better explain the share price move.

In contrast to the share price, revenue has actually increased by 0.4% a year in the five year period. A more detailed examination of the revenue and earnings may or may not explain why the share price languishes; there could be an opportunity.

You can see how earnings and revenue have changed over time in the image below (click on the chart to see the exact values).

It's probably worth noting we've seen significant insider buying in the last quarter, which we consider a positive. On the other hand, we think the revenue and earnings trends are much more meaningful measures of the business. This free report showing analyst forecasts should help you form a view on Tullow Oil

A Different Perspective

Investors in Tullow Oil had a tough year, with a total loss of 33%, against a market gain of about 13%. However, keep in mind that even the best stocks will sometimes underperform the market over a twelve month period. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 13% 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 Tullow Oil is showing 3 warning signs in our investment analysis , and 2 of those are a bit concerning...

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 British 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.