Redx Pharma Plc (LON:REDX) shareholders might be concerned after seeing the share price drop 14% in the last quarter. But that doesn't displace its brilliant performance over three years. In fact, the share price has taken off in that time, up 655%. As long term investors the recent fall doesn't detract all that much from the longer term story. The thing to consider is whether there is still too much elation around the company's prospects. It really delights us to see such great share price performance for investors.

So let's investigate and see if the longer term performance of the company has been in line with the underlying business' progress.

Check out our latest analysis for Redx Pharma

Redx Pharma isn't currently profitable, so most analysts would look to revenue growth to get an idea of how fast the underlying business is growing. Generally speaking, companies without profits are expected to grow revenue every year, and at a good clip. That's because it's hard to be confident a company will be sustainable if revenue growth is negligible, and it never makes a profit.

Redx Pharma's revenue trended up 69% each year over three years. That's much better than most loss-making companies. In light of this attractive revenue growth, it seems somewhat appropriate that the share price has been rocketing, boasting a gain of 96% per year, over the same period. It's always tempting to take profits after a share price gain like that, but high-growth companies like Redx Pharma can sometimes sustain strong growth for many years. In fact, it might be time to put it on your watchlist, if you're not already familiar with the stock.

The image below shows how earnings and revenue have tracked over time (if you click on the image you can see greater detail).

If you are thinking of buying or selling Redx Pharma stock, you should check out this FREE detailed report on its balance sheet.

A Different Perspective

The last twelve months weren't great for Redx Pharma shares, which performed worse than the market, costing holders 26%. The market shed around 11%, no doubt weighing on the stock price. Investors are up over three years, booking 96% per year, much better than the more recent returns. Sometimes when a good quality long term winner has a weak period, it's turns out to be an opportunity, but you really need to be sure that the quality is there. While it is well worth considering the different impacts that market conditions can have on the share price, there are other factors that are even more important. Case in point: We've spotted 3 warning signs for Redx Pharma you should be aware of, and 1 of them can't be ignored.