It's nice to see that WSP Global shareholders have received a total shareholder return of 2.7% over the last year. That's including the dividend. Having said that, the five-year TSR of 28% a year, is even better. Potential buyers might understandably feel they've missed the opportunity, but it's always possible business is still firing on all cylinders. 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. Take risks, for example - WSP Global has 1 warning sign we think you should be aware of.