Shares of government IT security contractor Palantir Technologies ( NYSE:PLTR ) enjoyed a terrific month of February shooting up more than 50% after reporting quarterly sales growth of 20%, and quarterly earnings growth of more than 200%. As a result of this rapid rise in share price, however, the company's stock now sells for a nosebleed 270 times trailing earnings – and even 77 times the earnings it's supposed to earn next year.