Flaw in P/E Ratio
The flaw with the P/E ratio though is that it ignores a company's future growth, which is often the most important factor in determining its value. Tesla, for example, currently has a P/E ratio around 96, but it's expected to grow revenue by 59% this year, and earnings per share is forecast to jump 79% to $12.11, giving it a more reasonable forward P/E of almost 60.