P/E Ratio History Chart

How to Read P/E History

A stock's current P/E tells you what the market pays today. Its 7-year P/E range tells you whether that price is cheap or expensive relative to the company's own earnings history. Trading well below the 7-year average often signals a buying opportunity; trading near the 7-year high warrants scrutiny.

Two caveats: cyclical companies can look cheap at peak earnings and expensive at trough earnings — the historical range misleads when the earnings cycle has turned. One-time charges or windfalls also distort trailing EPS temporarily. Always pair historical P/E context with a look at how stock multiples work before drawing conclusions.

A stock's own history is only half the picture — what counts as a “high” P/E depends heavily on the sector. See typical multiples for each industry in the P/E ratio by industry benchmarks, then run the full valuation framework — margin of safety, PEG ratio, and sector context — with the P/E Ratio Calculator.