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Price-to-Earnings (P/E) ratio compares stock price to per-share earnings; high P/E suggests growth expectations, low P/E suggests value.
Formule
Calculate P/E = stock price / earnings per share
- P
- stock price / earnings per share — stock price / earnings per share
- E
- stock price / earnings per share — stock price / earnings per share
Guide étape par étape
- 1Calculate P/E = stock price / earnings per share
- 2Compare to historical average and peers
- 3Assess if valuation reasonable
Exemples résolus
Entrée
Stock $100, EPS $5
Résultat
P/E = 20 (compare to industry average ~18)
Slight premium suggests confidence
Erreurs courantes à éviter
- ✕Using trailing vs. forward P/E inconsistently
- ✕Comparing across industries (P/Es vary)
Questions fréquentes
Is high P/E always bad?
No, justified if earnings expected to grow rapidly.
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