Price-to-Earnings Ratio (P/E)
The P/E ratio measures a company's current share price relative to its earnings per share (EPS).
Concept map
Learn, apply, review
Use case
Used in equity analysis workflows, analysis, and technical interviews.
Judgment check
Useful only when the assumptions and inputs behind the metric are understood.
Deep dive
How to think about Price-to-Earnings Ratio (P/E)
A high P/E may indicate expectations of future growth or that a stock is overvalued. A low P/E could signal undervaluation or declining prospects. The trailing P/E uses past earnings, while forward P/E uses projected earnings. It's most useful when comparing companies within the same industry.
Example: Company A trades at $150/share with EPS of $5. Its P/E ratio is 30x. Competitor B trades at $80/share with EPS of $8, giving a P/E of 10x. This suggests the market expects significantly more growth from Company A.
Rank-ready answer
Definition, example, and interview framing
The P/E ratio measures a company's current share price relative to its earnings per share (EPS).
Company A trades at $150/share with EPS of $5. Its P/E ratio is 30x. Competitor B trades at $80/share with EPS of $8, giving a P/E of 10x. This suggests the market expects significantly more growth from Company A.
In an interview, define Price-to-Earnings Ratio (P/E), explain where it appears in a real finance workflow, then name one assumption or limitation that a reviewer should check.
FAQ
Frequently Asked Questions
What is Price-to-Earnings Ratio (P/E)?
The P/E ratio measures a company's current share price relative to its earnings per share (EPS).
How is Price-to-Earnings Ratio (P/E) used in finance?
A high P/E may indicate expectations of future growth or that a stock is overvalued. A low P/E could signal undervaluation or declining prospects. The trailing P/E uses past earnings, while forward P/E uses projected earnings. It's most useful when comparing companies within the same industry.
Can you give an example of Price-to-Earnings Ratio (P/E)?
Company A trades at $150/share with EPS of $5. Its P/E ratio is 30x. Competitor B trades at $80/share with EPS of $8, giving a P/E of 10x. This suggests the market expects significantly more growth from Company A.