Markets Glossary
P/E Ratio
Price-to-earnings ratio — the share price divided by earnings per share, showing how many rupees the market pays for each rupee of annual profit.
By Amit Tyagi, Fitoor Capital · AletheiaAI Glossary
Definition
The P/E ratio divides a company's share price by its earnings per share (EPS). A P/E of 30 means the market is paying ₹30 for every ₹1 of annual profit. It is the most widely used shorthand for how expensively a stock is valued relative to its current earnings.
Two variants matter: trailing P/E uses the last twelve months of reported earnings, while forward P/E uses estimated future earnings. A high P/E can mean the market expects strong growth — or that the price has run ahead of the business. A low P/E can mean the stock is cheap — or that the market expects earnings to fall.
India Context
In India, P/E comparisons only make sense within a sector — lenders, commodity producers and consumer companies trade in structurally different ranges, and cyclical stocks often look cheapest on trailing P/E exactly at the peak of their earnings cycle. One-time gains (asset sales, tax write-backs) can also flatter EPS for a year and make the trailing P/E look artificially low, which is why the number should always be read against the actual results filing.
Example
A company trades at ₹500 with trailing EPS of ₹20 — a trailing P/E of 25. If the latest quarter included a one-time gain from a land sale, the “core” EPS may be closer to ₹15, putting the real multiple above 33. Same price, very different valuation story — the difference is in the notes to the results.
Frequently Asked Questions
Is a low P/E always good?
No. A low P/E can signal a genuinely cheap stock, but it can also signal expected earnings decline, governance concerns, or a cyclical earnings peak. The multiple is a starting question, not an answer.
Why do P/E ratios differ so much across sectors?
Because growth rates, capital intensity, and earnings stability differ. Comparing a stock's P/E to its own history and to sector peers is more informative than comparing it to the overall market.
Related Terms
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