P/E
P/E = Price / EPS
P/E (Price to Earnings)
What the market pays today for one rupee of last year's profit.
P/E = Price ÷ (Net Income ÷ Diluted Shares Outstanding)
P/E divides the share price by earnings per share. If a share costs ₹300 and the company earned ₹15 per share, the P/E is 20 — buyers are paying twenty rupees for each rupee of annual profit.
A high P/E is not automatically 'expensive' and a low one is not automatically 'cheap'. A high number can mean the market expects profits to grow, or that the last year's profit was unusually low. A low number can mean the market expects profits to fall. P/E on its own says nothing about whether a price is justified — it is a starting question, not an answer.
P/E is undefined when a company made a loss, because dividing by a negative or zero profit produces a figure that cannot be read the normal way. StockProof shows N/A rather than a negative P/E.
In StockProof StockProof computes this from the latest cached price and the net income and diluted share count in the most recent filing on file. The historical P/E chart uses a different basis — filed annual EPS against an adjusted closing price — so the two figures are not directly comparable and are never differenced.
Introduction to the price-to-earnings ratio ↗ Khan Academy — external link, not StockProof content
P/E = Price / (ProfitOrLossAttributableToOwnersOfParent / shares implied by reported Diluted EPS) → ₹617.60 / (₹2,779,100,000 / 158,715,020 shares) = ₹617.60 / ₹17.51 EPS