What is P/B Ratio? Best Valuation Tool for Banking Stocks in India
P/B ratio compares stock price to what the company owns minus what it owes.
Price-to-Book (P/B) ratio compares a stock's market price to its book value per share. Book value is total equity (assets minus liabilities) divided by shares outstanding. A P/B of 1 means you are paying exactly what the company's net assets are worth. Below 1 means you pay less than net asset value.
If a company has assets of Rs.10,000 crore, liabilities of Rs.6,000 crore, and 400 crore shares, book value is Rs.10 per share. If the stock trades at Rs.15, P/B is 1.5. You are paying Rs.15 for Rs.10 of book value, the Rs.5 premium is for earning power and growth potential.
P/B Ratio = Market Price per Share / Book Value per Share
If SBI stock price is Rs.750 and Book Value is Rs.500: P/B = 750 / 500 = 1.5x
Why is P/B especially useful for banks?
Banks' assets are primarily financial (loans) rather than physical. Book value closely reflects the actual value of these assets. Earnings can be volatile due to provisioning, but book value is more stable. Indian banking analysts use P/B as the primary valuation tool. A PSU bank at P/B below 1 may be undervalued. A quality private bank at P/B above 3 may be justified by superior ROE.
What does P/B below 1 mean?
The market is valuing the company at less than its net asset value. This could mean genuine undervaluation or hidden problems (bad loans, asset quality issues). For banks, P/B below 1 often signals concerns about asset quality. For non-financial companies, it might mean the assets on the books are overvalued or the company is earning poor returns on those assets.
Analyse banking stocks with P/B data on Stockk Equity. Explore investing in bank ETFs through Stockk ETF for diversified exposure.
Frequently Asked Questions
Is P/B useful for IT companies?
Less useful. IT companies are asset-light, their value lies in human capital and intellectual property, not physical assets. P/B of 10 to 15 is normal for IT because book value is small relative to earning power. Use P/E or EV/EBITDA for IT stocks instead.
What is tangible book value?
Book value minus goodwill and intangible assets. For companies with large acquisitions, tangible book value removes the premium paid. Price-to-tangible book is a more conservative measure. Use StockkAsk at stockk.trade/stockkask to access both book value and tangible book value.
How does P/B relate to ROE?
High ROE companies deserve higher P/B because they generate more profit per rupee of equity. A bank with 18% ROE justifies P/B of 2.5 to 3. A bank with 8% ROE is fairly valued at P/B near 1. The relationship is: justified P/B = (ROE - growth) / (cost of equity - growth).
Can P/B change without stock price moving?
Yes. When book value increases (through retained profits), P/B decreases even if stock price stays flat. When book value decreases (through losses), P/B increases. Both the numerator and denominator move independently.
Should I buy any stock with P/B below 1?
No. P/B below 1 is a necessary but not sufficient condition for value investing. Check why the stock is below book. If the company earns poor returns, destroys value, or has hidden liabilities, book value itself may be overstated. Combine low P/B with improving ROE for genuine value opportunities.
Investments in securities market are subject to market risks. This article is for educational purposes only and does not constitute investment advice.
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