How to calculate the price-to-book (P/B) ratio for investment evaluation?

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How to calculate the PB ratio?

Here’s the PB Ratio formula:

Price-to-Book Ratio = Market Capitalisation / Book Value of Assets

(Where market capitalisation can be calculated by multiplying the market value of a stock by the number of outstanding shares, and the book value of assets can be calculated by deducting the total liabilities of a company from its total assets.)

You can also use another PB Ratio formula:

Price-to-Book Ratio = Market Price per Share / Book Value per Share

(Where market price per share is available online and the book value per share can be calculated by deducting total liabilities from total assets and dividing the result by the number of outstanding shares.)

  • Table of contents
  1. How to calculate the PB ratio?
  2. How to use the PB ratio?
  3. FAQ

How to use the PB ratio?

Now that you know how to calculate the PB ratio , you may be wondering about how to use it for investment analysis. Well, you can gauge whether a stock is valued properly or not by using the Price-to-Book ratio.

The most important thing to remember when using a metric like the Price-to-Book ratio is that you can only use it to compare stocks of companies with similar assets and liabilities or companies that are in the same industry sector.

Here’s how you can interpret the PB ratio:

If PB ratio is equal to 1: A Price-to-Book ratio of one indicates that the stock is trading in line with the book value of the company. Value investors usually do not pick up such stocks since they like to invest based on the growth potential of companies that are undervalued at the time of investment.

If the PB ratio is low: A low PB ratio (usually less than 1) indicates that the stock may be undervalued. Value investors use other metrics to confirm the result and spot the investment opportunity. In certain industry sectors, a PB ratio of less than or equal to 3 may be considered low, whereas anything above 1 may be considered high in other industry sectors. Thus, the actual interpretation of the result depends on the industry sector to which the stock belongs.

If the PB ratio is high: A high PB ratio indicates that the stock may be overvalued. This suggests that it is not the ideal time for investment since a downward correction of the asset value by the market may result in negative returns. Again, the actual value of the PB Ratio that can be considered high for a stock depends on the industry sector.

In conclusion, PB Ratio is a tried and tested method for finding undervalued stocks neglected by the market that can generate potentially reasonable returns. Value investors rely on metrics like these to quickly filter stocks and find the suitable investment opportunities. While the P/B ratio is fast to calculate and easy to use, it has its limitations, such as ignoring the debt burden and intangible assets when calculating the book value of the company. Therefore, it is recommended to confirm the results by using other metrics for investment analysis instead of solely relying on the Price-to-Book ratio.


What does the PB ratio compare?
A. The PB Ratio compares the market value of a stock with its book value. It shows you the value given by the market for each rupee of the net worth of the company.

What are the benefits of using PB ratio?
A. PB ratio is a popular among investors because:

  • It is easy to calculate.
  • It helps make a quick comparison of different stocks within the same industry.
  • It aids in finding undervalued stocks to spot investment opportunities.

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This document should not be treated as endorsement of the views/opinions or as investment advice. This document should not be construed as a research report or a recommendation to buy or sell any security. This document is for information purpose only and should not be construed as a promise on minimum returns or safeguard of capital. This document alone is not sufficient and should not be used for the development or implementation of an investment strategy. The recipient should note and understand that the information provided above may not contain all the material aspects relevant for making an investment decision. Investors are advised to consult their own investment advisor before making any investment decision in light of their risk appetite, investment goals and horizon. This information is subject to change without any prior notice.