DSE Graham Number Calculator

Find the maximum "Fair Price" you should pay for a defensive stock using the legendary formula from Benjamin Graham.

What is the Graham Number?

The Graham Number is a formula used to calculate the Maximum Intrinsic Value of a stock. It was popularized by Benjamin Graham, the father of Value Investing and the mentor of Warren Buffett. The formula is designed to find a price where the company's earnings and its asset value are both reasonably priced.

The Formula

The Graham Number is the square root of (22.5 × EPS × NAVPS).

  • EPS (Earnings Per Share): The company's net profit divided by its total shares.
  • NAVPS (Net Asset Value Per Share): The total assets minus liabilities, divided by total shares.
  • 22.5: This is a constant derived from Graham's belief that a defensive investor should not pay more than a P/E of 15 and a P/B (Price to Book) of 1.5. (15 × 1.5 = 22.5).

How to use it on the DSE?

In the Bangladesh market, where many companies have strong physical assets (Land, Factory) and stable earnings, the Graham Number is a powerful tool to filter out "Overhyped" stocks.

  1. Identify Undervalued Stocks: If the current market price of a DSE stock (e.g., in the Banking or Cement sector) is lower than its Graham Number, it is technically undervalued and provides a Margin of Safety.
  2. Avoid Value Traps: If the Graham Number is very low compared to the price, you might be paying too much for the stock's actual physical and earning capacity.

Limitations to Consider:

While the Graham Number is excellent for "Defensive" companies with tangible assets, it might not be suitable for:

  • Growth Stocks: IT or High-Growth companies often trade at much higher premiums because of their future potential, which isn't captured by the Graham Number.
  • Companies with Negative Earnings: The formula doesn't work if EPS is negative.
  • Financial Institutions: Banks and NBFIs have different asset structures where NAVPS might not reflect their true value as accurately.

Margin of Safety

Benjamin Graham's most important lesson was the "Margin of Safety." By only buying stocks when their price is significantly lower than their Graham Number, you protect your capital against market crashes and errors in your own analysis.

This calculator is part of our comprehensive suite of Bangladesh Stock Market tools. Explore the fullDSE Trading Toolkitto optimize your strategy and manage risk like a professional.

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