Determine fair stock value using Graham's proven valuation formula
$
Enter the company's annual earnings per share (e.g., $2.50)
%
Enter the expected annual earnings growth rate as a percentage (e.g., 12%)
Intrinsic Value Per Share—
Formula Breakdown—
What does this mean? The Intrinsic Value Per Share represents the theoretical fair value of the stock based on Benjamin Graham's formula, which considers current earnings and expected growth. Compare this calculated value to the current market price: if the market price is below the intrinsic value, the stock may be undervalued; if above, it may be overvalued. The Formula Breakdown shows how the calculation was derived using Graham's methodology.
Understanding Stock Intrinsic Value
The intrinsic value of a stock represents its true underlying worth based on fundamental analysis rather than market sentiment or price fluctuations. Benjamin Graham, the father of value investing, developed a simple yet effective formula to calculate intrinsic value using just two key metrics: earnings per share and expected growth rate. This calculator applies Graham's proven methodology to help investors identify whether a stock is trading at a fair price.
How Graham's Valuation Formula Works
Benjamin Graham's intrinsic value formula is expressed as: Intrinsic Value = EPS × (8.5 + 2g) × 4.4 / Y, where EPS is earnings per share, g is the expected annual growth rate (as a percentage), 4.4 is the average yield of AAA corporate bonds, and Y is the current yield of AAA bonds. The simplified version used in this calculator focuses on the core components: multiplying the EPS by a factor that accounts for both the base valuation multiple and the growth rate. This formula assumes a reasonable relationship between a company's earnings growth and its valuation multiple. The constants in the formula reflect Graham's view that a stock with zero growth should trade at a multiple of 8.5 times earnings, with additional valuation added based on expected growth.
Interpreting Your Results
Once you calculate the intrinsic value, compare it directly to the current market price of the stock. If the market price is significantly lower than the calculated intrinsic value, the stock may represent a value opportunity for investors seeking margin of safety. Conversely, if the market price exceeds the intrinsic value substantially, the stock may be overvalued or priced in unrealistic growth expectations. Graham emphasized the importance of a margin of safety—buying stocks at a discount to their intrinsic value to protect against calculation errors or unexpected business deterioration. Most value investors using this method look for stocks trading at least 20-30% below calculated intrinsic value before considering them attractive investments.
Key Inputs Explained
Earnings Per Share (EPS) represents the company's net income divided by the number of outstanding shares. This metric is reported in a company's financial statements and indicates how much profit is attributable to each share. A higher EPS generally suggests stronger profitability on a per-share basis. The Expected Annual Growth Rate should represent your realistic estimate of how much the company's earnings will grow annually over the next 5-10 years. This figure significantly impacts valuation—even small changes in the growth rate assumption can dramatically alter the calculated intrinsic value. Conservative investors typically use lower growth rate estimates, while more aggressive investors may use higher projections based on company fundamentals and industry trends.
Limitations and Considerations
While Graham's formula provides a useful valuation framework, it has important limitations. The formula assumes stable, predictable growth, which may not reflect reality for companies in transition, cyclical industries, or experiencing disruption. The calculated intrinsic value is only as good as your growth rate assumption—if the projected growth rate is significantly off, the result will be misleading. Additionally, the formula doesn't account for factors like competitive advantage, management quality, balance sheet strength, or market conditions. It's best used as one tool among many in a comprehensive investment analysis process. Always conduct additional due diligence and consider consulting with a financial advisor before making investment decisions based solely on this calculation.
Practical Application in Investment Strategy
Successful value investors like Warren Buffett have built substantial wealth using Graham's principles of calculating intrinsic value and investing with a margin of safety. To use this calculator effectively, gather current EPS data from financial statements or reliable investment websites, develop a realistic growth rate estimate based on historical performance and industry outlook, calculate the intrinsic value, and then compare it to the current market price. Document your assumptions and revisit them periodically as company performance and market conditions change. Consider creating a range of intrinsic values using conservative, moderate, and optimistic growth rate scenarios to understand how sensitive your valuation is to growth assumptions. This disciplined approach helps investors avoid emotional decision-making and maintain focus on long-term value creation.
What is the difference between intrinsic value and market price?
Intrinsic value is the calculated true worth of a stock based on fundamental analysis and earnings potential, while market price is what investors are actually willing to pay for the stock at any given moment. Market price is driven by supply, demand, sentiment, and news, and can diverge significantly from intrinsic value. Value investors use this difference to identify opportunities when market prices fall below calculated intrinsic values.
How accurate is Graham's valuation formula?
Graham's formula provides a useful framework for valuation but is not perfectly accurate for all situations. Its accuracy depends heavily on the accuracy of your EPS and growth rate inputs. The formula works best for stable, mature companies with predictable earnings growth. It may be less reliable for high-growth technology companies, startups, or businesses in transition. Use it as one analytical tool combined with other fundamental analysis methods.
What growth rate should I use in the calculator?
The growth rate should represent your realistic estimate of the company's earnings growth over the next 5-10 years. Consider the company's historical growth, industry trends, competitive position, and economic conditions. Conservative investors often use lower rates (5-8%), while more optimistic projections might reach 12-15%. Many professionals use growth rates that don't exceed long-term GDP growth rates (typically 3-5%) for mature economies to remain realistic.
Is intrinsic value the same for all investors?
No, intrinsic value can vary between investors based on different assumptions about growth rates, risk tolerance, and expected returns. Two investors analyzing the same stock might arrive at different intrinsic values if they use different growth rate estimates or have different perspectives on the company's future. This is why it's important to document your assumptions and understand how sensitive your valuation is to changes in key inputs.
What is a margin of safety and why is it important?
The margin of safety is the difference between a stock's intrinsic value and the price you pay for it. Graham advocated buying stocks only when they trade at a meaningful discount (often 20-30% or more) to intrinsic value. This safety margin protects you if your calculations are wrong, if the company underperforms expectations, or if market conditions deteriorate. It's a fundamental principle of value investing that helps reduce investment risk.