Definition: Intrinsic Value vs. Market Value
Every stock has two prices. The market price is what you see on your brokerage screen — it changes every second based on what buyers and sellers are willing to exchange. The intrinsic value is an estimate of what the stock is actually worth based on the company's underlying business.
Benjamin Graham, the father of value investing, drew a clear distinction: "In the short run, the market is a voting machine, but in the long run, it is a weighing machine." The voting machine is driven by emotion, narrative, and momentum. The weighing machine eventually prices stocks based on the cash they generate.
Intrinsic value is the weighing machine's answer.
The formal definition: intrinsic value is the present value of all future cash flows a business will generate, discounted back to today at an appropriate rate. If a company will generate $100 million in free cash flow every year for the next 20 years, and your required return is 10%, the intrinsic value is the sum of those discounted cash flows.
Why Intrinsic Value Matters
Without an estimate of intrinsic value, investing becomes speculation. You're buying a stock because you think someone else will pay more for it later — the "greater fool" theory. That works until it doesn't.
With an intrinsic value estimate, you can make rational decisions:
- Buy when the market price is significantly below intrinsic value (positive margin of safety)
- Hold when the market price is near intrinsic value and the business is healthy
- Sell when the market price rises far above intrinsic value or the business fundamentals deteriorate
This framework removes emotion from the equation. When a stock drops 30% and everyone is panicking, you can ask: "Has the intrinsic value changed, or just the market price?" If the business is still generating the same cash flows, the drop is an opportunity, not a reason to sell.
How to Calculate Intrinsic Value
The most widely used method is the Discounted Cash Flow (DCF) model. Here's the conceptual framework:
Step 1: Estimate Future Cash Flows
Pull the company's free cash flow history from SEC filings (we use EDGAR). Calculate the historical growth rate. Project future cash flows based on this rate, with a conservative cap.
Step 2: Choose a Discount Rate
The discount rate reflects the risk of the investment — your required return. Most analysts use the Weighted Average Cost of Capital (WACC). Higher risk companies get a higher discount rate, which reduces the present value of their future cash flows.
Step 3: Calculate Terminal Value
You can't project cash flows forever. After the projection period (typically 10 years), estimate a terminal value using a perpetuity growth model — assuming the company grows at a modest, sustainable rate (usually 2-3%, roughly GDP growth) forever.
Step 4: Discount Everything Back
Sum the present value of all projected cash flows plus the terminal value. Divide by shares outstanding. That's your per-share intrinsic value estimate.
On FairValueLabs, we do this calculation automatically for every stock using data from SEC EDGAR. You can see the full breakdown on each ticker analysis page.
Margin of Safety
Intrinsic value calculations are never exact. You're making assumptions about the future — growth rates, discount rates, terminal values — and small changes in these assumptions can swing the result significantly.
That's why Graham and Buffett insist on a margin of safety: only buy when the market price is significantly below your intrinsic value estimate. This buffer protects you against errors in your assumptions.
- Graham recommended at least 33% margin of safety
- Buffett typically looks for 25% or more
- We flag stocks with margin of safety above 10% as potentially undervalued
The required margin should increase with uncertainty. A stable utility company with predictable cash flows might justify a 15% margin. A cyclical tech company with volatile earnings needs 30%+.
Read our full Margin of Safety Guide for a deeper dive.
Limitations and Common Mistakes
The DCF Is Only as Good as Its Inputs
Garbage in, garbage out. If you assume 20% growth for a company that's historically grown at 5%, your intrinsic value will be wildly inflated. We use conservative inputs (historical averages, not analyst estimates) specifically to avoid this trap.
Not All Cash Flows Are Created Equal
A dollar of free cash flow from a wide-moat company is worth more than a dollar from a no-moat company, because the wide-moat company is more likely to sustain or grow that cash flow. This is why we pair the DCF with our moat rating — intrinsic value is more reliable when the competitive advantage is durable.
Price-Based Metrics Are Not Intrinsic Value
P/E ratio, P/B ratio, and dividend yield are shortcuts, not intrinsic value. A stock with a low P/E can still be overvalued if earnings are about to collapse. A stock with a high P/E can be undervalued if earnings are about to surge. Only a cash-flow-based model captures the full picture.
The Market Can Stay Irrational Longer Than You Can Stay Solvent
Even if your intrinsic value estimate is correct, the market may take years to recognize it. Value investing requires patience and the conviction to hold through extended periods of underperformance. This is the psychological cost of the approach — and why most investors can't do it consistently.