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Margin of Safety

beginner
7 min read
Updated 2026-07-13
Reviewed by SST Editorial
Margin of Safety is a core value investing principle popularized by Benjamin Graham. It represents the difference between a stock's calculated intrinsic value and its current market price. For example, if a stock has an intrinsic value of $100 and trades at $70, it has a 30% margin of safety. This buffer protects investors from losses if their valuation assumptions prove to be too optimistic, or if the company encounters unexpected problems.

Key Takeaways

  • 01.The difference between intrinsic value and market price (Buying Price < Intrinsic Value).
  • 02.Acts as a buffer against valuation mistakes, human error, or bad luck.
  • 03.The core risk management tool in value investing.
  • 04.A larger margin of safety reduces risk while increasing potential returns.

Why it matters

The future is uncertain, and financial models are based on estimates. The Margin of Safety is a buffer that acknowledges this uncertainty. It allows investors to be wrong in their assumptions and still avoid losing capital.

When it matters

It is critical during market bubbles or when buying cyclical businesses where future cash flows are hard to project.

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Visual Reference: diagram

Visualizing the discount zone between Intrinsic Value and Market Price as a safety buffer.

Interactive Tool: widget

Input current price and intrinsic value to calculate your Margin of Safety buffer.

Common Mistakes

Reducing the margin of safety for growth stocks

Investors often argue that high-growth companies do not need a margin of safety because growth will bail them out. In reality, growth is unpredictable, and growth stocks require an *even larger* margin of safety to protect against multiple contraction.

๐Ÿ“– Real-World Example: Graham's safety buffer in action

An investor calculated a manufacturing company's liquidation value (net current assets) at $10 per share. The stock fell to $6 due to a temporary sector slowdown. Buying at $6 provided a 40% margin of safety backed by hard liquid assets. When the sector recovered, the price returned to $10, generating a 66% return with minimal downside risk.

Further Reading