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Margin of Safety

Seth A. Klarman · 1991

A bargain needs room for being wrong.

Big Idea

Klarman argues for disciplined purchases below estimated underlying value, with protection against loss central to the decision.

Price Is Not Value

A market quotation and an estimate of what an investment is worth are different things.

Room for Error

A discount matters because valuations and future outcomes can be wrong.

Discipline Over Fashion

The approach can require standing apart from a popular market story.

Patience Has a Cost

Value-oriented investors can lag a rising market for long periods.

Risk Comes First

The book frames investing around avoiding serious loss rather than chasing instant wealth.

Estimates Remain Uncertain

Calling something undervalued does not prove that its price will recover or that the analysis is correct.

Khizooo Take

Ask which assumptions support an estimated bargain and what happens if those assumptions fail.

  • Educational book ideas, not personalized financial advice or promised returns.

Remember

A low price is useful only relative to a sound estimate of value.

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Why this book matters

Klarman argues for disciplined purchases below estimated underlying value, with protection against loss central to the decision.

About this Notooo

Examine Klarman’s value-investing philosophy of price versus value, patience, discipline, and allowing room for uncertain estimates.

A khizooo-curated one-page synthesis created with AI-assisted research. It captures useful ideas, not the complete book.
Notooo is not a replacement for reading the original book.