Protect your money first. Let the returns follow.
Seth Klarman's cult classic on risk-averse value investing. Its starting point is humility: you will be wrong sometimes, so only buy at a price low enough that being wrong still leaves you safe.
The famously out-of-print classic on never confusing a rising price with a sound decision. — On Margin of Safety
for the thoughtful investor
You will be wrong sometimes — so only buy at a price low enough that being wrong still leaves you safe.
Own a business, or bet on the next buyer.
An investor buys a slice of a real business and profits as it succeeds. A speculator buys only because they expect to sell higher to someone else. An investor can still sell quickly — but the case always rests on what the business is worth, never on hoping the crowd will pay more.
Buy well below what it's worth.
Investing is a game of uncertainty, and even great investors get their estimates wrong. The remedy is to buy at a price far enough below intrinsic value that mistakes and bad luck are absorbed by the discount — not by your capital. The deeper the discount, the more room you have to be wrong and still come out whole.
Rule one: don't lose money.
Klarman puts capital preservation before everything else, because the maths of loss is merciless. A fall takes a far larger gain just to climb back to where you started — so avoiding a permanent loss matters more than catching the next winner. Survive first; compounding can only work on money you still have.
Beating the market while losing money is still losing.
Many managers chase relative performance — “down only 5% while the market fell 10%.” But you can beat the benchmark and still end the year poorer than you began. Klarman argues for absolute returns: judge yourself by real money kept and grown, not by a ranking against a crowd that may itself be losing.
The crowd manufactures overpriced assets.
The pressure to keep up pushes investors to copy one another and crowd into the same popular names, inflating their prices and quietly removing the very edge everyone was chasing. Investment fashions always come to an end. The patient contrarian, willing to look wrong for a while, is the one who gets paid for waiting.
Knowing the rule is easy. Living it is hard.
Two real difficulties remain. First, deciding how large a margin to demand — a fixed discount you always apply, or one you tune to each company's risk. Second, the discipline to wait, sometimes for a long time, without caving in and buying at inflated prices just to feel like you're doing something.
Demand a discount before you act.
Never confuse a rising price with a sound decision. Decide what a thing is worth, insist on paying meaningfully less, and let patience — not excitement — set the pace.
Summarised in my own words from Seth A. Klarman's Margin of Safety. The diagrams are original illustrations of the book's ideas.