Cover of The Intelligent Investor

Finance

The Intelligent Investor

by Benjamin Graham

How do you invest and stay calm?

Benjamin Graham taught Warren Buffett, and wrote this book in 1949 for ordinary people with savings. He thought an investor's worst enemy was usually himself. So the book is mostly about avoiding big mistakes and keeping your head when prices go mad.

Hear a sample · read by Laura

0:32

What you'll learn

  • Investing or speculating?
  • Meet Mr. Market
  • Margin of safety
  • Defensive or enterprising

The key ideas in The Intelligent Investor

Investing or speculating?

Graham defines an investment as something that, after thorough analysis, promises safety of your money and an adequate return. Anything else is speculation. He doesn't ban speculating. He wants you to know when you're doing it, and to keep it in a small, separate pot.

Meet Mr. Market

Imagine you own part of a business with a partner called Mr. Market. Every day he offers to buy your share or sell you his, at a price that swings with his mood. You never have to accept. Take advantage of his silly prices and ignore the rest.

Margin of safety

Graham's last chapter sums up sound investing in three words, margin of safety. Pay so far below what a business is worth that you'll still be fine if your estimate turns out wrong or your luck turns bad.

Defensive or enterprising

Graham sorts investors by how much work they'll do. The defensive investor wants safety with little effort, holding good bonds and big, sound companies, with shares never below a quarter or above three quarters. The enterprising investor does the digging and hunts for bargains.

Lines worth underlining

  1. Investing

    Graham's investor studies a business first and puts safety before profit. Buying on a hunch is speculating.

  2. Keep it simple

    If you don't want to spend hours on it, hold a plain mix of solid stocks and bonds.

  3. Paying too much

    A great company can still be a poor buy if you pay too much for it.

  4. Mr. Market

    Picture the market as a moody partner quoting prices every day. You can ignore him, or buy when he panics.

  5. Your worst enemy

    Most investors hurt themselves more than the market does, by acting on fear and excitement.

A story from the book

One lucky break

In a postscript, Graham tells how his partnership put about a fifth of its money into half of one growing company in 1948. That move made more than all their other decisions in twenty years. One lucky break, he says, can outweigh a lifetime's work, if you're prepared.

One thing to try

Write your split down

Before prices next lurch, write down your split between shares and bonds, somewhere between Graham's quarter and three quarters. Add one rule for when you'll rebalance back to it. When markets go wild, follow the note instead of the news.

There's more to The Intelligent Investor

Knotd has the key ideas from 250+ non-fiction books, each in a few minutes, in plain words. The Intelligent Investor comes with a Your Move story to make it stick.

Get the whole book on KnotdOpen in the app

Questions about The Intelligent Investor

What is The Intelligent Investor about?

How do you invest and stay calm? Benjamin Graham taught Warren Buffett, and wrote this book in 1949 for ordinary people with savings. He thought an investor's worst enemy was usually himself. So the book is mostly about avoiding big mistakes and keeping your head when prices go mad.

What are the key ideas in The Intelligent Investor?

Investing or speculating?; Meet Mr. Market; Margin of safety; Defensive or enterprising.

What's one thing to try from The Intelligent Investor?

Before prices next lurch, write down your split between shares and bonds, somewhere between Graham's quarter and three quarters. Add one rule for when you'll rebalance back to it. When markets go wild, follow the note instead of the news.

Is The Intelligent Investor on Knotd?

Yes. Knotd has the key ideas from The Intelligent Investor in a few minutes, in plain words, plus a Your Move story to test them. It's one of 250+ non-fiction books in the app.