Should I read the 1972 or 2003 edition of The Intelligent Investor?
In one paragraph
The 2003 edition with Jason Zweig's commentary. Graham's original text is identical in both; the 2003 edition adds Zweig's after-chapter notes that translate Graham's 1949–1972 examples into modern markets, and they're roughly half the book's actual value today.
What this actually means
Graham's last revision was 1973, published shortly before he died. Every edition since is the same Graham text — what changes is the editorial wrapper.
The 2003 edition (Harper Business, blue cover) adds Jason Zweig's commentary after each chapter. Zweig is a longtime Wall Street Journal columnist and a careful Graham scholar. His notes pull in the dotcom bubble, Enron, and Long-Term Capital Management — all examples that would have been caught by Graham's framework, and all easier to relate to than Graham's railroad and steel-company examples from the 1940s.
The 1972 edition (no Zweig) is fine if you already know modern market history well enough to map Graham's examples yourself. Most readers don't, and slog through the dated examples without getting the payoff.
There's also a 2024 'definitive' edition floating around with updated Zweig commentary — it's fine, but the 2003 version is the one referenced in every Buffett interview and Bogleheads thread for the last 20 years. Buy the 2003. $15 used on most reseller sites.
Whatever edition: chapters 8 and 20 are the load-bearing ones. The rest is context.
