Which investor wrote the 1934 book Security Analysis with David Dodd?

Benjamin Graham wrote the 1934 book Security Analysis with David Dodd.

Graham and Dodd’s book helped establish a systematic approach to analyzing securities through financial statements, valuation, and a margin of safety. Graham later wrote The Intelligent Investor, first published in 1949, which introduced value-investing ideas to a broad audience. He taught at Columbia Business School, where Warren Buffett was one of his students.

Graham’s approach emphasized distinguishing an investment from speculation, considering a company’s underlying business value, and demanding a cushion against analytical errors. The term “margin of safety” became especially associated with his work. Graham did not claim that investors could eliminate uncertainty; instead, he argued that disciplined valuation and diversification could improve the odds of acceptable results. Security Analysis was co-authored with David Dodd, so Graham is not its sole author.