David LeFevre Dodd (August 23, 1895 – September 18, 1988) was an American educator, financial analyst, author, economist, professional investor, and in his student years, a protégé of, and as a postgraduate, close colleague of Benjamin Graham at Columbia Business School.The Wall Street Crash of 1929 (Black Thursday) almost wiped out Graham, who had started teaching the year before at his alma mater, Columbia. The crash inspired Graham to search for a more conservative, safer way to invest.