John David CampbellJohn D. Campbell became the Director of Private Client Investment at Goldman, Sachs & Co. in 1995. He began his 33-year career at the Firm as a research analyst, eventually becoming a Vice President in the Investment Research Department, a member of he Stock Selection Committee, the Director of Private Client Investment, a Managing Director, and a Partner (Participating Managing Director) in the Investment Management Division. Campbell feels fortunate to be especially qualified to write this book due to his training, professional career, and experience of investing through Vanguard subsequent to retiring fifteen years ago. As a research analyst he studied companies spanning diverse industries and resisted prods to become an industry specialist. Instead, he learned about new industries, businesses, and managements. Read More Read Less