Bruce Corman Norbert Greenwald OP, (born 1946), is a professor at Columbia University's Graduate School of Business and Director of Research at FirstEagle Funds. He is, among others, the author of the books Value Investing: from Graham to Buffett and Beyond and Competition Demystified: A Radically Simplified Approach to Business Strategy. He has been referred to by The New York Times as "a guru to Wall Street's gurus," and is a recognized authority on value investing, along with additional expertise in productivity and the economics of information.

He and his wife, Ava Seave (see Quantum Media), have a daughter and live in Manhattan.

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