Rubenstein, Mark (1944– )

US educator and financier. He is a Harvard-educated professor of finance at the University of California, Berkeley, where he and two colleagues devised the investment technique of ‘portfolio insurance’, and formed a firm, LOR, to market the strategy in 1981. The technique was partly successful in limiting damage during the Stock Market crash of 1987. His publications include Options Markets (1985, with John C Cox), Rubenstein on Derivatives (1999), and A History of the Theory of Investments (2006), as well as many contributions to leading financial and economic journals.