Jaffray Piers Woodriff (born April 8, 1969, in Virginia) is the co-founder and CEO of Quantitative Investment Management (QIM), a $1 billion hedge fund. Woodriff founded QIM with Michael Geismar and Greyson Williams [1] in 2003.[2] Woodriff attended the University of Virginia from 1987 to 1991.[3]
QIM is run out of Woodriff's hometown of Charlottesville, Virginia. Woodriff uses a "Black Box" statistical approach to making investing decisions.
Forbes listed Woodriff as one of the highest-paid fund managers in 2011.[4] In 2012 Jack Schwager's book "Hedge Fund Market Wizards" profiled Woodriff as one of the top hedge fund managers in the world at that time. Woodriff has been critical of stock market structure exploited by high-frequency trading on his Twitter account.[citation needed]