Einhorn is a major contributor and board member of The Michael J. Fox Foundation. In 2006, Einhorn finished 18th in the World Series of Poker main event and donated his winnings (over $650,000) to the foundation. He is also on the board of the Robin Hood Foundation and a contributor to numerous charities in the New York area. In the Spring of 2009, as promised in his book "Fooling Some of the People All of the Time," Greenlight Capital donated all of the general partner's profits from the shorting of Allied Capital stock (an additional $6 million - Greenlight already donated $1 million in 2005 to Tomorrows Children's Fund - to make a total of $7 million) to three organizations