September was a tough month for hedge fund across the board. Even well-known fund managers lost big. The average hedge fund lost 3.7 percent in September, approximately 10% higher than August's average loss of 3.4 percent. This performance means the third quarter of 2011 is being called the worst in three years, when the global economy first entered crises. The average hedge fund is now down 5.2% this year, slightly outperforming the market, which has fallen just over 7% in the same period. Here is a sampling of hedge fund losses. The information was pulled from MoneyNews and Barrons: - Pershing Square - Bill Ackman: Lost 5.70% in September, -16% YTD - Maverick Capital - Lee Ainslie: Lost 8% in September, -17% YTD - Omega Advisors- Leon Cooperman: Lost 7.60% in September, -12.3% YTD - JAT Capital Management - John Thaler: Lost 3.20% in September, +31% YTD - SAC Capital Advisors - Steve Cohen: Lost 1.50% in September, +6.5% YTD - Tudor Investment Corp - Paul Tudor Jones: Rose 4.9% in September, +5.45% YTD - Moore Global Investments - Louis Bacon: Rose 2.6% in September, -1.64% YTD