Diamondback Capital Management

Address: as of Dec. 31, 2006

Portfolio Holdings for Address:

Address: holds 2 positions in its portfolio as reported in the December 2006 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
D Achillion Pharmaceuticals Inc. Common Stock 0 0.0 $1.2M 77k 16.11
D Activision 0.0 $0 4.9M 0.00