today's yahoo finance and Street.com article
If you read that news you'd go to General Molly (GMO) Coghill Capital Mgt LLC BO 505,200 $1,595,080 Notice it was Coghill Capital who sold 505,200 shares. Did they sell August 9th?In any case, the stock has been going up nicely. The selling must have finished.
Coghill is NOT the chairman. That article points to the Chairman of Rackspace, not GMO. Please get your facts straight.