Treasury Secretary Paulson warned his buddies
"Around the conference room table were a dozen or so hedge- fund managers and other Wall Street executives -- at least five of them alumni of Goldman Sachs Group Inc. (GS), of which Paulson was chief executive officer and chairman from 1999 to 2006...At the time Paulson privately addressed the fund managers at Eton Park, he had given the market some positive signals -- and the GSEs’ shares were rallying, with Fannie Mae’s nearly doubling in four days."
That's it Hank, pump it and dump it. Tell your buddies first though, of course.