This image was lost some time after publication.

It was another roller coaster of a day on Wall Street. After falling more than 400 points this morning, the Dow rebounded in the last three hours of trading, closing up 552 points, making it the third best single-session point gain in history. (Both the S&P and Nasdaq were up more than 6 percent.) Don't let the momentary boost get your hopes up: The outlook is still pretty bleak, as the hedge fund kings who turned up on Capitol Hill today made clear. And there's always the stream of layoffs to remind us. Dow Jones said today it plans to lay off an unspecified number of employees, the law firm of Orrick Herrington & Sutcliffe let 40 lawyers go, National Geographic cut staff, Entertainment Weekly dismissed 25 staffers, and one in ten employees at Morgan Stanley were given notice today. Any good news? Not really. But Dick Fuld didn't seem too depressed when he was spotted buying some yogurt and granola for breakfast this morning, if that's any consolation.