The National Bureau of Economic Research said Monday that the U.S. has been in a recession since December 2007, making official what most Americans have already believed about the state of the economy .
Stocks got hammered Monday, as investors bailed out following confirmation that the U.S. is mired in a recession and indications that it's likely to continue for some time.
The Dow Jones industrial average (INDU) lost 680 points, its fourth-biggest single-session decline on a point basis ever. The decline was 7.7% in percentage terms - the 12th worst percentage one-day decline ever.