Traders Robert Calkin (L) and Joseph Amabile work in the NASDAQ stock index futures pit at the Chicago Board of Trade in Chicago on March 18, 2009. The Federal Reserve announced Wednesday it will buy up to $300 billion worth of long-term government bonds over the next six months and left a key short-term bank interest rate at a record low of between zero and 0.25 percent. (UPI Photo/Brian Kersey)