U.S. Stocks Drop, Dow Average Ends Worst May Since 1940

May 28 (Bloomberg) -- Bloomberg's Deborah Kostroun reports on the performance of the U.S. equity market today. U.S. stocks slid, capping the worst May for the Dow Jones Industrial Average since 1940, while the euro slumped and Treasuries rose as a downgrade of Spain's debt rating and escalating tensions on the Korean peninsula triggered a flight from riskier assets. Bloomberg's Pimm Fox also speaks. (Source: Bloomberg)