While Euro Weakens on Draghi Comments U.S. stocks fell following a two-day gain amid z earnings and economic data while the euro sank after European Central Bank President Mario Draghi said the currency’s strength could hamper the economic recovery. European shares erased early gains. Treasuries rose. The Standard & Poor’s 500 Index, which last week reached a five-year high, slipped 0.2 percent to close at 1,509.39 at 4 p.m. in New York. The Stoxx Europe 600 Index closed down 0.2 percent after earlier rising 0.6 percent. The euro weakened 0.9 percent to $1.3398 after touching a 14-month high last week. Ten-year Treasury yields lost one basis point to 1.96 percent. The pound strengthened as the future central bank chief discussed exiting unconventional policies. Natural gas led commodities lower. U.S. worker productivity fell more than projected in the fourth quarter as the economy shrank, pushing labor expenses up and showing companies are approaching the limit of how much ef