Fed plan

US stocks open modestly lower, led by energy sector

KEEPING SCORE: The Dow Jones industrial average lost 141 points, or 0.8 percent, to 16,494 as of 9:50 a.m. Eastern. The Standard & Poor's 500 index fell 14 points, or 0.7 percent, to 1,975 and the Nasdaq composite lost 21 points, or 0.4 percent, to 4,808.