U.S. stocks rose, sending the Standard & Poor’s 500 Index to its biggest rally in almost a year, amid speculation the Federal Reserve will act to restore confidence in the markets after yesterday’s rout in equities…“We’ve come down too far, too fast,” Paul Zemsky, the New York-based head of asset allocation for ING Investment Management, said in a telephone interview. His firm oversees $550 billion. “We’re due for a bounce given how oversold we are. We believe the Fed will try to stabilize things and reiterate its commitment to do more if the situation warrants.”