U.S. stocks were little changed, with benchmark indexes near record levels, as health-care shares sank to offset gains among energy producers and investors weighed whether the recent rally in equities may have been overdone.
The Nasdaq Biotechnology Index lost 2 percent, led by a slump of 4 percent at Biogen Idec Inc. Energy shares trimmed a weekly decline as oil rallied from a 2010 low. Baker Hughes Inc. extended gains after confirming it is in talks with Halliburton Co. for a potential “business combination.” Amazon Inc. added
