NEW YORK — U.S. stock indexes nestled a hair lower on Friday after the falling price of oil weighed on energy companies, but the S&P 500 nevertheless closed out its third straight winning week following a brutal stretch in December. It was a day full of broken streaks — oil fell for the first time in two weeks, and the yield on the 10-year Treasury note sank to its first loss in more than a week — but the market remained calm through it.