By Steve Gelsi
NEW YORK (MarketWatch) -- Natural gas producer Southwestern Energy SWN -4.33% dropped 3.5%, as energy stocks moved into the red Friday after a weaker-than-expected U.S. monthly jobs report. Also moving lower, oil service firm Helmerich & Payne HP -2.98% dropped 2.2% and Noble Corp. NE -2.14% fell back by 2.1%. Power generator AES Corp. AES +2.70% rose 2.4%. Energy stocks contained in the S&P 500 Index fell 1.2%, on average.
