U.S. stocks ended Friday's session lower as a crude oil selloff pressured the energy sector and nerves over next week's Federal Reserve meeting peaked. Trading was slightly more erratic during the quadruple-witching session. Crude oil tumbled after the latest data showed the number of active oil rigs in the U.S. climbed over the past week. The rig count has increased in eleven of the past 12 weeks, according to Baker Hughes.  LionsGate (LGF) climbed on highs hopes for its Blair Witch sequel. The low-budget reboot is expected to pull in four times its production cost in its weekend debut. The original film is one of the most successful independent films ever. Abbott Laboratories (ABT - Get Report) climbed after agreeing to sell its Abbott Medical Optics subsidiary to Johnson & Johnson. The deal is expected to close in the first quarter of next year.