U.S.tocks lost earlier gains to fall into the red after another selloff in crude oil prices pressured the energy sector. Crude was trading at around $32 a barrel. FitBit (FIT) extended its losing streak into a new week. Shares have fallen nearly 40% since the beginning of the year as the wearables company prepares to enter the high-end smartwatch market currently dominated by Apple (AAPL). 'Star Wars: The Force Awakens' smashed new records after it logged the best Saturday opening day in history in China. The Disney (DIS) film is expected to gross at least $200 million in China by the end of its run. After six months of negotiations and offers, drugmaker Shire (SHPG) has sealed the deal to buy Baxalta (BXLT) for $32 billion. TheStreet's Keris Lahiff reports from Wall Street.