Stocks drifted mostly lower Friday with a little more than one hour left in the session, with medical stocks leading the way down. Volume in the stock market today was running lighter than Thursday’s levels. The Nasdaq rose less than 0.1%, the S&P 500 lost 0.1%, and the Dow Jones industrial average dropped 0.2%. Chinese Internet and gaming services provider NetEase (NTES) rose 3% in strong trade to an all-time high.