The major averages ended mixed Wednesday, as stocks pared earlier losses following the Federal Open Market Committee’s policy statement. The Nasdaq led with a 0.5% gain, while the S&P 500 closed fractionally higher. The Dow, dragged down by Coca-Cola (KO) and UnitedHealth Group (UNH), fell 0.2%. Volume was mixed in the stock market today, according to preliminary data. Nasdaq volume fell from Tuesday.