CNBC | Oil volatility dampens stocks; Novozymes tanks 11.5% CNBC Elsewhere, OPEC upgraded its forecast for oil demand growth in 2016 on Wednesday, in a report that may dampen hopes for a production freeze after the group meets next month. Brent crude and U.S. WTI both managed to eke out gains in later trade, ... European Stocks Drift Lower As Oil Shares Wade In The Red |