Hedge funds may be back in oil: Ex-Shell Oil chief By: CNBC.com News February 03, 2015 at 09:11 AM EST Hedge fund buying may be partly behind the recent rebound in battered oil prices, former Shell Oil President John Hofmeister tells CNBC. Read More >> Related Stocks: Chevron Corp Royal Dutch Shell Cl B ADR iPath Dow Jones-Goldman Sachs Crude Oil Fund