Opec division spurs hedge funds to trim bullish bets on WTI crude oil
Opec's failure to signal it will act over price collapse fuels uncertainty and prompts traders to trim positions before the oil group's meeting

Hedge funds turned less bullish on crude oil as the Organisation of Petroleum Exporting Countries failed to signal it will act to halt the collapse that drove prices to a four-year low.

Long positions sank to an 18-month low. Outstanding futures contracts dwindled to the lowest level in more than two years.
Opec members will meet in Vienna on Thursday to decide on production after oil plunged 30 per cent since June.
Leading producers, including Saudi Arabia, are resisting calls to reduce output while others such as Venezuela seek action to support prices.
Twenty analysts surveyed last week are perfectly divided, with half predicting a cut and the rest no action.