OilNSE -1.11 % investors piled into short positions as oil markets shook off the disruption from attacks on Saudi Arabian oil facilities.
Bets that West Texas Intermediate crude prices would decline surged 33 per cent, just before prices briefly dipped below pre-attack levels. Money managers are still net long, according to data released Sept. 27 by the US Commodity Futures Trading Commission, but wagers on a rally shrank to below where they were before the Sept. 14 strikes that halted half of Saudi oil output.