Oil traders have ramped up their bets in the futures and options market that April’s rally will run out of steam, as the outlook for demand weakens and with few clear signs of an end in sight to a supply glut. While prices for front-month delivery Brent crude futures rallied by as much as 20 percent this month, sparking hopes of an end to a rout that had previously pulled the market down by as much as 70 percent since 2014, data for contracts for later delivery looks much weaker. The spread between Brent for delivery in December 2017 and those for delivery next month has halved since March 1 to just $4.40 per barrel, and in some cases even wiping out the contango, a price curve where contracts are more expensive going forward than for […]