Brent crude slumped to a new five-year low as OPEC’s decision last month to maintain output at a time of oversupply prompted a growing number of banks to cut price forecasts. West Texas Intermediate also slumped. Futures dropped as much as 2.5 percent in London and 1.9 percent in New York . Morgan Stanley lowered its 2015 estimate by 29 percent in a report on Dec. 5, citing a decision by the Organization of Petroleum Exporting Countries not to lower a 30 million-barrel-a-day output target. Banks including BNP Paribas SA, Credit Suisse Group AG, UBS Group AG and Barclays Plc have also cut since the 12-nation group’s Nov. 27 meeting. “The major forecasters continue to cut price expectations, especially for the first two quarters of 2015,” Ole Hansen, head of commodity strategy at Saxo Bank A/S, said by e-mail. He forecasts Brent may drop as low as $60 a […]