The record glut in aluminum will be no bar to rising prices because of delays in getting metal from warehouses, even as Barclays Plc advises investors to sell and Morgan Stanley says it has the worst outlook of any commodity.

Stockpiles will expand for at least the next four quarters, reaching a record 8.67 million metric tons by the end of 2013, or enough to make about 62 million cars, Barclays estimates. Production will exceed demand by the most since 2009 as output expands from China to Saudi Arabia, the bank says. Futures will rise as much as 16 percent to $2,400 a ton next year, the median of 29 analyst estimates compiled by Bloomberg.