Cantor Fitzgerald won US approval for a box-office futures market that Hollywood executives said may harm the film industry.

The Commodity Futures Trading Commission voted in favor of a market that Cantor described as a way for movie-industry participants “to create liquidity and hedge their daily business activities.” The commission didn’t approve any contracts, a step needed to start trading. The film industry said box-office futures might be subject to manipulation.

Cantor becomes the second box-office futures market after the commission on April 16 cleared a Veriana Networks Inc. unit to let traders bet on a film’s opening weekend ticket sales, without approving specific contracts.