Bats Global Markets Inc. has changed its mind about IEX Group Inc.’s controversial proposal to become a U.S. stock exchange.
Bats withdrew support for the upstart venue’s bid, saying in a letter to regulators on Thursday that IEX made “gross misrepresentations” about the operations of competitors. IEX’s actions "call into question the applicant’s professional judgment," Bats said in the letter to the Securities and Exchange Commission, a copy of which was obtained by Bloomberg News.