Bats Options Exchange launchedBats launched the Bats Options Exchange for trading US equity options on Friday February 26. It will start with live trading in options on 18 securities which include cash equities and exchange-traded funds. More than 6,400 underlying symbols will be rolled out by May 17.Joe Ratterman, chief executive of Bats Global Markets and Bats Exchange, said in a statement: “We look forward to injecting competition into the US options markets just as we have in US and European equities.”...