U.S. trading on Tuesday moved to a shorter settlement cycle for securities transactions, putting investors and regulators on alert for increased trade failures and other hiccups in the world’s largest financial market over the coming days. Meanwhile, Live Nation Entertainment Inc. (NYSE: LYV), the parent company of Ticketmaster, plummeted Wednesday following news that the U.S. Department of Justice (DOJ) is filing an antitrust lawsuit against the company. Taylor Swift has remained suspiciously quiet. #siamstr