The Winklevoss donations to Trump 47 join similar maxed-out contributions from Jeffrey Sprecher, the founder, chairman, and CEO of Intercontinental Exchange, and his wife Kelly Lynn Loeffler, a former U.S. senator and CEO of Bakkt; Joe Ricketts, the founder and former CEO of TD Ameritrade; and Robert Bigelow, who owns Budget Suites of America and founded the now-defunct Bigelow Aerospace.