Bill Ackman. Sylvain Gaboury/Patrick McMullan via Getty Images Bill Ackman is known in the world of investing for risky bets that sometimes pay handsomely — and sometimes not. He waged an unsuccessful six-year campaign against dietary-supplement firm Herbalife, and made a now-legendary bet that the COVID-19 pandemic would tank the stock market. He's already known for combativeness in business, describing himself in a 2012 interview as "unfiltered." Increasingly, he's just as outspoken on politics. Since Hamas' terrorist attacks on Israel October 7, Ackman has led corporate America in condemning elite US colleges, their students, and their leaders for failing to...