Bill Ackman first heard about Warren Buffett when he was 20. Four years later, he read his first Berkshire Hathaway shareholder letter, and something clicked. “I was inspired to become an investor,” the hedge fund manager recalled.

Howard Hughes Holdings has a market capitalization of $3.4 billion, compared with Berkshire Hathaway’s market cap of about $1.2 trillion.

Hedge fund manager Bill Ackman advised Harvard to treat President Trump's demands with respect and said the president is fair to challenge the university's tax-exempt status if there aren't major changes.