Bill Ackman, founder and CEO of Pershing Square Capital Management, has filed to go public twice, aiming to create an untouchable stream of capital for the fund. His strategy aligns with that of Warren Buffett, who prioritized the creation of permanent capital at Berkshire Hathaway. Every 100 PSUS shares that investors purchase will come with 20 PSPS shares, with Ackman aiming to raise at least $5 billion through the IPO. The move aligns to Ackman’s growing public profile and reflects his admiration for Buffett.