William Ackman

William Ackman

William Ackman (#389)

  • $ 9 B
  • Hedge funds
  • United States
  • M
  • 60 Years

About Me

Bill Ackman founded and runs Pershing Square Capital Management, a hedge fund with $20 billion in assets under management. Ackman created Pershing Square in 2004 and rose to fame for his short of bond insurer MBIA and his rescue of mall operator General Growth Properties. Pershing Square's stock portfolio is concentrated in 10 companies, including Chipotle, Uber and Amazon. Ackman is known for being outspoken, with more than 2 million followers on X. He endorsed Donald Trump in 2024 after decades of supporting Democrats. He publicly pressured Harvard to oust president Claudine Gay amid accusations of plagiarism and antisemitism until she resigned in January 2024.
About Images

Achievements

Career Highlights

A snapshot of the defining milestones, leadership decisions, and breakthroughs that shaped William Ackman’s rise and global influence.

  • #383   Billionaires (2026)
  • #143   Forbes 400 (2025)

Wealth Growth

Net Worth Growth Over Time

Tracking William Ackman’s net worth journey over the years, highlighting key growth phases and financial milestones.

Current Net Worth: $9.0B (May 4, 2026)