GiveRate / All records / Forbes 400 (Sept. 2026) / William Ackman
William Ackman
1–5%
William Ackman has given an estimated 1–5% of current net worth ($10.9B), based on Forbes' philanthropy score.
- GiveRate
- 1–5%
- Net worth
- $10.9B
- Stated lifetime giving
- Not stated
- Forbes 400
- #142 · Hedge funds · New York, New York
- Status
- Source-reported range
- Sources
- Forbes 400 profile · Sept. 2026
The math
Forbes philanthropy score 2 of 5: lifetime giving is 1–5% of current net worth. The range is Forbes' own banding; GiveRate shows it as published.
Profile
- Age
- 60
- Residence
- New York, New York
- Industry
- Finance & Investments
- Source of wealth
- Hedge funds
- Self-made
- Yes
- Role
- Founder, CEO, Pershing Square Capital Management, L.P.
- One-year change
- $9.1B (#143) in Sept. 2025 to $10.9B (#142) in Sept. 2026, a gain of 20%.
What the range means in dollars
Forbes gives William Ackman a philanthropy score of 2 out of 5, meaning lifetime giving equals 1% to 5% of current net worth. On a $10.9B fortune, that implies lifetime giving of roughly between $109M and $545M. 138 of the 400 share this score, 177 score lower and 68 score higher.
For scale: 1% to 5% of a $50,000 household income would be $500 to $2,500.
Giving on record
Ackman's Pershing Square Foundation has committed some $500 million to causes like the Innocence Project, Human Rights Watch and Teach For America.
From the Forbes profile (Sept. 2026).
Others in Finance & Investments
- Warren Buffett: ≥33.3% · $144B
- Thomas Peterffy: Under 1% · $107B
- Michael Bloomberg: ≥21.1% · $94.9B
- Jeff Yass: Under 1% · $77.8B
- Ken Griffin: 4.3% · $60.5B
- Stephen Schwarzman: 1–5% · $46.4B
Others in New York
- Michael Bloomberg: ≥21.1% · $94.9B
- Julia Koch & family: 1–5% · $84.6B
- Stephen Schwarzman: 1–5% · $46.4B
- Marilyn Simons & family: 20%+ · $36.6B
- Israel Englander: Under 1% · $27.6B
- Rupert Murdoch & family: Under 1% · $25.0B
Questions
How much has William Ackman given to charity?
Forbes scores William Ackman 2 of 5 for philanthropy, meaning lifetime giving of 1% to 5% of net worth, roughly between $109M and $545M on a $10.9B fortune.
What is William Ackman's net worth?
Forbes estimates $10.9B as of September 2026, ranking #142 on the Forbes 400.
What is William Ackman's GiveRate?
1–5%. GiveRate is lifetime giving as a share of wealth, built from published Forbes figures. See giverate.org/methods/ for the method.
GiveRate is an estimate built only from the published figures above. Wealth and giving totals are themselves estimates. See methods. Spot an error? Request a correction. See all Forbes 400 (Sept. 2026) · Open in the interactive rankings · Calculate your own GiveRate