William Albert Ackman is an American investor and founder of Pershing Square, known for concentrated portfolios and activist investments. He earned a BA at Harvard College in 1988 and an MBA at Harvard Business School in 1992. He co-founded Gotham Partners before establishing Pershing Square, whose official biography dates its founding to 2003; accounts of the capital-management fund’s launch often use 2004.
Ackman’s career has included public campaigns involving companies such as MBIA, Herbalife and Canadian Pacific, alongside major losses and gains in individual investments. His current corporate biography lists leadership at Pershing Square and Howard Hughes Holdings. He founded the Pershing Square Foundation in 2006. The Autopilot Ackman Tracker is a separate strategy based on public disclosures.
Un octágono por cada etapa de la vida de Bill Ackman. Cada uno de los ocho ejes se puntúa de 0 a 5 con una rúbrica escrita, a partir de pruebas documentadas y con su fuente; un eje sin pruebas es una laguna, no un cero. No hay total ni forma ideal: es un perfil, no una clasificación. El aspecto físico y la personalidad no son ejes, porque no pueden puntuarse con pruebas.
ResumenGenerado a partir de datos documentados: el cargo ocupado, los ingresos frente a los percentiles del IRS, el título más alto registrado y el historial legal revisado. Los ejes sin pruebas documentadas se omiten; las fases investigadas se añaden a través de la wiki.Solo 2 de los 8 ejes tienen pruebas documentadas, así que aún no se dibuja una forma.
Sin total ni forma ideal: un radio más largo significa más de ese eje, así que un radio largo de Mala conducta es más mala conducta documentada.
Puntuaciones, rúbrica y fuentes
01Educación4 de 5
Confianza mediaHighest recorded degree: BA and MBA, Harvard University..[1]Máximo nivel alcanzado hasta entonces: 1 secundaria, 2 algo de universidad, 3 grado universitario, 4 máster o título profesional, 5 doctorado.
02Riqueza4 de 5
Confianza mediaDocumented income of $900M in 2023 is in the top 1% of US returns by adjusted gross income (IRS, tax year 2022, as tabulated by the Tax Foundation). Income, not net worth.[2]Patrimonio o ingresos frente a los umbrales nacionales de la época: 1 por debajo del hogar mediano, 3 el 5% superior, 5 el 0.1% superior.
03CargoSin pruebas
Alcance del cargo ejercido: 1 nivel inicial, 3 alto directivo o legislador, 5 jefe de Estado o de gobierno, o el máximo cargo de una gran institución.
04Imagen públicaSin pruebas
Aprobación o valoración pública donde se midió: 1 menos del 20%, 3 de 35 a 50%, 5 más del 65%.
05SaludSin pruebas
Salud documentada cuando existe un examen o una divulgación: 5 ninguna preocupación documentada, 1 una afección grave documentada.
06Mala conductaSin pruebas
El historial legal y ético documentado dentro de la etapa, como en el medidor de conducta indebida: 0 ninguno documentado, 1 solo asuntos resueltos a su favor, 2 un asunto abierto, 3 una resolución, 4 dos o tres, 5 cuatro o más. Más es más conducta indebida documentada.
07Bien socialSin pruebas
Efectos evaluados de lo que hizo en la etapa sobre la salud, la seguridad, la educación, los derechos y el medio ambiente, según estadísticas oficiales o pruebas revisadas por pares: 0 claramente perjudicial, 2.5 mixto, 5 claramente beneficioso.
08Bien económicoSin pruebas
Efectos evaluados de lo que hizo en la etapa sobre la eficiencia, el crecimiento y la sostenibilidad fiscal, según la CBO y pruebas revisadas por pares, como en la lectura de bueno para la sociedad: 0 claramente perjudicial, 2.5 mixto, 5 claramente beneficioso.
Ingresos por año1
Lo que sumó cada año: el sueldo, más ingresos externos, regalías, patrocinios, premios e ingresos por inversiones cuando una fuente los recoge. Una declaración financiera da rangos, que se muestran como tales.
Latest eligible personal non-derivative balance found in the 12 recent Forms 4 reviewed, dated to the reported transaction. Direct ownership as reported. This is one security disclosure, not a complete current portfolio. Subsequent undisclosed changes are possible. Conditional or restricted shares may be included; see the filing footnotes. No market valuation, position cost basis or unrealized P&L is inferred.
Bill Ackman — PSUS reported personal ownership · a 30 abr 2026
Valor
Asignación
Acciones
Ganancia/pérdida no realizada
PSUSPershing Square USA, Ltd. — Common Shares of Beneficial Interest
No divulgado
4.000.000
No divulgado
Solo parte de la cartera es pública
El cálculo requiere coste y valoración fechada en la misma moneda. Es una ganancia o pérdida no realizada, sin dividendos ni ganancias realizadas. Los datos ausentes no se estiman.
Actividad personal divulgada. La fecha de publicación puede diferir de la operación; un comentario no es un registro completo.
Divulgaciones de operaciones personales
Partial SEC Form 4 coverage: up to 12 recent filings since January 2025 reviewed, displaying up to 24 eligible non-derivative transaction rows. Individual reporting identity and ownership were checked. Fund-held, ambiguous joint-owner and derivative rows are excluded; 21 non-derivative rows were excluded by ownership. Direct and specifically verified sole-beneficial entity ownership are distinguished. Awards, gifts, conversions, exercises and withholding events are not treated as open-market investment profits. Share balances are historical and may include restrictions; this is not a complete current portfolio or tax-lot ledger.
Pershing Square USA, Ltd.: Purchase (SEC code P), 3,500,000 Common Shares of Beneficial Interest shares. Reported price: $50.0000 per share; read filing footnotes for weighted-average pricing and conditions. Direct ownership as reported. Acquisition lot costs and realized P&L are not established by this filing.
No divulgado
1 may 2026Operada: 30 abr 2026
Posiciones de fondos y estrategias seguidas
Últimas posiciones publicadas y sus fechas. Pueden haber cambiado. Las operaciones divulgadas no determinan las acciones restantes ni su coste.
These are the investment manager’s reported positions, not the named person’s personal brokerage holdings. Form 13F shows reportable long securities at quarter-end and omits cash, short positions and many foreign/private assets. Showing 14 of 14 reported share positions; full filings are linked. 0 option, principal-amount or warrant/debt rows are excluded. Option figures describe underlying exposure, not option premiums. Allocation is within the reported non-option share positions, not total fund assets. 13F does not disclose purchase costs or actual P&L.
Pershing Square Inc. — SEC 13F · a 30 jun 2026
Valor
Asignación
Acciones
Coste de adquisición
Valor de mercado
Ganancia/pérdida no realizada
CUSIP 90353T100UBER TECHNOLOGIES INC — COM
12,72 %
34.326.200
No divulgado
Obra y contribuciones8
Iniciativas1
2006 — Pershing Square Foundation[3]profile-research-2006-pershing-square-foundationFounded the Pershing Square Foundation to support social-sector organizations and initiatives.
Obras5
1988–1992 — Harvard education[1]profile-research-1988-1992-harvard-educationCompleted a Harvard College BA in 1988 and an MBA at Harvard Business School in 1992.
Los datos biográficos de Bill Ackman se basan en la wiki y sus referencias numeradas. Las posiciones y operaciones citan sus fuentes en sus propias secciones. Leer la wiki
Pershing Square USA, Ltd.: Purchase (SEC code P), 500,000 Common Shares of Beneficial Interest shares. Reported price: $42.0000 per share; read filing footnotes for weighted-average pricing and conditions. Direct ownership as reported. Acquisition lot costs and realized P&L are not established by this filing.
No divulgado
La ganancia realizada requiere coste y venta correspondientes al mismo valor y cantidad. Los rangos, cambios trimestrales inferidos y comentarios no determinan beneficios. Los datos ausentes no se estiman.
El cálculo requiere coste y valoración fechada en la misma moneda. Es una ganancia o pérdida no realizada, sin dividendos ni ganancias realizadas. Los datos ausentes no se estiman.
Son posiciones y rendimientos de clientes de la estrategia seguida. No demuestran las posiciones ni las ganancias personales.
Ackman Tracker · a 25 oct 2026
Valor
Asignación
Ganancia/pérdida no realizada
AMZNAmazon.Com Inc
12,3 %
No divulgado
BNBrookfield Corporation
12,2 %
No divulgado
MSFTMicrosoft Corp
11,9 %
No divulgado
Solo parte de la cartera es pública · 10 posiciones adicionales no publicadas (63,6 %)
El cálculo requiere coste y valoración fechada en la misma moneda. Es una ganancia o pérdida no realizada, sin dividendos ni ganancias realizadas. Los datos ausentes no se estiman.
Rentabilidad publicada de la cartera
a 23 oct 2026 · Inicio: 3 feb 2023
Último mes
+1,99 %
Desde enero
-1,49 %
1 año
+0,44 %
Desde el inicio
+37,78 %
Metodología de rentabilidad
The performance data presented reflects the aggregated results of actual client portfolios managed by the Registered Investment Adviser (RIA), based on the trading activity in the securities contained in the relevant portfolio over the specified period. If fewer than 10 clients are invested in the portfolio, the data represents the aggregate performance of all clients following this strategy. Performance figures are shown net of advisory fees, calculated using the applicable subscription fee and an assumed $50,000 account size. Because subscription fees are flat rather than asset-based, accounts smaller than $50,000 would experience a higher effective fee percentage and lower net performance, while larger accounts would experience a lower effective fee percentage. Actual investor outcomes can vary due to factors like brokerage support for fractional shares, account size, trade timing, fees, and taxes, and past performance should not be interpreted as a guarantee of future results or typical of all portfolios.
Became chairman of Pershing Square’s board in June 2024 and executive chairman of Howard Hughes Holdings in May 2025, according to his corporate biography.
Ackman Tracker[4]autopilot-26963Autopilot lists this strategy as following public disclosures, public commentary or the associated investment firm. The named person does not thereby operate or endorse the tracker.
Career and background[1]autopilot-biographyInvestor and founder of Pershing Square Capital Management, known for concentrated and activist investment strategies.
Professional profile and background[1]profile-research-biographyWilliam Albert Ackman is an American investor and founder of Pershing Square, known for concentrated portfolios and activist investments. He earned a BA at Harvard College in 1988 and an MBA at Harvard Business School in 1992. He co-founded Gotham Partners before establishing Pershing Square, whose official biography dates its founding to 2003; accounts of the capital-management fund’s launch often use 2004.
Ackman’s career has included public campaigns involving companies such as MBIA, Herbalife and Canadian Pacific, alongside major losses and gains in individual investments. His current corporate biography lists leadership at Pershing Square and Howard Hughes Holdings. He founded the Pershing Square Foundation in 2006. The Autopilot Ackman Tracker is a separate strategy based on public disclosures.
Empresas fundadas2
1992–2003 — Gotham Partners[3]profile-research-1992-2003-gotham-partnersCo-founded Gotham Partners, which invested in public and private companies, before building Pershing Square.
2003–2004 — Pershing Square founding[3]profile-research-2003-2004-pershing-square-foundingPershing Square’s official biography dates its founding to 2003. The launch of Pershing Square Capital Management with outside capital is also described in accounts dated 2004; these refer to related stages rather than two separate firms.
