# Pershing Square

Pershing Square is an Asset Manager based in New York, United States.

## Overview

- **Organization type:** Asset Manager
- **Headquarters:** New York, United States
- **Region:** North America
- **Address:** New York, NY, United States
- **Founded:** 2004
- **Assets under management:** $10B–$20B (Altss estimate)
- **Website:** pershingsquareholdings.com

## Regulatory record

- **CRD number:** 132982
- **SEC file number:** 801-63688
- **Registration status:** Registered
- **Reports private funds:** Yes
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/132982

## About

PERSHING SQUARE INC. is an SEC-registered investment adviser in NEW YORK, NY, since 2004. The firm manages approximately $19.8 billion in assets. It has 48 employees and 11 investment advisers.

## Sectors

- Consumer
- Financial Services
- Real Estate
- Technology

## People

- Bill Ackman — CEO and Portfolio Manager

## Questions

### Who runs investment decisions at Pershing Square?

Bill Ackman, who founded the firm in 2004, is the CEO and Portfolio Manager and makes all binding investment decisions. He is supported by a small team of senior investment professionals, but the firm's public filings consistently identify him as the sole person responsible for the portfolio, and his public commentary drives the market narrative around every major position.

### Does Pershing Square use the activist playbook on every investment?

No. While the firm's most visible investments involve proxy fights and public campaigns — Chipotle Mexican Grill's turnaround and the Canadian Pacific proxy contest being prominent examples — many positions are built quietly. Ackman has described the approach as 'friendly activist when possible, confrontational when required,' and his research-heavy public presentations often function as the first move in an activist engagement rather than a recurring tactic.

### What happened to Pershing Square's plan to launch a US-listed fund?

In September 2024, Ackman filed for a proposed US-listed closed-end fund, Pershing Square USA, initially targeting $25 billion in assets. Weeks later, he withdrew the offering after reducing the target to roughly $2 billion, signaling that institutional demand did not match his publicly stated expectations. The reversal was documented by Reuters and The Wall Street Journal as an unusual public retreat for a manager with a large social-media following.

### How does Ackman use public communication to support his investment strategy?

Ackman publishes institutional-quality research presentations on the firm's website, hosts lengthy public conference calls with Q&A, and maintains an active presence on X (formerly Twitter). This transparency is not marketing veneer — it directly supports the firm's activist strategy by shaping public and shareholder opinion ahead of votes or management negotiations, a tactic that was most visible during the Allergan campaign and the fight over Herbalife.

### What is the Pershing Square Foundation, and is it related to the investment firm?

The Pershing Square Foundation is a separate philanthropic entity co-managed by Bill Ackman and his wife, Neri Oxman. It operates independently of the investment entity but shares the name and is funded by Ackman's personal capital. The foundation has made significant gifts to organizations including The Innocence Project, Teach For America, and the Human Vaccines Project, and the separation between foundation governance and fund governance is maintained through distinct boards.

## Related profiles

- [Puig Brands](https://altss.com/profile/puig-brands-saadr)
- [IDEX](https://altss.com/profile/idex-corp-de)

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Last updated: 2026-06-03T20:00:00.000Z

Canonical page: https://altss.com/profile/pershing-square-inc

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