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Bill Ackman: Stocks, Trades and Net Worth in Stock · https://wallstpal.com/people/bill-ackman/ · saved 2026-10-28

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WallStPal explains public SEC filings and congressional stock trade reports in plain English. Nothing is for sale; the site is free and supported by ads.

How to read it

Form 4
The form a company insider (officer, director or owner of more than 10%) must file with the SEC within two business days of buying or selling the company's shares.
13F
A quarterly list of U.S. stocks held by an investment manager with more than $100 million, filed within 45 days after each quarter ends.
STOCK Act
A 2012 law that requires members of Congress to report stock trades by themselves, a spouse or a dependent child within 45 days.

A real example

In January 2016, when bank stocks were falling, JPMorgan Chase CEO Jamie Dimon bought 500,000 JPMorgan shares with his own money, worth about $26 million. His Form 4 made the purchase public within days, and investors read it as a strong sign of confidence.

Explain it like I'm 13

We read the long, boring forms that grown-ups file with the government and tell you what they say in normal words.

Data from public SEC filings and congressional reports. Information, not investment advice. Check every number against the filing linked on the page.

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Famous investor

Bill Ackman

Founder of Pershing Square Capital

Full name
William Albert Ackman
Born
1966, Chappaqua, New York

Who is Bill Ackman?

Ackman founded Pershing Square in 2004. He is an activist investor who buys big stakes and pushes for changes, and he made about $2.6 billion in 2020 from a bet that protected his fund against a market crash.

More about Bill Ackman on Wikipedia ↗

Pershing Square Capital: what the fund holds

$13.7BU.S. stock holdings, 2026-03-31
11Holdings
−$1.81BChange from the quarter before (includes new money)
Top holdingsValue% of fundChange
BN BROOKFIELD CORP$2.42B17.6%trimmed
AMZN AMAZON COM INC$2.39B17.4%added
UBER UBER TECHNOLOGIES INC$2.15B15.7%trimmed
MSFT MICROSOFT CORP$2.09B15.3%new
QSR RESTAURANT BRANDS INTL INC$1.67B12.2%trimmed
META META PLATFORMS INC$1.52B11.1%trimmed
HHH HOWARD HUGHES HOLDINGS INC$1.19B8.7%same
SEG SEAPORT ENTMT GROUP INC$107.9M0.8%same
GOOG ALPHABET INC$89.4M0.7%trimmed
HTZ HERTZ GLOBAL HLDGS INC$70.3M0.5%same

New positions: MSFT. Sold out of: HLT.

Every holding and change in Pershing Square Capital →

Examples

Founders often sell stock on a schedule set months in advance (a 10b5-1 plan) to pay taxes or diversify, so a sale is not always a sign of doubt. A large open-market purchase with their own money is rarer and usually says more. In January 2016, JPMorgan Chase CEO Jamie Dimon bought 500,000 JPMorgan shares, about $26 million, and the purchase was widely read as confidence in the bank.

Explain it like I'm 13

Imagine the founder of your favorite game company owns a giant pile of its shares. Each time they sell some, give some away, or buy more, they must tell the government within two business days. This page adds up those notes so you can see how big the pile is and what they have been doing with it.

From public SEC filings. Information, not investment advice. Values are estimates at the latest weekly price.