Wikipedia's first sentence called it “american billionaire hedge fund manager who is the founder and chief executive officer of pershing square capit”. Today it says “founder and chief executive of pershing square capital management”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
We saved snapshots of this article over twenty years; you are reading the 2025 one. Red dashes: removed from Wikipedia since.Pale dots: rewritten; the numbered note shows what it says now.Red text: written in or rewritten since the previous snapshot.1 tap a number or a side note to jump between them
The opening as it read in 2025
American hedge fund manager (born 1966) William Albert Ackman (born May 11, 1966) is an American billionaire hedge fund manager who is the founder and chief executive officer of Pershing Square Capital Management , a hedge fund management company. His investment approach has made him an activist investor . As of May 2025, Ackman's net worth was estimated at $9.1 billion by Forbes . Ackman is a prolific philanthropist and signatory of The Giving Pledge , committing to give away at least 50% of his wealth by the end of his life to charitable causes. A longtime donor to Democratic candidates and organizations, Ackman endorsed Donald Trump in the 2024 United States presidential election . Ackman has expressed public support for Israel's actions in the Gaza war and has demanded the publication of the names of Harvard students involved in signing a letter condemning statements from Israeli officials. What Happened Next Is a Parable for ESG" . "Bill Ackman: what I think of GameStop and shareholder activism" . ii.co.uk .
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1297925390.
The opening as it stood in 2010
At one point in December 2007 his funds owned a 10% stake in Target Corporation , valued at $4.2 billion through the purchase of stock and derivatives . He now owns a 7.8% stake.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 363970418.
The opening as it stood in 2015 2 passages from the previous snapshot no longer appear
"Bill" Ackman (born May 11, 1966) is an American hedge fund manager and philanthropist.He is the founder and CEO of Pershing Square Capital Management LP, a hedge fund management company.He considers himself an activist investor .
Red text was written in or rewritten since the previous snapshot. Their copy is revision 669372852.
The opening as it stood in 2020
William Albert Ackman (born May 11, 1966) is an American investor and hedge fund manager . He is the founder and CEO of Pershing Square Capital Management , a hedge fund management company. Ackman is considered by some to be a contrarian investor but considers himself an activist investor .
Red text was written in or rewritten since the previous snapshot. Their copy is revision 964269527.
The opening as it stood on October 6, 2023 1 passage from the previous snapshot no longer appear
Billionaire American hedge fund manager and investor William Albert Ackman (born May 11, 1966) is an American billionaire hedge fund manager who is the founder and chief executive officer of Pershing Square Capital Management , a hedge fund management company.His investment approach has made him an activist investor .As of June 2023 , Ackman's net worth was estimated at $3.5 billion by Forbes .What Happened Next Is a Parable for ESG" .
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1178407642.
Today
Wikipedia's first sentence called it “american billionaire hedge fund manager who is the founder and chief executive officer of pershing square capit”. Today it says “founder and chief executive of pershing square capital management”. Read the current article and compare.
2010
2015
2020
Oct '23
2025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.
What Wikipedia says this is
Every article opens by defining its subject. This one was redefined since October 7, and today's defining sentence is their current revision.
Then
american billionaire hedge fund manager who is the founder and chief executive officer of pershing square capit
Now
founder and chief executive of pershing square capital management
Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.
