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Inside the Suits
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Bill Ackman

Pattern file

Bill Ackman

Fund manager, Pershing Square
13F, 13D/G, 8-K

Lifetime record

On record since Jan 2022, latest document Aug 2026

2 receipts
50% words held, 1 of 2 scored
43 days average gap, words to document
1 open watch, next 2026-11-16

Promises on watch: 4 kept, 0 broken, 2 not yet due.

The record as a path

Bill Ackman
Named six new investments on Tuesday. Thursday's filing could only prove four.Still openHe went all-in on streaming. The filing that proved it landed after he had gone.Tell
Statements we checked1

What the colours mean

Each root, and the card it starts from

  • RoutineThe gap exists but means nothing. Most threads land here, and saying so is the point.
  • AlignedWords and filings point the same way, but nothing was promised.
  • KeptA checkable promise the filings confirm was honoured.
  • MissedA checkable promise with a deadline, and the deadline passed without it being met.
  • TellThe gap reveals something the words alone would not. Red stays rare on purpose.
  • Still openAn open question. It runs to the date something is due to settle it.
  • Open callA published forecast still running, scored at its deadline.
  • Call wonA finished call that was right. Blue, as on the board.
  • Call lostA finished call that was wrong. It stays on the board for good.

Each step along a root

  • SaidTheir own words: a post, a speech, an interview, a call.
  • TradeA buy or a sell in a disclosure report or a Form 4.
  • FilingAnother document on the public record.
  • Law or orderA vote, a bill, an executive order, a rule.
  • CourtA complaint, an order or a judgment.
  • DataAn official number: Treasury, Medicare, the Fed, an agency release.
  • EventSomething that happened and is on the record.
  • StockThe move since the thread opened. Green up, orange down.

Words are blue. Documents are grey and told apart by their icon. The last step takes the colour of the verdict, or of the question while it is still open. Nothing here claims one thing caused another: it is what followed, in order, each with its source.

The playbook

He announces before he is required to. The quarterly shareholder letter names positions in plain English, often including ones bought after the quarter cutoff that no filing will show for another three months. That makes him unusually checkable in one direction and unverifiable in the other: what the filings cover, they confirm; what they do not cover, you are taking on faith until the next cycle. His letters also read as arguments, not disclosures, so the reasoning is on the record and can be scored later against what the position actually did.

One structural note for anyone following the paperwork: as of the June 2026 quarter the holdings are filed by Pershing Square Inc., the listed parent, not by Pershing Square Capital Management, which now files only a notice pointing at the parent. The old filer name returns nothing.

Receipt history

  1. 17 He went all-in on streaming. The filing that proved it landed after he had gone. Jan 26, 2022 Primary verified tell
  2. 08 Named six new investments on Tuesday. Thursday's filing could only prove four. Aug 12, 2026 Primary verified aligned

What we're watching

  • Mid-Nov 2026 Alcon and Intercontinental Exchange were named in the August letter but bought after the quarter cutoff. First filing that can confirm them is the Q3 13F.
  • Ongoing Netflix thesis is on the record ("effectively won the streaming wars"). The position is dated and sized, so the argument is scoreable from here.
  • Next letter Alphabet is fully exited as of Q2. Watch whether the letters ever explain the sale, which they have not so far.

Statement stream, awaiting a filing pair

  • Alphabet was exited entirely, but the letter never mentions the sale. It appears once in a performance table and nowhere in the commentary.

    Pershing Square 2Q26 letter, read in full, Aug 12, 2026

    A silence, not a statement. Noted here because the next letter that does address it becomes a pair with the filings that already recorded the exit.

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