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Closelook Records · Manager

Bill Ackman — Pershing Square

B+ SEC EDGAR (13F-HR) ↗ Pershing Square founded 2004; 13F series continuous, since Q2 2026 filed under the restructured Pershing Square Inc.

A sworn SEC filing, but a lagged quarterly window: long US-listed equities only, up to 45 days old on arrival, no return series derivable. The listed fund PSH (LSE/Euronext) carries a daily NAV — the future series for this record.

Asset focusConcentrated US large caps — typically 8–15 positions
StyleHigh-conviction activist value; one of the most concentrated large books in the 13F universe
StandingAmong the most-followed activist investors; the quarterly filing moves the named stocks

The record, as shown at the source

MetricValueAs ofSource
13F book (Q2 2026) $19.5B across 14 issuers 2026-06-30, filed 14 Aug 2026 SEC EDGAR 13F-HR ↗
Top position Uber — 12.7% of the 13F book 2026-06-30, filed 14 Aug 2026 SEC EDGAR 13F-HR ↗

Figures are quoted exactly as the named source showed them on the stated date; they move daily — verify at the source before relying on them.

The Closelook battery insufficient data

No verifiable daily series is publicly available for this record yet, so we compute no battery and no rating — a missing series never becomes a low score. What would unlock it is described in the grade basis above and in the methodology.

The 13F-HR book as of 2026-06-30

$19.5B across 14 issuers, reported for quarter end 2026-06-30 and filed 2026-08-14 — the figures below are already up to a quarter old by construction. 13F-HR covers long US-listed equity positions only, as of quarter end, filed up to 45 days later. Not the whole book.

#IssuerValueWeight
1 UBER TECHNOLOGIES INC $2.5B 12.7%
2 BROOKFIELD CORP $2.4B 12.6%
3 MICROSOFT CORP $2.3B 11.9%
4 AMAZON COM INC $2.0B 10.5%
5 HOWARD HUGHES HOLDINGS INC $2.0B 10.2%
6 RESTAURANT BRANDS INTL INC $1.9B 9.6%
7 META PLATFORMS INC $1.8B 9.2%
8 VISA INC $1.1B 5.8%
9 MASTERCARD INCORPORATED $1.1B 5.6%
10 S&P GLOBAL INC $1.1B 5.4%

Quarter rotation vs 2026-03-31

New positions

  • UBER TECHNOLOGIES INC $2.5B
  • BROOKFIELD CORP $2.4B
  • MICROSOFT CORP $2.3B
  • AMAZON COM INC $2.0B
  • RESTAURANT BRANDS INTL INC $1.9B
  • META PLATFORMS INC $1.8B
  • VISA INC $1.1B
  • MASTERCARD INCORPORATED $1.1B

Exited

none

Added (shares)

  • HOWARD HUGHES HOLDINGS INC +209.5%

Trimmed (shares)

none

Direction from aggregated share counts (CUSIP-matched across quarters); lists show the largest moves by value, up to eight each.

Aggregated by issuer from the information table at SEC EDGAR.

The Closelook read

Fourteen positions, nineteen and a half billion dollars — the most concentrated large book in the catalogue, now filed under the restructured Pershing Square Inc., with the listed PSH fund as the record's verifiable daily layer.

Ackman's book is the cleanest illustration of what concentration means in filing terms: fourteen issuers where Duquesne holds eighty-nine. The entity change matters for reading the record — Pershing Square Inc. files from Q2 2026, so quarter-over-quarter comparisons under the new CIK only begin with Q3; the longer series sits under the old LP filings. The listed Pershing Square Holdings fund publishes a daily NAV, which makes this one of the few 13F records that can eventually be upgraded with a real return series.

Entry updated 22 Oct 2026 · All records · Famous Calls Record