Activist · CIK 0001336528

Bill Ackman

Pershing Square

Bill Ackman runs Pershing Square, an activist overseeing $15.53B in disclosed equity holdings (SEC CIK 0001336528). The latest portfolio (2025Q4) discloses 11 positions across 6 sectors, with the largest positions in BN, UBER and AMZN. On a mark-to-market basis the tracked portfolio has returned 115.0% since 2016Q1. OpenStocks tracks 40 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.

Track Bill's filings View holdings

Portfolio

$15.53B

Positions

11

Quarter

2025Q4

Filings tracked

40

5Y+23.5%Full performance →

Quarter

2025Q4 2025Q3 2025Q2 2025Q1 2024Q4 2024Q3 2024Q2 2024Q1 2023Q4 2023Q3 2023Q2 2023Q1

Holdings

Sorted by value · 2023Q1

Sector8 positions

1

LOWLOWES COS INC

Consumer Cyclical·Home Improvement Retail

19.64%

of portfolio

Number of shares

10,036,114 sh

Holdings current value

$2.01B

Avg closing price

$94.47

Last action

Exited

2024Q1

Current —

2

CMGCHIPOTLE MEXICAN GRILL INC

Consumer Cyclical·Restaurants

17.21%

of portfolio

Number of shares

1,029,186 sh

Holdings current value

$1.76B

Avg closing price

$71.95

-51.2%

Last action

Exited

2025Q4

Current $35.08

3

QSRRESTAURANT BRANDS INTL INC

Consumer Cyclical·Restaurants

15.90%

of portfolio

Number of shares

24,194,166 sh

Holdings current value

$1.62B

Avg closing price

$44.61

+74.0%

Last action

Trimmed 0.2%

2025Q4

Current $77.61

4

HLTHILTON WORLDWIDE HLDGS INC

Consumer Cyclical·Lodging

12.82%

of portfolio

Number of shares

9,299,041 sh

Holdings current value

$1.31B

Avg closing price

$80.29

+311.5%

Last action

Trimmed 0.0%

2025Q4

Current $330.38

5

44267D107HOWARD HUGHES CORP

12.52%

of portfolio

Number of shares

15,984,532 sh

Holdings current value

$1.28B

Avg closing price

$70.42

Last action

Exited

2023Q3

Current —

6

13645T100CANADIAN PAC RY LTD

11.48%

of portfolio

Number of shares

15,238,044 sh

Holdings current value

$1.17B

Avg closing price

$25.27

Last action

Exited

2023Q2

Current —

7

GOOGALPHABET INC

Communication Services·Internet Content & Information

8.21%

of portfolio

Number of shares

8,069,770 sh

Holdings current value

$839.26M

Avg closing price

$106.37

+212.9%

Last action

Trimmed 1.9%

2025Q4

Current $332.77

8

GOOGLALPHABET INC

Communication Services·Internet Content & Information

2.22%

of portfolio

Number of shares

2,185,000 sh

Holdings current value

$226.65M

Avg closing price

$130.57

+157.4%

Last action

Trimmed 65.6%

2025Q4

Current $336.02

Portfolio heatmap

Box size = % of portfolio · color = return since filing

17.21% · -97.9%

15.90% · +15.6%

12.82% · +134.5%

HOWARD HUGHES CORP

12.52%

CANADIAN PAC RY LTD

11.48%

8.21% · +220.0%

2.22% · +223.9%

Sector exposure

Share of dollar value across the latest reported portfolio. Unclassified positions excluded.

Consumer Cyclical4 pos$6.70B86.3%
Communication Services2 pos$1.07B13.7%

(24.0% unclassified, excluded from %)