William A Ackman
CIK 1056513 · CEO & Chairman · last filed 2026-08-19
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
CP price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
9TH FLOOR
NEW YORK, NY 10019
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| PS | CEO & Chairman | 1,668,200 | $45.66 | $76.17M | $0 | 1 | 2026-08-19 |
| PSUS | Chief Executive Officer | 4,841,000 | $37.61 | $182.07M | $240.86M | 1 | 2026-05-01 |
| HHH | Director | 18,851,964 | $76.23 | $1.44B | $214.05M | 10 | 2023-12-11 |
| Howard Hughes Corp (HHC) Delisted | Director | 16,530,051 | $78.76 | $1.30B | $1.53B | 25 | 2023-06-22 |
| CMG | Director | 54,464,750 | $31.89 | $1.74B | -$3.23B | 11 | 2021-09-08 |
| Element Solutions Inc (PAH) Delisted | Director | 40,451,506 | — | — | $0 | 3 | 2018-08-07 |
| CP | Director | 0 | $89.68 | $0 | -$4.18B | 1 | 2016-08-05 |
| ZTS | Director | 41,823,145 | $79.72 | $3.33B | -$0 | 1 | 2015-07-02 |
| J C PENNEY CO INC (JCP) Delisted | Director | 39,075,771 | — | — | $0 | 3 | 2013-07-03 |
| GENERAL GROWTH PROPERTIES INC (GGP) Delisted | Director | 23,953,782 | — | — | $0 | 2 | 2010-03-10 |
| BORDERS GROUP INC (BGP) Delisted | 10%+ Owner | 10,597,880 | — | — | $25.33M | 1 | 2007-11-29 |
| CERIDIAN CORP /DE/ (CEN) Delisted | 10%+ Owner | — | $20.73 | — | $0 | 1 | 2007-02-06 |
Recent Filings · Page 5 of 7
63 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2018-09-24 | Howard Hughes Corp (HHC) Delisted | Sell (S) | −154,980 | -$19.55M | EDGAR |
| 2018-09-19 | Howard Hughes Corp (HHC) Delisted | Mixed | −41,055 | -$5.14M | EDGAR |
| 2018-08-30 | CMG | Sell (S) | −2,470,071 | -$1.20B | EDGAR |
| 2018-08-07 | Element Solutions Inc (PAH) Delisted | Mixed | — | $0 | EDGAR |
| 2018-03-02 | CMG | Mixed | — | $0 | EDGAR |
| 2018-01-03 | Howard Hughes Corp (HHC) Delisted | Mixed | −7,500,000 | -$958.95M | EDGAR |
| 2017-03-14 | — | Mixed | −54,343,296 | -$597.78M | |
| 2016-12-13 | — | Mixed | −10,430,070 | -$154.89M | |
| 2016-08-05 | CP | Sell (S) | −29,522,670 | -$4.18B | EDGAR |
| 2016-06-13 | — | Mixed | — | $0 |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.