Seaport Entertainment Group Inc.
SEG- Exchange
- NYSE
- Industry
- Services-Miscellaneous Amusement & Recreation
- SEC CIK
- 0002009684
No open-market purchases or sales by Seaport Entertainment Group Inc. insiders were filed in the last 90 days; 116 institutions reported holding it in 13F filings for Q2 2026, worth $296.0M in total; Pershing Square is the only superinvestor holding it.
13F holders, Q3 2025
Institutional positions in Seaport Entertainment Group Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 101
- −1 vs. Q2 2025
- Shares held
- 9.91M
- +1.07M (+12.1%) vs. Q2 2025
- Total value
- $227.1M
- +$62.2M (+37.8%) vs. Q2 2025
- New holders
- 17
- 19 more added
- Sold out
- 18
- 35 more reduced
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting SEG on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 116 | $296.0M |
| Q1 2026 | 118 | $231.3M |
| Q4 2025 | 113 | $205.6M |
| Q3 2025 | 101 | $227.1M |
| Q2 2025 | 103 | $165.1M |
| Q1 2025 | 121 | $192.0M |
| Q4 2024 | 127 | $268.7M |
| Q3 2024 | 118 | $134.7M |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Seaport Entertainment Group Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Pershing Square Capital Management, L.P. | 5,023,780 | $115.1M | 0.79% | 00.0% | Unchanged |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −40,895−100.0% | Sold out |
| HighTower Advisors, LLC | 0 | $0 | 0.00% | −31,427−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −23,754−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −13,173−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −12,120−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −10,566−100.0% | Sold out |
| Concorde Financial Corp | 0 | $0 | 0.00% | −4,950−100.0% | Sold out |
| Steward Partners Investment Advisory, LLC | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −182−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −129−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −43−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −21−100.0% | Sold out |
| Manchester Capital Management LLC | 0 | $0 | 0.00% | −18−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −17−100.0% | Sold out |
| TD Waterhouse Canada Inc. | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| Fifth Third Bancorp | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Allworth Financial LP | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Norges Bank | – | – | – | – | Not filed |