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, Q2 2026
Institutional positions in Seaport Entertainment Group Inc. as of Jun 30, 2026. 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
- 116
- +2 vs. Q1 2026
- Shares held
- 11.1M
- +5.44M (+95.5%) vs. Q1 2026
- Total value
- $296.0M
- +$172.7M (+140.0%) vs. Q1 2026
- New holders
- 14
- 38 more added
- Sold out
- 12
- 24 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Seaport Entertainment Group Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Charles Schwab Investment Management Inc | 63,587 | $1.69M | 0.00% | +1,581+2.5% | Added |
| Peapod Lane Capital LLC | 109,851 | $2.92M | 1.97% | +17,345+18.8% | Added |
| Goldman Sachs Group Inc | 117,344 | $3.12M | 0.00% | +13,148+12.6% | Added |
| Rangeley Capital, LLC | 153,517 | $4.08M | 3.99% | 00.0% | Unchanged |
| State Street Corp | 185,838 | $4.94M | 0.00% | +7,857+4.4% | Added |
| Geode Capital Management, LLC | 208,136 | $5.54M | 0.00% | +23,116+12.5% | Added |
| Solas Capital Management, LLC | 212,892 | $5.66M | 3.03% | −10,026−4.5% | Reduced |
| Cerity Partners LLC | 314,955 | $8.38M | 0.01% | −3,964−1.2% | Reduced |
| Vanguard Capital Management LLC | 343,549 | $9.14M | 0.00% | +15,864+4.8% | Added |
| Vanguard Portfolio Management LLC | 384,200 | $10.2M | 0.00% | +341,138+792.2% | Added |
| Dimensional Fund Advisors LP | 396,566 | $10.5M | 0.00% | −58,581−12.9% | Reduced |
| BlackRock, Inc. | 553,120 | $14.7M | 0.00% | +47,491+9.4% | Added |
| Rubric Capital Management LP | 568,530 | $15.1M | 0.14% | 00.0% | Unchanged |
| Gate City Capital Management, LLC | 723,248 | $19.2M | 4.99% | +33,801+4.9% | Added |
| Kahn Brothers Group Inc | 917,005 | $24.4M | 3.86% | +23,778+2.7% | Added |
| Pershing Square Inc.SuperinvestorPershing Square | 5,023,780 | $133.6M | 0.69% | +5,023,780 | New |
| Colony Group, LLC | 0 | $0 | 0.00% | −596−100.0% | Sold out |
| Marnell Management LLC | 0 | $0 | 0.00% | −32,300−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −25,800−100.0% | Sold out |
| ArrowMark Colorado Holdings LLC | 0 | $0 | 0.00% | −18,406−100.0% | Sold out |
| Odyssean, LLC | 0 | $0 | 0.00% | −9,723−100.0% | Sold out |
| Byrne Asset Management LLC | 0 | $0 | 0.00% | −6,320−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −5,216−100.0% | Sold out |
| Bayban | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Greykasell Wealth Strategies, Inc. | 0 | $0 | 0.00% | −18−100.0% | Sold out |
| Root Financial Partners, LLC | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Pershing Square Capital Management, L.P. | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |
| MSRH, LLC | – | – | – | – | Not filed |
| Sunbelt Securities, Inc. | – | – | – | – | Not filed |