SEG Seaport Entertainment Group Inc.
Seaport Entertainment Group Inc. (SEG) Institutional Ownership
What the institutions did with SEG last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeOwnership map
Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| PERSHING SQUARE INC. | 5.0M | 45.1% |
| KAHN BROTHERS GROUP INC | 917.0K | 8.2% |
| GATE CITY CAPITAL MANAGEMENT, LLC | 723.2K | 6.5% |
| Rubric Capital Management LP | 568.5K | 5.1% |
| BlackRock, Inc. | 553.1K | 5.0% |
| DIMENSIONAL FUND ADVISORS LP | 396.6K | 3.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 384.2K | 3.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 343.5K | 3.1% |
| Cerity Partners LLC | 315.0K | 2.8% |
| Solas Capital Management, LLC | 212.9K | 1.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 208.1K | 1.9% |
| STATE STREET CORP | 185.8K | 1.7% |
| Rangeley Capital, LLC | 153.5K | 1.4% |
| GOLDMAN SACHS GROUP INC | 117.3K | 1.1% |
| Peapod Lane Capital LLC | 109.9K | 1.0% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 63.6K | 0.6% |
| NORTHERN TRUST CORP | 60.5K | 0.5% |
| LPL Financial LLC | 51.7K | 0.5% |
| AQR CAPITAL MANAGEMENT LLC | 51.1K | 0.5% |
| VANGUARD FIDUCIARY TRUST CO | 50.9K | 0.5% |
| O'Keefe Stevens Advisory, Inc. | 49.1K | 0.4% |
| HORIZON KINETICS ASSET MANAGEMENT LLC | 42.5K | 0.4% |
| Trexquant Investment LP | 34.2K | 0.3% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 31.7K | 0.3% |
| Gem Investment Advisors, LLC | 28.0K | 0.3% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| PERSHING SQUARE INC. | New | 0 | 5.0M | +5.0M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 43.1K | 384.2K | +341.1K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 455.1K | 396.6K | -58.6K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 82.3K | 28.0K | -54.3K |
| BlackRock, Inc. | Increased | 505.6K | 553.1K | +47.5K |
| GATE CITY CAPITAL MANAGEMENT, LLC | Increased | 689.4K | 723.2K | +33.8K |
| LAZARD ASSET MANAGEMENT LLC | Reduced | 47.5K | 14.6K | -32.8K |
| Marnell Management LLC | Sold Out | 32.3K | 0 | -32.3K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 23.2K | 51.1K | +27.9K |
| CITADEL ADVISORS LLC | Sold Out | 25.8K | 0 | -25.8K |
| KAHN BROTHERS GROUP INC | Increased | 893.2K | 917.0K | +23.8K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 185.0K | 208.1K | +23.1K |
| ArrowMark Colorado Holdings LLC | Sold Out | 18.4K | 0 | -18.4K |
| Peapod Lane Capital LLC | Increased | 92.5K | 109.9K | +17.3K |
| Trexquant Investment LP | Increased | 17.6K | 34.2K | +16.6K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 327.7K | 343.5K | +15.9K |
| Marquette Asset Management, LLC | New | 0 | 14.7K | +14.7K |
| GOLDMAN SACHS GROUP INC | Increased | 104.2K | 117.3K | +13.1K |
| MORGAN STANLEY | Increased | 15.5K | 27.0K | +11.5K |
| Solas Capital Management, LLC | Reduced | 222.9K | 212.9K | -10.0K |
| HORIZON KINETICS ASSET MANAGEMENT LLC | Reduced | 52.4K | 42.5K | -9.9K |
| Odyssean, LLC | Sold Out | 9.7K | 0 | -9.7K |
| GABELLI FUNDS LLC | New | 0 | 9.2K | +9.2K |
| Invesco Ltd. | New | 0 | 9.1K | +9.1K |
| BANK OF AMERICA CORP /DE/ | New | 0 | 8.9K | +8.9K |
| Empirical Asset Management, LLC | New | 0 | 8.6K | +8.6K |
| Quinn Opportunity Partners LLC | New | 0 | 8.0K | +8.0K |
| STATE STREET CORP | Increased | 178.0K | 185.8K | +7.9K |
| INDEPENDENT INVESTORS INC | New | 0 | 7.6K | +7.6K |
| Byrne Asset Management LLC | Sold Out | 6.3K | 0 | -6.3K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 25.7K | 31.7K | +6.0K |
| Aquatic Capital Management LLC | Sold Out | 5.2K | 0 | -5.2K |
| AMERICAN CENTURY COMPANIES INC | Increased | 10.6K | 15.2K | +4.5K |
| Cerity Partners LLC | Reduced | 318.9K | 315.0K | -4.0K |
| WELLS FARGO & COMPANY/MN | Increased | 3.0K | 6.5K | +3.5K |
| Quantinno Capital Management LP | Increased | 24.1K | 27.6K | +3.5K |
| Russell Investments Group, Ltd. | Increased | 678 | 4.1K | +3.4K |
| Moran Wealth Management, LLC | Increased | 10.9K | 14.3K | +3.4K |
| NORTHERN TRUST CORP | Increased | 57.2K | 60.5K | +3.3K |
| CITIGROUP INC | Increased | 525 | 3.7K | +3.2K |
| DEUTSCHE BANK AG\ | Increased | 8.4K | 11.1K | +2.6K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 48.3K | 50.9K | +2.6K |
| RHUMBLINE ADVISERS | Increased | 5.8K | 8.2K | +2.5K |
| UBS Group AG | Reduced | 24.5K | 22.1K | -2.4K |
| JPMORGAN CHASE & CO | Reduced | 5.4K | 3.2K | -2.2K |
| Bank of New York Mellon Corp | Increased | 20.5K | 22.6K | +2.1K |
| Gem Investment Advisors, LLC | Reduced | 29.7K | 28.0K | -1.7K |
| Tidal Investments LLC | Reduced | 15.9K | 14.2K | -1.6K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Increased | 62.0K | 63.6K | +1.6K |
| Arax Advisory Partners | New | 0 | 1.5K | +1.5K |
| O'Keefe Stevens Advisory, Inc. | Increased | 47.7K | 49.1K | +1.4K |
| LPL Financial LLC | Reduced | 52.8K | 51.7K | -1.1K |
| Tower Research Capital LLC (TRC) | Reduced | 1.3K | 468 | -856 |
| XTX Topco Ltd | Increased | 19.5K | 20.3K | +833 |
| ROYAL BANK OF CANADA | Increased | 216 | 929 | +713 |
| Focus Partners Wealth | Sold Out | 596 | 0 | -596 |
| Quent Capital, LLC | Reduced | 672 | 92 | -580 |
| NISA INVESTMENT ADVISORS, LLC | Reduced | 1.2K | 709 | -491 |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 1.7K | 1.3K | -418 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | Reduced | 403 | 104 | -299 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.