Who owns Seaport Entertainment Group Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of SEG from SEC Form 13F filings across 115 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 115 institutions disclosed 11.1M shares of Seaport Entertainment Group Inc. worth $296.0M — about 86.9% of shares outstanding; the largest disclosed holder is PERSHING SQUARE INC.. Source: SEC Form 13F filings, parsed by EvidInvest.
115
13F holders
$296.0M
value, 2026 filers
86.9%
of shares outstanding (11.1M sh)
14
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of SEG's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | PERSHING SQUARE INC.NEW | 5.0M | $133.6M | 0.7% | 39.2% | new |
| 2 | KAHN BROTHERS GROUP INC | 917,005 | $24.4M | 3.9% | 7.2% | +2.7% |
| 3 | GATE CITY CAPITAL MANAGEMENT, LLC | 723,248 | $19.2M | 5.0% | 5.6% | +4.9% |
| 4 | Rubric Capital Management LP | 568,530 | $15.1M | 0.1% | 4.4% | 0.0% |
| 5 | BlackRock, Inc. | 553,120 | $14.7M | 0.0% | 4.3% | +9.4% |
| 6 | DIMENSIONAL FUND ADVISORS LP | 396,566 | $10.5M | 0.0% | 3.1% | -12.9% |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 384,200 | $10.2M | 0.0% | 3% | +792.2% |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | 343,549 | $9.1M | 0.0% | 2.7% | +4.8% |
| 9 | Cerity Partners LLC | 314,955 | $8.4M | 0.0% | 2.5% | -1.2% |
| 10 | Solas Capital Management, LLC | 212,892 | $5.7M | 3.0% | 1.7% | -4.5% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 208,136 | $5.5M | 0.0% | 1.6% | +12.5% |
| 12 | STATE STREET CORP | 185,838 | $4.9M | 0.0% | 1.5% | +4.4% |
| 13 | Rangeley Capital, LLC | 153,517 | $4.1M | 3.7% | 1.2% | 0.0% |
| 14 | GOLDMAN SACHS GROUP INC | 117,344 | $3.1M | 0.0% | 0.9% | +12.6% |
| 15 | Peapod Lane Capital LLC | 109,851 | $2.9M | 2.0% | 0.9% | +18.8% |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 63,587 | $1.7M | 0.0% | 0.5% | +2.5% |
| 17 | NORTHERN TRUST CORP | 60,461 | $1.6M | 0.0% | 0.5% | +5.8% |
| 18 | LPL Financial LLC | 51,711 | $1.4M | 0.0% | 0.4% | -2.0% |
| 19 | AQR CAPITAL MANAGEMENT LLC | 51,134 | $1.4M | 0.0% | 0.4% | +120.1% |
| 20 | VANGUARD FIDUCIARY TRUST CO | 50,880 | $1.4M | 0.0% | 0.4% | +5.4% |
| 21 | O'Keefe Stevens Advisory, Inc. | 49,085 | $1.3M | 0.3% | 0.4% | +3.0% |
| 22 | HORIZON KINETICS ASSET MANAGEMENT LLC | 42,503 | $1.1M | 0.0% | 0.3% | -18.9% |
| 23 | Trexquant Investment LP | 34,171 | $908,949 | 0.0% | 0.3% | +94.5% |
| 24 | PRICE T ROWE ASSOCIATES INC /MD/ | 31,663 | $843,000 | 0.0% | 0.2% | +23.4% |
| 25 | Gem Investment Advisors, LLC | 28,012 | $745,119 | 0.5% | 0.2% | -5.8% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.