Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in SEG held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Pershing Square Capital Management, L.P. | 5.0M | $107.9M | 0.0% | 39.242% | 0.79% |
| 2 | KAHN BROTHERS GROUP INC /DE/ | 893K | $19.2M | +52.4% | 6.977% | 3.40% |
| 3 | GATE CITY CAPITAL MANAGEMENT, LLC | 689K | $14.8M | +78.9% | 5.386% | 5.76% |
| 4 | Rubric Capital Management LP | 569K | $12.2M | 0.0% | 4.441% | 0.15% |
| 5 | BlackRock, Inc. | 506K | $10.9M | -1.6% | 3.950% | 0.00% |
| 6 | DIMENSIONAL FUND ADVISORS LP | 455K | $9.8M | -12.4% | 3.555% | 0.00% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 328K | $7.0M | β | 2.560% | 0.00% |
| 8 | Cerity Partners LLC | 319K | $6.9M | +24.0% | 2.491% | 0.01% |
| 9 | Solas Capital Management, LLC | 223K | $4.8M | -2.1% | 1.741% | 2.75% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 185K | $4.0M | +3.5% | 1.445% | 0.00% |
| 11 | STATE STREET CORP | 178K | $3.8M | +0.5% | 1.390% | 0.00% |
| 12 | Rangeley Capital, LLC | 154K | $3.3M | 0.0% | 1.199% | 3.49% |
| 13 | GOLDMAN SACHS GROUP INC | 104K | $2.2M | +31.3% | 0.814% | 0.00% |
| 14 | Peapod Lane Capital LLC | 93K | $2.0M | β | 0.723% | 1.62% |
| 15 | RENAISSANCE TECHNOLOGIES LLC | 82K | $1.8M | +123.6% | 0.643% | 0.00% |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 62K | $1.3M | -3.1% | 0.484% | 0.00% |
| 17 | NORTHERN TRUST CORP | 57K | $1.2M | +7.1% | 0.446% | 0.00% |
| 18 | LPL Financial LLC | 53K | $1.1M | +46.2% | 0.412% | 0.00% |
| 19 | HORIZON KINETICS ASSET MANAGEMENT LLC | 52K | $1.1M | -0.2% | 0.410% | 0.01% |
| 20 | Focus Partners Wealth | 596 | $1.1M | -98.8% | 0.005% | 0.00% |
| 21 | VANGUARD FIDUCIARY TRUST CO | 48K | $1.0M | β | 0.377% | 0.00% |
| 22 | O'Keefe Stevens Advisory, Inc. | 48K | $1.0M | +236.4% | 0.372% | 0.25% |
| 23 | LAZARD ASSET MANAGEMENT LLC | 47K | $1.0M | +1.8% | 0.371% | 0.00% |
| 24 | VANGUARD PORTFOLIO MANAGEMENT LLC | 43K | $925K | β | 0.336% | 0.00% |
| 25 | CITADEL ADVISORS LLC | 36K | $782K | -54.5% | 0.284% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in SEG β a direct measure of their conviction.
Filings activity in SEG during Q1 2026, grouped by how each filer changed its position.
7 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 115 | +3.6% | 72.87% | +8.40 pp | $230M | +13% |
| Q4 2025 | 111 | +13% | 64.47% | 7.16 pp | $204M | 10.0% |
| Q3 2025 | 98 | 4.9% | 71.63% | +19.34 pp | $226M | +37% |
| Q2 2025 | 103 | 12% | 52.29% | 16.21 pp | $165M | 24% |
| Q1 2025 | 117 | 6.4% | 68.50% | 16.11 pp | $216M | 19% |
| Q4 2024 | 125 | +9.6% | 84.61% | +42.52 pp | $267M | +101% |
| Q3 2024 | 114 | β | 42.09% | β | $133M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying SEG stock.
Based on Q1 2026 13F filings, institutional ownership of Seaport Entertainment Group Inc. stands at 72.9%, held across 115 reporting institutions.
Pershing Square Capital Management, L.P. is the largest reported institutional holder of SEG, with approximately 5,023,780 shares worth $0.11B as of Q1 2026.
Yes β 3 widely-followed marquee investors appear among the top 25 institutional holders of SEG, including Pershing Square Capital Management, L.P., RENAISSANCE TECHNOLOGIES LLC, CITADEL ADVISORS LLC.
Our composite Smart Money Score for SEG is 72 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
26 institutions opened new positions in SEG during Q1 2026, while 22 fully exited. 68 added to existing positions and 20 trimmed.
SEG institutional ownership rose by 8.40 percentage points quarter-over-quarter, with a net change of +4 holders.
The top 10 institutions account for 85.8% of all reported 13F value in SEG, and the top 25 account for 96.1%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Seaport Entertainment Group Inc. (SEG) Institutional Ownership