Seaport Entertainment Group Inc. SEG
CIK 0002009684 · CUSIP 812215200
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | Pershing Square Capital Management, L.P. CIK 1336528 · Amended · View history | $140.41M 5,023,780 shares | 1.11% | +2.93M(+139.80%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 02 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $16.58M 593,243 shares | 0.00% | +321.45K(+118.30%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 03 | Rubric Capital Management LP CIK 1687509 · View history | $16.03M 573,408 shares | 0.29% | +296.47K(+107.00%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 04 | Ancora Advisors LLC CIK 1446114 · View history | $12.09M 432,689 shares | 0.27% | +172.94K(+66.60%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 05 | VANGUARD GROUP INC CIK 102909 · View history | $11.29M 403,917 shares | 0.00% | +208.38K(+106.60%)Added | SEC filing ↗ Feb 11, 2025 | ▾ |
| 06 | Beryl Capital Management LLC CIK 1719307 · View history | $9.41M 336,628 shares | 2.13% | -43.72K(-11.50%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 07 | BlackRock, Inc. CIK 2012383 · View history | $9.12M 326,296 shares | 0.00% | +173.51K(+113.60%)Added | SEC filing ↗ Feb 7, 2025 | ▾ |
| 08 | HARRIS ASSOCIATES L P CIK 813917 · View history | $5.51M 197,290 shares | 0.01% | -18.15K(-8.40%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 09 | Russell Investments Group, Ltd. CIK 1692234 · View history | $5.37M 192,061 shares | 0.01% | +161.97K(+538.30%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 10 | Rangeley Capital, LLC CIK 1517796 · View history | $4.45M 159,270 shares | 4.24% | — | SEC filing ↗ Feb 12, 2025 | ▾ |
| 11 | STATE STREET CORP CIK 93751 · View history | $3.62M 129,482 shares | 0.00% | +66.04K(+104.10%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 12 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $3.50M 125,279 shares | 0.00% | +85.03K(+211.30%)Added | SEC filing ↗ Feb 12, 2025 | ▾ |
| 13 | Potrero Capital Research LLC CIK 1536630 · View history | $2.75M 98,318 shares | 1.16% | 0(0.00%)Unchanged | SEC filing ↗ Feb 14, 2025 | ▾ |
| 14 | Phoenix Financial Ltd. CIK 1679543 · View history | $2.67M 95,484 shares | 0.04% | +13.08K(+15.90%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 15 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $2.67M 95,421 shares | 0.00% | +95.42KNew | SEC filing ↗ Feb 13, 2025 | ▾ |
| 16 | JPMORGAN CHASE & CO CIK 19617 · View history | $2.20M 78,845 shares | 0.00% | +21.22K(+36.80%)Added | SEC filing ↗ Feb 12, 2025 | ▾ |
| 17 | Alberta Investment Management Corp CIK 1463559 · View history | $1.85M 66,352 shares | 0.01% | +38.69K(+139.80%)Added | SEC filing ↗ Feb 3, 2025 | ▾ |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history | $1.56M 55,773 shares | 0.00% | +25.32K(+83.10%)Added | SEC filing ↗ Feb 6, 2025 | ▾ |
| 19 | HORIZON KINETICS ASSET MANAGEMENT LLC CIK 1056823 · View history | $1.54M 55,020 shares | 0.02% | -423(-0.80%)Reduced | SEC filing ↗ Feb 10, 2025 | ▾ |
| 20 | MORGAN STANLEY CIK 895421 · Amended · View history | $1.44M 51,439 shares | 0.00% | +17.16K(+50.10%)Added | SEC filing ↗ May 15, 2025 | ▾ |
Showing 20 / 128 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 128 reporting institutions.
This page includes 20 of 128 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 128 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"812215200","quarter":"2024Q4","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.