# Seaport Entertainment Group (SEG) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 812215200
Page URL: https://superinvestorclub.com/stock/SEG
Last updated: 2026-07-08T12:41:20.415Z

## Summary

As of the most recent 13F filing period, Seaport Entertainment Group (SEG) is held by 2 tracked superinvestors with an aggregate position value of $127.1M representing 05023780893227 shares.

## Top institutional holders (2)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Bill Ackman](https://superinvestorclub.com/manager/2) | Pershing Square Capital Management | 5023780 | $107.9M | 0.79% | 2026-03-31 |
| 2 | [Kahn Brothers](https://superinvestorclub.com/manager/83) | Kahn Brothers Group | 893227 | $19.2M | 3.40% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2024-09-30: 2 holders, $58.4M aggregate, 0209467335533 shares
- 2025-03-31: 2 holders, $110.5M aggregate, 05023780125230 shares
- 2025-06-30: 1 holders, $93.7M aggregate, 05023780 shares
- 2025-09-30: 2 holders, $128.5M aggregate, 05023780583364 shares
- 2025-12-31: 2 holders, $110.9M aggregate, 05023780586170 shares
- 2026-03-31: 2 holders, $127.1M aggregate, 05023780893227 shares

## Recent congressional trades (0)


## Recent insider transactions (0)


## Citation

When citing, use: "Seaport Entertainment Group (SEG) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/SEG), aggregating SEC 13F, Form 4, and congressional disclosures."