Seaport Entertainment SEG Institutional Ownership

NYSE SEG

$25.87 -0.12 (-0.46%)

As of: Sep 10, 2026 · 3:59 PM EDT

Institutions by Trading Activity

119 Institutions

Increased 53 44.5%

Unchanged 41 34.5%

Reduced 25 21.0%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

87.27%

▲+3.01 pp QoQ

Shares Held by Institutions

11.17Mn

of 12.80Mn outstanding

▲+99.69% QoQ

Shares Outstanding

12.80Mn

1.63Mn held outside 13F filers

Institutional Investors

119

filed 13F for Jun 2026

▲+1 vs prior quarter

Net Shares Added (QoQ)

+5.58Mn

accumulated since last quarter

Value of Holdings

$292.16Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Seaport Entertainment Group Inc. (NYSE:SEG) has 119 institutional investors with active 13F positions as of June 2026.

Their combined ownership stood at 87.3% of outstanding shares in June 2026, up from 84.3% in March 2026.
Their total shares held in SEG increased 99.69% from the prior quarter, while the number of investors in Seaport Entertainment increased 16.67% year over year.
Of these 119 holders, 53 added to their stakes in Seaport Entertainment, 25 trimmed positions, and 41 made no changes.
The aggregate institutional position in Seaport Entertainment amounted to 11.17Mn shares as of June 2026, up by 5.58Mn shares quarter on quarter, and up 2.31Mn shares year over year.
As of June 30, 2026, Pershing Square Inc. held the largest stake in Seaport Entertainment with 5.02Mn shares, accounting for 39.24% of total shares outstanding.
Leading buyers of Seaport Entertainment shares for the quarter ending June 2026 were Pershing Square Inc. (5.02Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (341.14K), Sixth Street Partners Management Company, L.P. (63.59K), BlackRock, Inc. (47.49K), GATE CITY CAPITAL MANAGEMENT, LLC (33.8K).
The biggest sellers of Seaport Entertainment for the quarter ending June 2026 included DIMENSIONAL FUND ADVISORS LP (58.58K), RENAISSANCE TECHNOLOGIES LLC (54.3K), LAZARD ASSET MANAGEMENT LLC (32.84K), Solas Capital Management, LLC (10.03K), HORIZON KINETICS ASSET MANAGEMENT LLC (9.94K).
Seaport Entertainment's 10 largest shareholders as of June 2026 include Pershing Square Inc. (5.02Mn), KAHN BROTHERS GROUP INC (893.23K), GATE CITY CAPITAL MANAGEMENT, LLC (723.25K), Rubric Capital Management LP (568.53K), BlackRock, Inc. (553.12K), DIMENSIONAL FUND ADVISORS LP (396.57K), VANGUARD PORTFOLIO MANAGEMENT LLC (384.2K), VANGUARD CAPITAL MANAGEMENT LLC (343.55K), Cerity Partners LLC (314.96K), Solas Capital Management, LLC (212.89K) per Business Quant data.

Form 13F Holdings

119 Institutional Holders

Report period 30 Jun, 2026

Total shares held 11.17Mn

Of outstanding 87.27%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Pershing Square Inc.	0002026053	5,023,780	39.24%	▲5,023,780	0.00%	$133.63Mn
2	KAHN BROTHERS GROUP INC	0001039565	893,227	6.98%	0	0.00%	$19.19Mn
3	GATE CITY CAPITAL MANAGEMENT, LLC	0001705447	723,248	5.65%	▲33,801	+4.90%	$19.24Mn
4	Rubric Capital Management LP	0001687509	568,530	4.44%	0	0.00%	$15.12Mn
5	BlackRock, Inc.	0002012383	553,120	4.32%	▲47,491	+9.39%	$14.71Mn
6	DIMENSIONAL FUND ADVISORS LP	0000354204	396,566	3.10%	▼58,581	-12.87%	$10.55Mn
7	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	384,200	3.00%	▲341,138	+792.20%	$10.22Mn
8	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	343,549	2.68%	▲15,864	+4.84%	$9.14Mn
9	Cerity Partners LLC	0001566475	314,955	2.46%	▼3,964	-1.24%	$8.38Mn
10	Solas Capital Management, LLC	0001604867	212,892	1.66%	▼10,026	-4.50%	$5.66Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	208,136	1.63%	▲23,116	+12.49%	$5.54Mn
12	State Street Corp	0000093751	185,838	1.45%	▲7,857	+4.41%	$4.94Mn
13	Rangeley Capital, LLC	0001517796	153,517	1.20%	0	0.00%	$4.08Mn
14	Goldman Sachs Group Inc	0000886982	117,344	0.92%	▲13,148	+12.62%	$3.12Mn
15	Peapod Lane Capital LLC	0002050979	109,851	0.86%	▲17,345	+18.75%	$2.92Mn
16	Sixth Street Partners Management Company, L.P.	0001812095	63,587	0.50%	▲63,587	0.00%	$1.69Mn
16	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	63,587	0.50%	▲1,581	+2.55%	$1.69Mn
17	Northern Trust Corp	0000073124	60,461	0.47%	▲3,308	+5.79%	$1.61Mn
18	LPL Financial LLC	0001403438	51,711	0.40%	▼1,055	-2.00%	$1.38Mn
19	AQR CAPITAL MANAGEMENT LLC	0001167557	51,134	0.40%	▲27,904	+120.12%	$1.36Mn

Showing 1 to 20 of 119 holders