System1 SST Institutional Ownership

NYSE SST

$4.41 -0.59 (-11.72%)

As of: Sep 9, 2026 · 3:59 PM EDT

Institutions by Trading Activity

22 Institutions

Increased 11 50.0%

Unchanged 6 27.3%

Reduced 5 22.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

7.32%

▼-2.90 pp QoQ

Shares Held by Institutions

597.94K

of 8.16Mn outstanding

▲+52.58% QoQ

Shares Outstanding

8.16Mn

7.57Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▼-3 vs prior quarter

Net Shares Added (QoQ)

+206.06K

accumulated since last quarter

Value of Holdings

$2.27Mn

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

System1, Inc. (NYSE:SST) is held by 22 institutional investors per 13F filings through June 2026.

These investors collectively held 7.3% of System1's outstanding shares in June 2026, down from 10.2% in March 2026.
Their total shares held in SST increased 52.58% quarter over quarter, and separately, investors owning System1 decreased 38.89% from a year ago.
Of these 22 holders, 11 added to their stakes in System1, 5 trimmed positions, and 6 made no changes.
Combined, these investors held 597.94K shares in SST for June 2026, up by 206.06K shares quarter on quarter, and down 2.64Mn shares year over year.
Bank Of America Corp /De/ leads ownership in SST with 161.51K shares as of June 30, 2026, equal to 1.98% of outstanding shares.
The largest buyers of System1 for the quarter ending June 2026 were VANGUARD CAPITAL MANAGEMENT LLC (90.44K), Crescent Grove Advisors, LLC (75.54K), BlackRock, Inc. (19.11K), Morgan Stanley (13.13K), Leonteq Securities AG (12.5K).
Leading sellers of System1 shares for the quarter ending June 2026 were GEODE CAPITAL MANAGEMENT, LLC (11.32K), Jpmorgan Chase & Co (5.85K), UBS Group AG (706), GROUP ONE TRADING LLC (190), Bank Of America Corp /De/ (6).
Business Quant data shows the 10 biggest positions in System1 as of June 2026 are held by Bank Of America Corp /De/ (161.51K), VANGUARD CAPITAL MANAGEMENT LLC (127.58K), Cerity Partners LLC (116.84K), Crescent Grove Advisors, LLC (75.54K), BlackRock, Inc. (43.35K), Morgan Stanley (13.13K), GEODE CAPITAL MANAGEMENT, LLC (12.52K), Leonteq Securities AG (12.5K), PRICE T ROWE ASSOCIATES INC /MD/ (11.73K), State Street Corp (11.5K).

Form 13F Holdings

22 Institutional Holders

Report period 30 Jun, 2026

Total shares held 597.94K

Of outstanding 7.32%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Bank Of America Corp /De/	0000070858	161,513	1.98%	▼6	0.00%	$373.10K
2	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	127,576	1.56%	▲90,444	+243.57%	$294.70K
3	Cerity Partners LLC	0001566475	116,844	1.43%	0	0.00%	$269.91K
4	Crescent Grove Advisors, LLC	0001713520	75,545	0.93%	▲75,545	0.00%	$174.51K
5	BlackRock, Inc.	0002012383	43,353	0.53%	▲19,106	+78.80%	$100.15K
6	Morgan Stanley	0000895421	13,134	0.16%	▲13,134	0.00%	$30.34K
7	GEODE CAPITAL MANAGEMENT, LLC	0001214717	12,519	0.15%	▼11,320	-47.49%	$28.93K
8	Leonteq Securities AG	0001535950	12,500	0.15%	▲12,500	0.00%	$28.88K
9	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	11,731	0.14%	▲11,731	0.00%	$28
10	State Street Corp	0000093751	11,502	0.14%	0	0.00%	$26.57K
11	VANGUARD FIDUCIARY TRUST CO	0000933478	9,141	0.11%	0	0.00%	$21.12K
12	Royal Bank Of Canada	0001000275	1,314	0.02%	▲1,275	+3,269.23%	$3.00K
13	UBS Group AG	0001610520	618	0.01%	▼706	-53.32%	$1.43K
14	JONES FINANCIAL COMPANIES LLLP	0000815917	366	0.00%	▲366	0.00%	$919
15	BNP PARIBAS FINANCIAL MARKETS	0001166588	86	0.00%	0	0.00%	$199
16	SBI Securities Co., Ltd.	0001851815	60	0.00%	0	0.00%	$139
17	Jpmorgan Chase & Co	0000019617	42	0.00%	▼5,848	-99.29%	$102
18	OSAIC HOLDINGS, INC.	0001677044	35	0.00%	0	0.00%	$80
19	GROUP ONE TRADING LLC	0000932540	33	0.00%	▼190	-85.20%	$76
20	MERCER GLOBAL ADVISORS INC /ADV	0000853758	16	0.00%	▲16	0.00%	$37

Showing 1 to 20 of 22 holders