System1, Inc. (SST) Institutional Ownership

Institutions by Trading Activity

8,054,000Shares Outstanding

815,644Shares held by institutions

$3,221,794Value of institutional holdings

10.13%Institutional ownership %

-75.36%Shares Changed QoQ

23No. of institutional investors

System1, Inc. (NYSE:SST) has 23 institutional investors with active 13F positions as of December 2025.

Their combined ownership stood at 10.1% of outstanding shares in December 2025, down from 41.6% in September 2025.
They decreased total shares held in System1 by -75.36% from last quarter, and the number of investors in SST decreased 61.67% annually.
Activity in SST broke down as 5 buyers, 13 sellers, and 5 unchanged among 23 total holders.
The aggregate institutional position in System1 amounted to 815.64K shares as of December 2025, down by 2.5Mn shares quarter on quarter, and down 34.7Mn shares year over year.
As of December 31, 2025, the biggest holder of System1 is Cannae Holdings, Inc. at 356.8K shares, representing 4.43% of shares outstanding.
Top purchasers of SST stock for the quarter ending December 2025 included Physician Wealth Advisors, Inc. (301).
System1's 3 largest shareholders as of December 2025 include Cannae Holdings, Inc. (356.8K), Physician Wealth Advisors, Inc. (301), Farther Finance Advisors, LLC (150) per Business Quant data.

815,644 Total Shares Held

Rows:

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Cannae Holdings, Inc.	31 Dec, 2025	356,797	-2,344,482	-86.79%	$1,398,644.00
Bank Of America Corp /De/	31 Dec, 2025	161,546	-161,594	-50.01%	$633,260.00
Cerity Partners LLC	31 Dec, 2025	116,844	-23	-0.02%	$458,028.00
VANGUARD GROUP INC	31 Dec, 2025	46,933	0	0.00%	$183,977.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	35,449	-3,112	-8.07%	$138,960.00
BlackRock, Inc.	31 Dec, 2025	24,247	37	0.15%	$95,049.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	18,620	1,500	8.76%	$72,990.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	14,363	-18	-0.13%	$56,327.00
CITADEL ADVISORS LLC	31 Dec, 2025	12,759	2,703	26.88%	$50,015.00
XTX Topco Ltd	31 Dec, 2025	12,376	12,376	0.00%	$48,514.00
State Street Corp	31 Dec, 2025	11,502	0	0.00%	$45,088.00
FMR LLC	31 Dec, 2025	1,105	-815	-42.45%	$4,332.00
Tower Research Capital LLC (TRC)	31 Dec, 2025	988	348	54.38%	$3,873.00
GROUP ONE TRADING LLC	31 Dec, 2025	663	-58	-8.04%	$2,599.00
Morgan Stanley	31 Dec, 2025	439	-656	-59.91%	$1,721.00
UBS Group AG	31 Dec, 2025	417	-19	-4.36%	$1,635.00
Farther Finance Advisors, LLC	31 Dec, 2025	150	0	0.00%	$588.00
CWM, LLC	31 Dec, 2025	115	-13	-10.16%	$0.00
Royal Bank Of Canada	31 Dec, 2025	108	-1,286	-92.25%	$0.00
BNP PARIBAS FINANCIAL MARKETS	31 Dec, 2025	86	-36	-29.51%	$337.00

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