DOSSIER · 13F Holders · Q1 2026
SST

SYSTEM1 INC

25 institutions still hold SYSTEM1 INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 87200P208·25 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$1M
visible holders
Holders
25
filers reporting
Concentration
33.21%
BANK OF AMERICA CORP /DE/ #1
top holder share
AI Holders Summary · Q1 2026

25 institutions reported SST in Q1 2026. BANK OF AMERICA CORP /DE/ leads at 33.2% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BANK OF AMERICA CORP /DE/
CIK 0000070858
$488K162K0.00%Q1 2026
02
Cerity Partners LLC
CIK 0001566475
$353K117K0.00%Q1 2026
03
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$112K37K0.00%Q1 2026
04
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$99K33K0.00%Q1 2026
05
BlackRock, Inc.
CIK 0002012383
$73K24K0.00%Q1 2026
06
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$72K24K0.00%Q1 2026
07
NINE MASTS CAPITAL Ltd
CIK 0001569356
$56K19K0.01%Q1 2026
08
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$55K18K0.00%Q1 2026
09
CITADEL ADVISORS LLC
CIK 0001423053
$50K13K0.00%Q4 2025
10
STATE STREET CORP
CIK 0000093751
$35K12K0.00%Q1 2026
11
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$28K9K0.00%Q1 2026
12
Tower Research Capital LLC (TRC)
CIK 0001533421
$22K7K0.00%Q1 2026
13
JPMORGAN CHASE & CO
CIK 0000019617
$18K6K0.00%Q1 2026
14
UBS Group AG
CIK 0001610520
$4K1K0.00%Q1 2026
15
Vanguard Global Advisers, LLC
CIK 0001811242· Index
$2K6600.00%Q1 2026
16
GROUP ONE TRADING LLC
CIK 0000932540
$6732230.00%Q1 2026
17
CWM, LLC
CIK 0001535847
$3441140.00%Q1 2026
18
Strategic Wealth Partners, Ltd.
CIK 0001720777
$3021000.00%Q1 2026
19
SHP Wealth Management
CIK 0001807060
$3021000.00%Q1 2026
20
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$260860.00%Q1 2026
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Insiders at SYSTEM1 INC
Weinrot Daniel JKidambi TridiveshCoppola BrianSestanovich ElizabethCee Holdings TrustCaswell Ryan R.Civantos JohnHorn Caroline