Form 13-F position report

SYSTEM1 INC CL A NEW(DE)

Reported by MILLENNIUM MANAGEMENT LLC

SST CUSIP 87200P208 Manager CIK 0001273087

First reported at 42,778 shares this quarter.

New
% of reported 13F value < 0.01% This manager · Q2 2025
Shares 42,778 Quarter-end amount reported
Reported value $236,562 Fair value at quarter end
Consecutive quarters held 1 Through Q2 2025

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Reported position value by quarter
Date Holding Value
2025-06-30 236562
2025-09-30 271469
2025-12-31 138960
2026-03-31 98509
2026-06-30 0

Quarterly position history

How this manager's reported quarter-end position changed over time.

5 quarters
Quarterly reported position history for SYSTEM1 INC CL A NEW(DE) held by MILLENNIUM MANAGEMENT LLC.
Quarter Activity Shares Change % of reported 13F Reported value Filed Source filing
Q2 2026 Reduced 0 -32,619 (-100.0%) 0 $0 2026-08-14
Q1 2026 Reduced 32,619 -2,830 (-8.0%) < 0.01% $98,509 2026-05-15
Q4 2025 Reduced 35,449 -3,112 (-8.1%) < 0.01% $138,960 2026-02-17
Q3 2025 Reduced 38,561 -4,217 (-9.9%) < 0.01% $271,469 2025-11-14
Q2 2025 New 42,778 +42,778 (0.0%) < 0.01% $236,562 2025-08-14

Who else reported the position

36 managers reported SYSTEM1 INC CL A NEW(DE) for Q2 2025.

Managers reporting SYSTEM1 INC CL A NEW(DE) in Q2 2025.
Manager Activity Shares Change % of reported 13F Reported value Tenure
CANNAE HOLDINGS INC New 2,701,279 +2,701,279 1.82% $14,938,073 1 qtr
Bank of America Corporation New 174,289 +174,289 < 0.01% $963,818 1 qtr
Cerity Partners LLC New 109,286 +109,286 < 0.01% $604,351 1 qtr
VANGUARD GROUP INC New 47,306 +47,306 < 0.01% $261,602 1 qtr
MILLENNIUM MANAGEMENT LLC This report New 42,778 +42,778 < 0.01% $236,562 1 qtr
BlackRock Inc New 39,122 +39,122 < 0.01% $216,345 1 qtr
JANE STREET GROUP LLC New 31,681 +31,681 < 0.01% $175,196 1 qtr
GEODE CAPITAL MANAGEMENT LLC New 21,530 +21,530 < 0.01% $119,094 1 qtr
SUSQUEHANNA INTERNATIONAL GROUP LLP New 12,374 +12,374 < 0.01% $68,428 1 qtr
RENAISSANCE TECHNOLOGIES LLC New 12,020 +12,020 < 0.01% $66,471 1 qtr
Premium adds each manager's conviction percentile across reporting peers.
Filing details and methodology As reported
Report period
June 30, 2025
Filed
August 14, 2025
Filing type
13F-HR
Position type
CL A COM

Voting authority reported

Sole
42,778
Shared
0
None
0

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.