MARINA DEL REY, CA
SYSTEM1, INC.SST— Latest position per institution from SEC 13F filings
15
Institutional holders
983.95K
Total shares held
3.26M
Estimated value
49.20K
Avg. position size
CANNAE HOLDINGS, INC.
CIK 1704720
Shares
356.80K
Value
1.08M
Filed
Mar 31, 2026
BANK OF AMERICA CORP /DE/
CIK 70858
Shares
161.52K
Value
487.79K
Filed
Mar 31, 2026
CERITY PARTNERS LLC
CIK 1566475
Shares
116.84K
Value
352.87K
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
46.93K
Value
183.98K
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
37.13K
Value
112.14K
Filed
Mar 31, 2026
MARSHALL WACE, LLP
CIK 1318757
Shares
36.27K
Value
255.35K
Filed
Sep 30, 2025
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
32.62K
Value
98.51K
Filed
Mar 31, 2026
JANE STREET GROUP, LLC
CIK 1595888
Shares
31.68K
Value
175.20K
Filed
Jun 30, 2025
BLACKROCK, INC.
CIK 2012383
Shares
24.25K
Value
73.23K
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
23.84K
Value
72.01K
Filed
Mar 31, 2026
NINE MASTS CAPITAL LTD
CIK 1569356
Shares
18.55K
Value
56.02K
Filed
Mar 31, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
18.32K
Value
55.33K
Filed
Mar 31, 2026
CITADEL ADVISORS LLC
CIK 1423053
Shares
12.76K
Value
50.02K
Filed
Dec 31, 2025
XTX TOPCO LTD
CIK 1828301
Shares
12.38K
Value
48.51K
Filed
Dec 31, 2025
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
12.37K
Value
68.43K
Filed
Jun 30, 2025
HRT FINANCIAL LP
CIK 1475597
Shares
11.87K
Value
65.00
Filed
Jun 30, 2025
STATE STREET CORP
CIK 93751
Shares
11.50K
Value
34.74K
Filed
Mar 31, 2026
VANGUARD FIDUCIARY TRUST CO
CIK 933478
Shares
9.14K
Value
27.61K
Filed
Mar 31, 2026
TOWER RESEARCH CAPITAL LLC (TRC)
CIK 1533421
Shares
7.33K
Value
22.14K
Filed
Mar 31, 2026
SUMMIT SECURITIES GROUP LLC
CIK 1531593
Shares
1.85K
Value
10.22K
Filed
Jun 30, 2025
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | CANNAE HOLDINGS, INC. | 1704720 | 356.80K | 1.08M | Mar 31, 2026 |
| 2 | BANK OF AMERICA CORP /DE/ | 70858 | 161.52K | 487.79K | Mar 31, 2026 |
| 3 | CERITY PARTNERS LLC | 1566475 | 116.84K | 352.87K | Mar 31, 2026 |
| 4 | VANGUARD GROUP INC | 102909 | 46.93K | 183.98K | Dec 31, 2025 |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 37.13K | 112.14K | Mar 31, 2026 |
| 6 | MARSHALL WACE, LLP | 1318757 | 36.27K | 255.35K | Sep 30, 2025 |
| 7 | MILLENNIUM MANAGEMENT LLC | 1273087 | 32.62K | 98.51K | Mar 31, 2026 |
| 8 | JANE STREET GROUP, LLC | 1595888 | 31.68K | 175.20K | Jun 30, 2025 |
| 9 | BLACKROCK, INC. | 2012383 | 24.25K | 73.23K | Mar 31, 2026 |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 23.84K | 72.01K | Mar 31, 2026 |
| 11 | NINE MASTS CAPITAL LTD | 1569356 | 18.55K | 56.02K | Mar 31, 2026 |
| 12 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 18.32K | 55.33K | Mar 31, 2026 |
| 13 | CITADEL ADVISORS LLC | 1423053 | 12.76K | 50.02K | Dec 31, 2025 |
| 14 | XTX TOPCO LTD | 1828301 | 12.38K | 48.51K | Dec 31, 2025 |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 12.37K | 68.43K | Jun 30, 2025 |
| 16 | HRT FINANCIAL LP | 1475597 | 11.87K | 65.00 | Jun 30, 2025 |
| 17 | STATE STREET CORP | 93751 | 11.50K | 34.74K | Mar 31, 2026 |
| 18 | VANGUARD FIDUCIARY TRUST CO | 933478 | 9.14K | 27.61K | Mar 31, 2026 |
| 19 | TOWER RESEARCH CAPITAL LLC (TRC) | 1533421 | 7.33K | 22.14K | Mar 31, 2026 |
| 20 | SUMMIT SECURITIES GROUP LLC | 1531593 | 1.85K | 10.22K | Jun 30, 2025 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.