BRANFORD, CT
QUANTUM-SI INCQSI— Latest position per institution from SEC 13F filings
15
Institutional holders
74.79M
Total shares held
69.63M
Estimated value
3.74M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
13.41M
Value
10.38M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
9.61M
Value
10.57M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
7.02M
Value
5.43M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
7M
Value
7.35M
Filed
Jun 30, 2024
ARK INVESTMENT MANAGEMENT LLC
CIK 1697748
Shares
6.88M
Value
5.32M
Filed
Mar 31, 2026
SUMITOMO MITSUI TRUST GROUP, INC.
CIK 1475365
Shares
4.39M
Value
3.40M
Filed
Mar 31, 2026
AMOVA ASSET MANAGEMENT AMERICAS, INC.
CIK 1480751
Shares
4.39M
Value
3.43M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
3.84M
Value
2.97M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
3.77M
Value
2.92M
Filed
Mar 31, 2026
GLENVIEW CAPITAL MANAGEMENT, LLC
CIK 1138995
Shares
2.42M
Value
4.32M
Filed
Jun 30, 2023
AQR CAPITAL MANAGEMENT LLC
CIK 1167557
Shares
2.39M
Value
1.85M
Filed
Mar 31, 2026
FORESITE CAPITAL MANAGEMENT IV, LLC
CIK 1704132
Shares
1.77M
Value
3.12M
Filed
Mar 31, 2023
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
1.52M
Value
1.18M
Filed
Mar 31, 2026
NORTHERN TRUST CORP
CIK 73124
Shares
1.26M
Value
975.78K
Filed
Mar 31, 2026
VANGUARD FIDUCIARY TRUST CO
CIK 933478
Shares
1.12M
Value
864.75K
Filed
Mar 31, 2026
JACOBS LEVY EQUITY MANAGEMENT, INC
CIK 884414
Shares
939.42K
Value
828.76K
Filed
Sep 30, 2024
FORESITE CAPITAL MANAGEMENT V, LLC
CIK 1792206
Shares
924.40K
Value
1.65M
Filed
Jun 30, 2023
FOSUN INTERNATIONAL LTD
CIK 1447884
Shares
743.93K
Value
575.81K
Filed
Mar 31, 2026
SECURITY BENEFIT LIFE INSURANCE CO /KS/
CIK 869772
Shares
715.48K
Value
1.26M
Filed
Mar 31, 2023
RUBRIC CAPITAL MANAGEMENT LP
CIK 1687509
Shares
672.38K
Value
1.23M
Filed
Dec 31, 2022
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 13.41M | 10.38M | Mar 31, 2026 |
| 2 | VANGUARD GROUP INC | 102909 | 9.61M | 10.57M | Dec 31, 2025 |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 7.02M | 5.43M | Mar 31, 2026 |
| 4 | BLACKROCK FINANCE, INC. | 1364742 | 7M | 7.35M | Jun 30, 2024 |
| 5 | ARK INVESTMENT MANAGEMENT LLC | 1697748 | 6.88M | 5.32M | Mar 31, 2026 |
| 6 | SUMITOMO MITSUI TRUST GROUP, INC. | 1475365 | 4.39M | 3.40M | Mar 31, 2026 |
| 7 | AMOVA ASSET MANAGEMENT AMERICAS, INC. | 1480751 | 4.39M | 3.43M | Mar 31, 2026 |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 3.84M | 2.97M | Mar 31, 2026 |
| 9 | STATE STREET CORP | 93751 | 3.77M | 2.92M | Mar 31, 2026 |
| 10 | GLENVIEW CAPITAL MANAGEMENT, LLC | 1138995 | 2.42M | 4.32M | Jun 30, 2023 |
| 11 | AQR CAPITAL MANAGEMENT LLC | 1167557 | 2.39M | 1.85M | Mar 31, 2026 |
| 12 | FORESITE CAPITAL MANAGEMENT IV, LLC | 1704132 | 1.77M | 3.12M | Mar 31, 2023 |
| 13 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 1.52M | 1.18M | Mar 31, 2026 |
| 14 | NORTHERN TRUST CORP | 73124 | 1.26M | 975.78K | Mar 31, 2026 |
| 15 | VANGUARD FIDUCIARY TRUST CO | 933478 | 1.12M | 864.75K | Mar 31, 2026 |
| 16 | JACOBS LEVY EQUITY MANAGEMENT, INC | 884414 | 939.42K | 828.76K | Sep 30, 2024 |
| 17 | FORESITE CAPITAL MANAGEMENT V, LLC | 1792206 | 924.40K | 1.65M | Jun 30, 2023 |
| 18 | FOSUN INTERNATIONAL LTD | 1447884 | 743.93K | 575.81K | Mar 31, 2026 |
| 19 | SECURITY BENEFIT LIFE INSURANCE CO /KS/ | 869772 | 715.48K | 1.26M | Mar 31, 2023 |
| 20 | RUBRIC CAPITAL MANAGEMENT LP | 1687509 | 672.38K | 1.23M | Dec 31, 2022 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.