CAMBRIDGE, MA
FULCRUM THERAPEUTICS, INC.FULC— Latest position per institution from SEC 13F filings
15
Institutional holders
82.79M
Total shares held
449.83M
Estimated value
4.14M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
8.82M
Value
32.30M
Filed
Jun 30, 2026
ECOR1 CAPITAL, LLC
CIK 1587114
Shares
6.55M
Value
23.97M
Filed
Jun 30, 2026
TANG CAPITAL MANAGEMENT LLC
CIK 1232621
Shares
6.52M
Value
23.87M
Filed
Jun 30, 2026
RA CAPITAL MANAGEMENT, L.P.
CIK 1346824
Shares
6.05M
Value
46.43M
Filed
Mar 31, 2026
RTW INVESTMENTS, LP
CIK 1493215
Shares
5.85M
Value
36.24M
Filed
Jun 30, 2024
NANTAHALA CAPITAL MANAGEMENT, LLC
CIK 1472322
Shares
5.48M
Value
20.04M
Filed
Jun 30, 2026
TCG CROSSOVER MANAGEMENT, LLC
CIK 1839948
Shares
5.25M
Value
40.27M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
4.80M
Value
29.75M
Filed
Jun 30, 2024
MONTANOVA CAPITAL, LLC
CIK 1569064
Shares
3.68M
Value
13.47M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
3.56M
Value
40.26M
Filed
Dec 31, 2025
BRAIDWELL LP
CIK 1920938
Shares
3.13M
Value
24.04M
Filed
Mar 31, 2026
D. E. SHAW & CO., INC.
CIK 1009207
Shares
3.04M
Value
11.14M
Filed
Jun 30, 2026
COWEN AND COMPANY, LLC
CIK 48966
Shares
2.97M
Value
18.38M
Filed
Jun 30, 2024
CITADEL ADVISORS LLC
CIK 1423053
Shares
2.94M
Value
10.77M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.70M
Value
9.87M
Filed
Jun 30, 2026
SIREN, L.L.C.
CIK 2005245
Shares
2.35M
Value
18.02M
Filed
Mar 31, 2026
TRV GP IV, LLC
CIK 1688325
Shares
2.34M
Value
8.37M
Filed
Sep 30, 2024
JANE STREET GROUP, LLC
CIK 1595888
Shares
2.29M
Value
8.37M
Filed
Jun 30, 2026
FIRST TURN MANAGEMENT, LLC
CIK 1993440
Shares
2.26M
Value
17.30M
Filed
Mar 31, 2026
ABERDEEN GROUP PLC
CIK 1716774
Shares
2.21M
Value
16.97M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 8.82M | 32.30M | Jun 30, 2026 |
| 2 | ECOR1 CAPITAL, LLC | 1587114 | 6.55M | 23.97M | Jun 30, 2026 |
| 3 | TANG CAPITAL MANAGEMENT LLC | 1232621 | 6.52M | 23.87M | Jun 30, 2026 |
| 4 | RA CAPITAL MANAGEMENT, L.P. | 1346824 | 6.05M | 46.43M | Mar 31, 2026 |
| 5 | RTW INVESTMENTS, LP | 1493215 | 5.85M | 36.24M | Jun 30, 2024 |
| 6 | NANTAHALA CAPITAL MANAGEMENT, LLC | 1472322 | 5.48M | 20.04M | Jun 30, 2026 |
| 7 | TCG CROSSOVER MANAGEMENT, LLC | 1839948 | 5.25M | 40.27M | Mar 31, 2026 |
| 8 | BLACKROCK FINANCE, INC. | 1364742 | 4.80M | 29.75M | Jun 30, 2024 |
| 9 | MONTANOVA CAPITAL, LLC | 1569064 | 3.68M | 13.47M | Jun 30, 2026 |
| 10 | VANGUARD GROUP INC | 102909 | 3.56M | 40.26M | Dec 31, 2025 |
| 11 | BRAIDWELL LP | 1920938 | 3.13M | 24.04M | Mar 31, 2026 |
| 12 | D. E. SHAW & CO., INC. | 1009207 | 3.04M | 11.14M | Jun 30, 2026 |
| 13 | COWEN AND COMPANY, LLC | 48966 | 2.97M | 18.38M | Jun 30, 2024 |
| 14 | CITADEL ADVISORS LLC | 1423053 | 2.94M | 10.77M | Jun 30, 2026 |
| 15 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.70M | 9.87M | Jun 30, 2026 |
| 16 | SIREN, L.L.C. | 2005245 | 2.35M | 18.02M | Mar 31, 2026 |
| 17 | TRV GP IV, LLC | 1688325 | 2.34M | 8.37M | Sep 30, 2024 |
| 18 | JANE STREET GROUP, LLC | 1595888 | 2.29M | 8.37M | Jun 30, 2026 |
| 19 | FIRST TURN MANAGEMENT, LLC | 1993440 | 2.26M | 17.30M | Mar 31, 2026 |
| 20 | ABERDEEN GROUP PLC | 1716774 | 2.21M | 16.97M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.