SOUTH SAN FRANCISCO, CA
CYTOKINETICS INCCYTK— Latest position per institution from SEC 13F filings
15
Institutional holders
132.64M
Total shares held
8.66B
Estimated value
6.63M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
20.09M
Value
1.71B
Filed
Jun 30, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.
CIK 1897612
Shares
18.72M
Value
1.59M
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
14.67M
Value
794.97M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
12.05M
Value
765.54M
Filed
Dec 31, 2025
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
6.93M
Value
590.52M
Filed
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
6.71M
Value
571.78M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
6.49M
Value
553.24M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
6.12M
Value
521.15M
Filed
Jun 30, 2026
FMR LLC
CIK 315066
Shares
5.03M
Value
428.66M
Filed
Jun 30, 2026
AVORO CAPITAL ADVISORS LLC
CIK 1633313
Shares
5M
Value
425.95M
Filed
Jun 30, 2026
BANK OF AMERICA CORP /DE/
CIK 70858
Shares
4.64M
Value
394.92M
Filed
Jun 30, 2026
DARWIN GLOBAL MANAGEMENT, LTD.
CIK 1839209
Shares
4.58M
Value
246.07M
Filed
Jun 30, 2024
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
3.73M
Value
317.73M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
3.71M
Value
316.33M
Filed
Jun 30, 2026
RTW INVESTMENTS, LP
CIK 1493215
Shares
2.86M
Value
243.81M
Filed
Jun 30, 2026
ARMISTICE CAPITAL, LLC
CIK 1601086
Shares
2.73M
Value
232.68M
Filed
Jun 30, 2026
POLAR CAPITAL HOLDINGS PLC
CIK 1837309
Shares
2.25M
Value
191.99M
Filed
Jun 30, 2026
PICTET ASSET MANAGEMENT SA
CIK 1361570
Shares
2.25M
Value
73.47M
Filed
Jun 30, 2023
BOXER CAPITAL, LLC
CIK 1465837
Shares
2.10M
Value
110.88M
Filed
Sep 30, 2024
CITADEL ADVISORS LLC
CIK 1423053
Shares
1.97M
Value
167.55M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 20.09M | 1.71B | Jun 30, 2026 |
| 2 | T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 1897612 | 18.72M | 1.59M | Jun 30, 2026 |
| 3 | BLACKROCK FINANCE, INC. | 1364742 | 14.67M | 794.97M | Jun 30, 2024 |
| 4 | VANGUARD GROUP INC | 102909 | 12.05M | 765.54M | Dec 31, 2025 |
| 5 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 6.93M | 590.52M | Jun 30, 2026 |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 6.71M | 571.78M | Jun 30, 2026 |
| 7 | STATE STREET CORP | 93751 | 6.49M | 553.24M | Jun 30, 2026 |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 6.12M | 521.15M | Jun 30, 2026 |
| 9 | FMR LLC | 315066 | 5.03M | 428.66M | Jun 30, 2026 |
| 10 | AVORO CAPITAL ADVISORS LLC | 1633313 | 5M | 425.95M | Jun 30, 2026 |
| 11 | BANK OF AMERICA CORP /DE/ | 70858 | 4.64M | 394.92M | Jun 30, 2026 |
| 12 | DARWIN GLOBAL MANAGEMENT, LTD. | 1839209 | 4.58M | 246.07M | Jun 30, 2024 |
| 13 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 3.73M | 317.73M | Jun 30, 2026 |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 3.71M | 316.33M | Jun 30, 2026 |
| 15 | RTW INVESTMENTS, LP | 1493215 | 2.86M | 243.81M | Jun 30, 2026 |
| 16 | ARMISTICE CAPITAL, LLC | 1601086 | 2.73M | 232.68M | Jun 30, 2026 |
| 17 | POLAR CAPITAL HOLDINGS PLC | 1837309 | 2.25M | 191.99M | Jun 30, 2026 |
| 18 | PICTET ASSET MANAGEMENT SA | 1361570 | 2.25M | 73.47M | Jun 30, 2023 |
| 19 | BOXER CAPITAL, LLC | 1465837 | 2.10M | 110.88M | Sep 30, 2024 |
| 20 | CITADEL ADVISORS LLC | 1423053 | 1.97M | 167.55M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.