Cytokinetics Inc
CYTK- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001061983
In the last 90 days, Cytokinetics Inc insiders filed 0 open-market purchases and 16 sales; 482 institutions reported holding it in 13F filings for Q2 2026, worth $13.7B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Cytokinetics Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 441
- +17 vs. Q4 2025
- Shares held
- 146.2M
- +19.5M (+15.4%) vs. Q4 2025
- Total value
- $9.63B
- +$1.58B (+19.7%) vs. Q4 2025
- New holders
- 80
- 176 more added
- Sold out
- 63
- 135 more reduced
7 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting CYTK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 482 | $13.7B |
| Q1 2026 | 441 | $9.63B |
| Q4 2025 | 431 | $8.87B |
| Q3 2025 | 381 | $7.75B |
| Q2 2025 | 312 | $4.55B |
| Q1 2025 | 356 | $5.48B |
| Q4 2024 | 347 | $6.18B |
| Q3 2024 | 348 | $7.20B |
| Q2 2024 | 344 | $7.34B |
| Q1 2024 | 390 | $8.26B |
| Q4 2023 | 347 | $9.54B |
| Q3 2023 | 251 | $3.22B |
| Q2 2023 | 253 | $3.55B |
| Q1 2023 | 263 | $3.83B |
| Q4 2022 | 278 | $4.88B |
| Q3 2022 | 276 | $5.08B |
| Q2 2022 | 263 | $4.16B |
| Q1 2022 | 240 | $3.52B |
| Q4 2021 | 250 | $4.16B |
| Q3 2021 | 211 | $3.22B |
| Q2 2021 | 191 | $1.50B |
| Q1 2021 | 193 | $1.74B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Cytokinetics Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Alyeska Investment Group, L.P. | 150,000 | $9.89M | 0.03% | +150,000 | New |
| Retirement Systems of Alabama | 149,891 | $9.88M | 0.03% | +3,223+2.2% | Added |
| First Trust Advisors LP | 145,890 | $9.62M | 0.01% | +18,366+14.4% | Added |
| California State Teachers Retirement System | 136,599 | $9.00M | 0.01% | +29,275+27.3% | Added |
| Emerald Mutual Fund Advisers Trust | 135,464 | $8.93M | 0.43% | +135,464 | New |
| StemPoint Capital LP | 129,577 | $8.54M | 1.64% | −17,401−11.8% | Reduced |
| Impax Asset Management Group plc | 125,000 | $8.24M | 0.06% | +25,000+25.0% | Added |
| Royce & Associates LP | 124,297 | $8.19M | 0.08% | −20,129−13.9% | Reduced |
| MetLife Investment Management | 123,329 | $8.13M | 0.04% | +1,419+1.2% | Added |
| Algert Global LLC | 117,120 | $7.72M | 0.12% | +65,810+128.3% | Added |
| New York State Teachers Retirement System | 110,505 | $7.28M | 0.01% | −3,995−3.5% | Reduced |
| Creative Planning | 107,760 | $7.10M | 0.00% | +10,821+11.2% | Added |
| Vanguard Asset Management, Ltd | 106,994 | $7.05M | 0.01% | +106,994 | New |
| Boothbay Fund Management, LLC | 104,445 | $6.88M | 0.16% | +47,992+85.0% | Added |
| Exome Asset Management LLC | 103,718 | $6.84M | 4.02% | −21,031−16.9% | Reduced |
| Peregrine Capital Management LLC | 103,626 | $6.83M | 0.25% | −4,436−4.1% | Reduced |
| Schonfeld Strategic Advisors LLC | 101,565 | $6.69M | 0.05% | +101,565 | New |
| Boxer Capital Management, LLC | 100,000 | $6.59M | 0.87% | 00.0% | Unchanged |
| Monashee Investment Management LLC | 100,000 | $6.59M | 3.59% | +25,000+33.3% | Added |
| Millennium Management LLC | 97,959 | $6.46M | 0.00% | −127,497−56.6% | Reduced |
| Dimensional Fund Advisors LP | 94,503 | $6.23M | 0.00% | +40,574+75.2% | Added |
| Deeter Investments LLP | 92,739 | $6.11M | 1.07% | −6,000−6.1% | Reduced |
| Sofinnova Investments, Inc. | 91,791 | $6.05M | 0.30% | +91,791 | New |
| Mutual of America Capital Management LLC | 90,879 | $5.99M | 0.07% | −4,351−4.6% | Reduced |
| Thornburg Investment Management Inc | 83,190 | $5.48M | 0.06% | +792+1.0% | Added |
| Barclays PLC | 79,159 | $5.22M | 0.00% | −264,299−77.0% | Reduced |
| Neuberger Berman Group LLC | 77,093 | $5.08M | 0.00% | +5,715+8.0% | Added |
| Wells Fargo & Company | 74,342 | $4.90M | 0.00% | −87,214−54.0% | Reduced |
| Erste Asset Management GmbH | 76,950 | $4.85M | 0.04% | 00.0% | Unchanged |
| Rafferty Asset Management, LLC | 72,607 | $4.79M | 0.02% | −25,934−26.3% | Reduced |
| Aquatic Capital Management LLC | 72,478 | $4.78M | 0.14% | −25,019−25.7% | Reduced |
| Granahan Investment Management Inc | 72,464 | $4.78M | 0.23% | −9,657−11.8% | Reduced |
| State of Wisconsin Investment Board | 72,065 | $4.75M | 0.01% | +3,432+5.0% | Added |
| Silverarc Capital Management, LLC | 71,203 | $4.69M | 0.55% | +71,203 | New |
| Nicholas Investment Partners, LP | 69,845 | $4.60M | 0.33% | −395−0.6% | Reduced |
| SEI Investments Co | 69,812 | $4.60M | 0.00% | −427−0.6% | Reduced |
| Pier Capital, LLC | 69,583 | $4.59M | 0.76% | +69,583 | New |
| Great West Life Assurance Co | 68,585 | $4.52M | 0.01% | +2,382+3.6% | Added |
| Raymond James Financial Inc | 68,503 | $4.52M | 0.00% | −13,892−16.9% | Reduced |
| Tyro Capital Management LLC | 64,666 | $4.26M | 1.08% | +4,028+6.6% | Added |
| ACT Capital Management, LLC | 64,500 | $4.25M | 3.34% | 00.0% | Unchanged |
| Teachers Retirement System of the State of Kentucky | 62,789 | $4.14M | 0.03% | 00.0% | Unchanged |
| Seven Fleet Capital Management LP | 61,269 | $4.04M | 1.27% | +50,934+492.8% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 61,177 | $4.02M | 0.01% | +1,542+2.6% | Added |
| Prudential Financial Inc | 59,425 | $3.92M | 0.00% | +17,390+41.4% | Added |
| HighVista Strategies LLC | 58,643 | $3.87M | 1.07% | −55,921−48.8% | Reduced |
| Ironwood Investment Management LLC | 56,738 | $3.74M | 1.56% | −491−0.9% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 55,390 | $3.65M | 0.01% | +1,112+2.0% | Added |
| Vanguard Global Advisers, LLC | 55,183 | $3.64M | 0.00% | +55,183 | New |
| Stifel Financial Corp | 54,444 | $3.59M | 0.00% | +6,473+13.5% | Added |
| Intech Investment Management LLC | 53,348 | $3.52M | 0.03% | +3,914+7.9% | Added |
| Amalgamated Bank | 52,801 | $3.48M | 0.03% | +2,171+4.3% | Added |
| Quantinno Capital Management LP | 52,598 | $3.47M | 0.01% | +2,161+4.3% | Added |
| ExodusPoint Capital Management, LP | 52,227 | $3.44M | 0.03% | −290,917−84.8% | Reduced |
| Advisor Group Holdings, Inc. | 50,872 | $3.35M | 0.00% | −1,564−3.0% | Reduced |
| EFG International AG | 50,184 | $3.31M | 0.07% | −3,081−5.8% | Reduced |
| SummitTX Capital, L.P. | 49,711 | $3.28M | 0.10% | +49,711 | New |
| Harvey Capital Management Inc | 49,295 | $3.25M | 0.74% | +2,485+5.3% | Added |
| Brevan Howard Capital Management LP | 48,961 | $3.23M | 0.03% | −52,069−51.5% | Reduced |
| Nomura Asset Management International Inc. | 48,483 | $3.20M | 0.01% | +3,604+8.0% | Added |
| Trexquant Investment LP | 48,190 | $3.18M | 0.02% | +48,190 | New |
| New York State Common Retirement Fund | 46,719 | $3.08M | 0.00% | +544+1.2% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 45,573 | $3.00M | 0.01% | +9,159+25.2% | Added |
| Rock Springs Capital Management LP | 45,364 | $2.99M | 0.18% | +9,511+26.5% | Added |
| Pathstone Holdings, LLC | 44,516 | $2.93M | 0.01% | −883−1.9% | Reduced |
| Sphera Funds Management Ltd. | 39,817 | $2.62M | 0.45% | −51,900−56.6% | Reduced |
| State of New Jersey Common Pension Fund D | 39,696 | $2.62M | 0.01% | +897+2.3% | Added |
| Hudson Bay Capital Management LP | 39,470 | $2.60M | 0.02% | −135,880−77.5% | Reduced |
| State of Tennessee, Treasury Department | 37,506 | $2.47M | 0.01% | 00.0% | Unchanged |
| Moody Aldrich Partners LLC | 36,945 | $2.44M | 0.44% | −41,673−53.0% | Reduced |
| Yousif Capital Management, LLC | 36,919 | $2.43M | 0.03% | −1,745−4.5% | Reduced |
| Profund Advisors LLC | 35,713 | $2.35M | 0.09% | −3,929−9.9% | Reduced |
| Louisiana State Employees Retirement System | 35,500 | $2.34M | 0.04% | +2,200+6.6% | Added |
| Guggenheim Capital LLC | 35,139 | $2.32M | 0.02% | +3,817+12.2% | Added |
| Cinctive Capital Management LP | 35,062 | $2.31M | 0.15% | +28,500+434.3% | Added |
| Envestnet Asset Management Inc | 34,537 | $2.28M | 0.00% | −28,196−44.9% | Reduced |
| Natixis Advisors, L.P. | 33,716 | $2.22M | 0.00% | +7,466+28.4% | Added |
| Police & Firemen's Retirement System of New Jersey | 32,776 | $2.16M | 0.02% | +1,274+4.0% | Added |
| Ameritas Investment Partners, Inc. | 32,284 | $2.13M | 0.07% | +94+0.3% | Added |
| Palo Alto Investors LP | 32,195 | $2.12M | 0.32% | +32,195 | New |
| Arizona State Retirement System | 31,904 | $2.10M | 0.01% | −22−0.1% | Reduced |
| Aigen Investment Management, LP | 31,216 | $2.06M | 0.53% | +25,648+460.6% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 30,634 | $2.02M | 0.01% | +38+0.1% | Added |
| Birchview Capital, LP | 30,000 | $1.98M | 1.13% | 00.0% | Unchanged |
| F/M Investments LLC | 29,588 | $1.95M | 0.13% | +29,588 | New |
| State of Michigan Retirement System | 29,400 | $1.94M | 0.01% | +500+1.7% | Added |
| Vanguard Investments Australia, Ltd. | 28,963 | $1.91M | 0.01% | +28,963 | New |
| Fifth Third Bancorp | 28,728 | $1.89M | 0.00% | +27,638+2,535.6% | Added |
| State Board of Administration of Florida Retirement System | 28,486 | $1.88M | 0.00% | 00.0% | Unchanged |
| ProShare Advisors LLC | 27,777 | $1.83M | 0.00% | −4,442−13.8% | Reduced |
| Thrivent Financial for Lutherans | 27,547 | $1.82M | 0.00% | +15+0.1% | Added |
| Northwestern Mutual Investment Management Company, LLC | 27,391 | $1.81M | 0.03% | +36+0.1% | Added |
| KLP Kapitalforvaltning AS | 25,600 | $1.69M | 0.01% | +1,300+5.3% | Added |
| Oregon Public Employees Retirement Fund | 25,115 | $1.66M | 0.02% | +700+2.9% | Added |
| Moore Capital Management, LP | 25,000 | $1.65M | 0.06% | 00.0% | Unchanged |
| Great Lakes Advisors, LLC | 24,981 | $1.65M | 0.01% | −36−0.1% | Reduced |
| SG Americas Securities, LLC | 24,541 | $1.62M | 0.00% | −7,655−23.8% | Reduced |
| XTX Topco Ltd | 23,853 | $1.57M | 0.03% | −66,726−73.7% | Reduced |
| JustInvest LLC | 23,835 | $1.57M | 0.02% | +3,110+15.0% | Added |
| Knott David M Jr | 23,644 | $1.56M | 0.93% | −10,356−30.5% | Reduced |