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 |
|---|---|---|---|---|---|
| LPL Financial LLC | 12,372 | $815.4K | 0.00% | +176+1.4% | Added |
| STRS Ohio | 12,600 | $830.5K | 0.00% | +300+2.4% | Added |
| Ellsworth Advisors, LLC | 12,730 | $839.0K | 0.16% | +12,730 | New |
| DnB Asset Management AS | 12,898 | $850.1K | 0.00% | +1,819+16.4% | Added |
| Atria Investments LLC | 12,980 | $855.5K | 0.01% | −1,390−9.7% | Reduced |
| Gabelli & Co Investment Advisers, Inc. | 13,578 | $894.9K | 0.13% | 00.0% | Unchanged |
| Kennedy Capital Management, Inc. | 14,361 | $946.5K | 0.02% | +1,178+8.9% | Added |
| Bank of Montreal | 14,612 | $963.1K | 0.00% | +1,320+9.9% | Added |
| Ami Asset Management Corp | 14,816 | $976.5K | 0.06% | +536+3.8% | Added |
| Teacher Retirement System of Texas | 15,038 | $991.2K | 0.00% | −1,821−10.8% | Reduced |
| Tower Research Capital LLC (TRC) | 15,118 | $996.4K | 0.03% | +10,140+203.7% | Added |
| Gabelli Funds LLC | 15,209 | $1.00M | 0.01% | +1,000+7.0% | Added |
| Quadrant Capital Group LLC | 15,366 | $1.01M | 0.03% | +670+4.6% | Added |
| Dana Investment Advisors, Inc. | 15,761 | $1.04M | 0.03% | +385+2.5% | Added |
| Oak Ridge Investments LLC | 15,902 | $1.05M | 0.07% | +225+1.4% | Added |
| Inceptionr LLC | 15,974 | $1.05M | 0.25% | +15,974 | New |
| Quinn Opportunity Partners LLC | 16,000 | $1.05M | 0.06% | −22,082−58.0% | Reduced |
| New York Life Investment Management LLC | 16,059 | $1.06M | 0.01% | +16,059 | New |
| Artia Global Partners LP | 16,300 | $1.07M | 0.24% | +16,300 | New |
| HighTower Advisors, LLC | 16,631 | $1.10M | 0.00% | +2,718+19.5% | Added |
| Marks Group Wealth Management, Inc | 16,835 | $1.11M | 0.11% | +2,269+15.6% | Added |
| Dark Forest Capital Management LP | 16,914 | $1.11M | 0.10% | +16,914 | New |
| Xponance, Inc. | 17,036 | $1.12M | 0.01% | +2,651+18.4% | Added |
| Vident Advisory, LLC | 17,069 | $1.13M | 0.01% | +614+3.7% | Added |
| Amundi | 17,078 | $1.13M | 0.00% | +10,305+152.1% | Added |
| Schroder Investment Management Group | 18,113 | $1.14M | 0.00% | +18,113 | New |
| Royal Bank of Canada | 17,692 | $1.17M | 0.00% | −12,880−42.1% | Reduced |
| Ethic Inc. | 18,998 | $1.25M | 0.02% | +2,158+12.8% | Added |
| Victory Capital Management Inc | 19,278 | $1.27M | 0.00% | +1,735+9.9% | Added |
| Toroso Investments, LLC | 19,983 | $1.32M | 0.00% | +5,995+42.9% | Added |
| Atom Investors LP | 20,350 | $1.34M | 0.10% | +20,350 | New |
| Allstate Corp | 21,490 | $1.42M | 0.02% | +21,490 | New |
| Sanders Morris Harris LLC | 21,505 | $1.42M | 0.22% | +21,505 | New |
| Calamos Advisors LLC | 21,627 | $1.43M | 0.01% | +21,627 | New |
| Prelude Capital Management, LLC | 21,813 | $1.44M | 0.11% | −15,726−41.9% | Reduced |
| China Universal Asset Management Co., Ltd. | 21,856 | $1.44M | 0.11% | +1,933+9.7% | Added |
| Daiwa Securities Group Inc. | 22,200 | $1.46M | 0.00% | +21,849+6,224.8% | Added |
| Bamco Inc | 23,000 | $1.52M | 0.00% | +23,000 | New |
| Pacer Advisors, Inc. | 23,057 | $1.52M | 0.00% | −4,726−17.0% | Reduced |
| Edgestream Partners, L.P. | 23,491 | $1.55M | 0.05% | −5,793−19.8% | Reduced |
| New Mexico Educational Retirement Board | 23,500 | $1.55M | 0.05% | 00.0% | Unchanged |
| Knott David M Jr | 23,644 | $1.56M | 0.93% | −10,356−30.5% | Reduced |
| JustInvest LLC | 23,835 | $1.57M | 0.02% | +3,110+15.0% | Added |
| XTX Topco Ltd | 23,853 | $1.57M | 0.03% | −66,726−73.7% | Reduced |
| SG Americas Securities, LLC | 24,541 | $1.62M | 0.00% | −7,655−23.8% | Reduced |
| Great Lakes Advisors, LLC | 24,981 | $1.65M | 0.01% | −36−0.1% | Reduced |
| Moore Capital Management, LP | 25,000 | $1.65M | 0.06% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 25,115 | $1.66M | 0.02% | +700+2.9% | Added |
| KLP Kapitalforvaltning AS | 25,600 | $1.69M | 0.01% | +1,300+5.3% | Added |
| Northwestern Mutual Investment Management Company, LLC | 27,391 | $1.81M | 0.03% | +36+0.1% | Added |
| Thrivent Financial for Lutherans | 27,547 | $1.82M | 0.00% | +15+0.1% | Added |
| ProShare Advisors LLC | 27,777 | $1.83M | 0.00% | −4,442−13.8% | Reduced |
| State Board of Administration of Florida Retirement System | 28,486 | $1.88M | 0.00% | 00.0% | Unchanged |
| Fifth Third Bancorp | 28,728 | $1.89M | 0.00% | +27,638+2,535.6% | Added |
| Vanguard Investments Australia, Ltd. | 28,963 | $1.91M | 0.01% | +28,963 | New |
| State of Michigan Retirement System | 29,400 | $1.94M | 0.01% | +500+1.7% | Added |
| F/M Investments LLC | 29,588 | $1.95M | 0.13% | +29,588 | New |
| Birchview Capital, LP | 30,000 | $1.98M | 1.13% | 00.0% | Unchanged |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 30,634 | $2.02M | 0.01% | +38+0.1% | Added |
| Aigen Investment Management, LP | 31,216 | $2.06M | 0.53% | +25,648+460.6% | Added |
| Arizona State Retirement System | 31,904 | $2.10M | 0.01% | −22−0.1% | Reduced |
| Palo Alto Investors LP | 32,195 | $2.12M | 0.32% | +32,195 | New |
| Ameritas Investment Partners, Inc. | 32,284 | $2.13M | 0.07% | +94+0.3% | Added |
| Police & Firemen's Retirement System of New Jersey | 32,776 | $2.16M | 0.02% | +1,274+4.0% | Added |
| Natixis Advisors, L.P. | 33,716 | $2.22M | 0.00% | +7,466+28.4% | Added |
| Envestnet Asset Management Inc | 34,537 | $2.28M | 0.00% | −28,196−44.9% | Reduced |
| Cinctive Capital Management LP | 35,062 | $2.31M | 0.15% | +28,500+434.3% | Added |
| Guggenheim Capital LLC | 35,139 | $2.32M | 0.02% | +3,817+12.2% | Added |
| Louisiana State Employees Retirement System | 35,500 | $2.34M | 0.04% | +2,200+6.6% | Added |
| Profund Advisors LLC | 35,713 | $2.35M | 0.09% | −3,929−9.9% | Reduced |
| Yousif Capital Management, LLC | 36,919 | $2.43M | 0.03% | −1,745−4.5% | Reduced |
| Moody Aldrich Partners LLC | 36,945 | $2.44M | 0.44% | −41,673−53.0% | Reduced |
| State of Tennessee, Treasury Department | 37,506 | $2.47M | 0.01% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 39,470 | $2.60M | 0.02% | −135,880−77.5% | Reduced |
| State of New Jersey Common Pension Fund D | 39,696 | $2.62M | 0.01% | +897+2.3% | Added |
| Sphera Funds Management Ltd. | 39,817 | $2.62M | 0.45% | −51,900−56.6% | Reduced |
| Pathstone Holdings, LLC | 44,516 | $2.93M | 0.01% | −883−1.9% | Reduced |
| Rock Springs Capital Management LP | 45,364 | $2.99M | 0.18% | +9,511+26.5% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 45,573 | $3.00M | 0.01% | +9,159+25.2% | Added |
| New York State Common Retirement Fund | 46,719 | $3.08M | 0.00% | +544+1.2% | Added |
| Trexquant Investment LP | 48,190 | $3.18M | 0.02% | +48,190 | New |
| Nomura Asset Management International Inc. | 48,483 | $3.20M | 0.01% | +3,604+8.0% | Added |
| Brevan Howard Capital Management LP | 48,961 | $3.23M | 0.03% | −52,069−51.5% | Reduced |
| Harvey Capital Management Inc | 49,295 | $3.25M | 0.74% | +2,485+5.3% | Added |
| SummitTX Capital, L.P. | 49,711 | $3.28M | 0.10% | +49,711 | New |
| EFG International AG | 50,184 | $3.31M | 0.07% | −3,081−5.8% | Reduced |
| Advisor Group Holdings, Inc. | 50,872 | $3.35M | 0.00% | −1,564−3.0% | Reduced |
| ExodusPoint Capital Management, LP | 52,227 | $3.44M | 0.03% | −290,917−84.8% | Reduced |
| Quantinno Capital Management LP | 52,598 | $3.47M | 0.01% | +2,161+4.3% | Added |
| Amalgamated Bank | 52,801 | $3.48M | 0.03% | +2,171+4.3% | Added |
| Intech Investment Management LLC | 53,348 | $3.52M | 0.03% | +3,914+7.9% | Added |
| Stifel Financial Corp | 54,444 | $3.59M | 0.00% | +6,473+13.5% | Added |
| Vanguard Global Advisers, LLC | 55,183 | $3.64M | 0.00% | +55,183 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 55,390 | $3.65M | 0.01% | +1,112+2.0% | Added |
| Ironwood Investment Management LLC | 56,738 | $3.74M | 1.56% | −491−0.9% | Reduced |
| HighVista Strategies LLC | 58,643 | $3.87M | 1.07% | −55,921−48.8% | Reduced |
| Prudential Financial Inc | 59,425 | $3.92M | 0.00% | +17,390+41.4% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 61,177 | $4.02M | 0.01% | +1,542+2.6% | Added |
| Seven Fleet Capital Management LP | 61,269 | $4.04M | 1.27% | +50,934+492.8% | Added |
| Teachers Retirement System of the State of Kentucky | 62,789 | $4.14M | 0.03% | 00.0% | Unchanged |