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 18 sales; 481 institutions reported holding it in 13F filings for Q2 2026, worth $13.7B in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Cytokinetics Inc as of Jun 30, 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
- 481
- +46 vs. Q1 2026
- Shares held
- 160.4M
- +14.6M (+10.0%) vs. Q1 2026
- Total value
- $13.7B
- +$4.05B (+42.2%) vs. Q1 2026
- New holders
- 93
- 236 more added
- Sold out
- 47
- 102 more reduced
6 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 | 481 | $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, Q2 2026
Shares, value and share of portfolio for each institution holding Cytokinetics Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rock Springs Capital Management LP | 187,980 | $16.0M | 0.78% | +142,616+314.4% | Added |
| DAFNA Capital Management LLC | 171,998 | $14.7M | 2.79% | −45,499−20.9% | Reduced |
| Ghisallo Capital Management LLC | 170,000 | $14.5M | 0.28% | +170,000 | New |
| Impax Asset Management Group plc | 165,000 | $14.1M | 0.09% | +40,000+32.0% | Added |
| Legal & General Group Plc | 164,688 | $14.0M | 0.00% | +13,667+9.0% | Added |
| AQR Capital Management LLC | 161,903 | $13.8M | 0.00% | +5,359+3.4% | Added |
| Kingdon Capital Management, L.L.C. | 157,100 | $13.4M | 1.80% | +157,100 | New |
| Manufacturers Life Insurance Company, The | 156,477 | $13.3M | 0.01% | −10,647−6.4% | Reduced |
| Wells Fargo & Company | 152,592 | $13.0M | 0.00% | +78,250+105.3% | Added |
| HSBC Holdings PLC | 151,125 | $12.9M | 0.01% | −70,874−31.9% | Reduced |
| Schroder Investment Management Group | 140,099 | $12.2M | 0.01% | +121,986+673.5% | Added |
| Creative Planning | 141,939 | $12.1M | 0.01% | +34,179+31.7% | Added |
| Retirement Systems of Alabama | 140,426 | $12.0M | 0.04% | −9,465−6.3% | Reduced |
| MetLife Investment Management | 140,046 | $11.9M | 0.05% | +16,717+13.6% | Added |
| Polymer Capital Management (HK) LTD | 138,255 | $11.8M | 1.20% | +138,255 | New |
| Cinctive Capital Management LP | 137,838 | $11.7M | 0.47% | +102,776+293.1% | Added |
| Algert Global LLC | 129,460 | $11.0M | 0.13% | +12,340+10.5% | Added |
| California State Teachers Retirement System | 127,969 | $10.9M | 0.01% | −8,630−6.3% | Reduced |
| Aquatic Capital Management LLC | 125,090 | $10.7M | 0.37% | +52,612+72.6% | Added |
| Mutual of America Capital Management LLC | 121,652 | $10.4M | 0.10% | +30,773+33.9% | Added |
| Standard Life Aberdeen plc | 119,435 | $10.2M | 0.01% | −363,839−75.3% | Reduced |
| Seven Fleet Capital Management LP | 118,240 | $10.1M | 1.66% | +56,971+93.0% | Added |
| First Trust Advisors LP | 118,149 | $10.1M | 0.01% | −27,741−19.0% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 116,828 | $9.95M | 0.02% | +61,438+110.9% | Added |
| Trexquant Investment LP | 115,134 | $9.81M | 0.06% | +66,944+138.9% | Added |
| Freestone Grove Partners LP | 114,824 | $9.78M | 0.06% | −101,945−47.0% | Reduced |
| New York State Teachers Retirement System | 114,600 | $9.76M | 0.02% | +4,095+3.7% | Added |
| Vanguard Asset Management, Ltd | 112,918 | $9.62M | 0.01% | +5,924+5.5% | Added |
| SummitTX Capital, L.P. | 112,893 | $9.62M | 0.25% | +63,182+127.1% | Added |
| Erste Asset Management GmbH | 109,183 | $9.53M | 0.07% | +32,233+41.9% | Added |
| Millennium Management LLC | 109,717 | $9.35M | 0.01% | +11,758+12.0% | Added |
| Royce & Associates LP | 101,624 | $8.66M | 0.07% | −22,673−18.2% | Reduced |
| Peregrine Capital Management LLC | 100,019 | $8.52M | 0.28% | −3,607−3.5% | Reduced |
| Boxer Capital Management, LLC | 100,000 | $8.52M | 0.64% | 00.0% | Unchanged |
| Burkehill Global Management, LP | 100,000 | $8.52M | 0.31% | +100,000 | New |
| SEI Investments Co | 98,162 | $8.36M | 0.01% | +28,350+40.6% | Added |
| Dimensional Fund Advisors LP | 96,832 | $8.25M | 0.00% | +2,329+2.5% | Added |
| Tudor Investment Corp Et Al | 92,680 | $7.90M | 0.03% | +92,680 | New |
| Envestnet Asset Management Inc | 88,521 | $7.54M | 0.00% | +53,984+156.3% | Added |
| Raymond James Financial Inc | 88,259 | $7.52M | 0.00% | +19,756+28.8% | Added |
| Seven Grand Managers, LLC | 85,000 | $7.24M | 0.29% | +85,000 | New |
| Capricorn Fund Managers Ltd | 81,879 | $6.98M | 0.56% | +81,879 | New |
| XTX Topco Ltd | 80,743 | $6.88M | 0.09% | +56,890+238.5% | Added |
| HighVista Strategies LLC | 78,003 | $6.65M | 1.52% | +19,360+33.0% | Added |
| State of Wisconsin Investment Board | 76,579 | $6.52M | 0.01% | +4,514+6.3% | Added |
| Public Employees Retirement Association of Colorado | 76,352 | $6.50M | 0.02% | +65,800+623.6% | Added |
| Great West Life Assurance Co | 76,021 | $6.47M | 0.01% | +7,436+10.8% | Added |
| StemPoint Capital LP | 75,603 | $6.44M | 1.11% | −53,974−41.7% | Reduced |
| New York State Common Retirement Fund | 72,682 | $6.19M | 0.01% | +25,963+55.6% | Added |
| Artia Global Partners LP | 70,700 | $6.02M | 1.14% | +54,400+333.7% | Added |
| Pier Capital, LLC | 70,665 | $6.02M | 0.80% | +1,082+1.6% | Added |
| Barclays PLC | 70,642 | $6.02M | 0.00% | −8,517−10.8% | Reduced |
| Neuberger Berman Group LLC | 69,351 | $5.91M | 0.00% | −7,742−10.0% | Reduced |
| Harvey Capital Management Inc | 68,275 | $5.82M | 1.20% | +18,980+38.5% | Added |
| EAM Investors, LLC | 68,185 | $5.81M | 0.52% | +68,185 | New |
| Boothbay Fund Management, LLC | 68,092 | $5.80M | 0.11% | −36,353−34.8% | Reduced |
| Teachers Retirement System of the State of Kentucky | 66,332 | $5.65M | 0.04% | +3,543+5.6% | Added |
| Campbell & CO Investment Adviser LLC | 65,978 | $5.62M | 0.29% | +65,978 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 65,697 | $5.61M | 0.01% | +4,520+7.4% | Added |
| Vanguard Global Advisers, LLC | 60,957 | $5.19M | 0.00% | +5,774+10.5% | Added |
| F/M Investments LLC | 60,891 | $5.19M | 0.26% | +31,303+105.8% | Added |
| State of Tennessee, Treasury Department | 60,194 | $5.13M | 0.02% | +22,688+60.5% | Added |
| Exome Asset Management LLC | 60,056 | $5.12M | 3.16% | −43,662−42.1% | Reduced |
| Militia Capital Management LLC | 60,000 | $5.11M | 0.92% | +60,000 | New |
| Intech Investment Management LLC | 58,348 | $4.97M | 0.05% | +5,000+9.4% | Added |
| EFG International AG | 57,929 | $4.94M | 0.09% | +7,745+15.4% | Added |
| Amalgamated Bank | 57,548 | $4.90M | 0.03% | +4,747+9.0% | Added |
| Stifel Financial Corp | 56,834 | $4.84M | 0.00% | +2,390+4.4% | Added |
| Ironwood Investment Management LLC | 56,589 | $4.82M | 1.67% | −149−0.3% | Reduced |
| Verition Fund Management LLC | 54,889 | $4.68M | 0.03% | +54,889 | New |
| Schonfeld Strategic Advisors LLC | 53,354 | $4.55M | 0.02% | −48,211−47.5% | Reduced |
| Natixis Advisors, L.P. | 53,358 | $4.54M | 0.01% | +19,642+58.3% | Added |
| Calamos Advisors LLC | 51,443 | $4.38M | 0.02% | +29,816+137.9% | Added |
| Quantinno Capital Management LP | 50,259 | $4.28M | 0.01% | −2,339−4.4% | Reduced |
| Advisor Group Holdings, Inc. | 50,087 | $4.27M | 0.01% | −785−1.5% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 47,853 | $4.08M | 0.01% | +2,280+5.0% | Added |
| Pathstone Holdings, LLC | 47,633 | $4.06M | 0.01% | +3,117+7.0% | Added |
| ACT Capital Management, LLC | 47,500 | $4.05M | 2.64% | −17,000−26.4% | Reduced |
| Sector Gamma AS | 45,000 | $3.83M | 0.83% | +45,000 | New |
| Y-Intercept (Hong Kong) Ltd | 43,619 | $3.72M | 0.07% | +43,619 | New |
| Rafferty Asset Management, LLC | 43,297 | $3.69M | 0.01% | −29,310−40.4% | Reduced |
| Granahan Investment Management Inc | 40,247 | $3.43M | 0.12% | −32,217−44.5% | Reduced |
| Louisiana State Employees Retirement System | 39,700 | $3.38M | 0.05% | +4,200+11.8% | Added |
| Police & Firemen's Retirement System of New Jersey | 39,014 | $3.32M | 0.02% | +6,238+19.0% | Added |
| Yousif Capital Management, LLC | 38,651 | $3.29M | 0.04% | +1,732+4.7% | Added |
| Ameritas Investment Partners, Inc. | 36,992 | $3.15M | 0.08% | +4,708+14.6% | Added |
| Dark Forest Capital Management LP | 36,708 | $3.13M | 0.20% | +19,794+117.0% | Added |
| Royal Bank of Canada | 36,475 | $3.11M | 0.00% | +18,783+106.2% | Added |
| State of New Jersey Common Pension Fund D | 35,841 | $3.05M | 0.01% | −3,855−9.7% | Reduced |
| State Board of Administration of Florida Retirement System | 34,702 | $2.96M | 0.00% | +6,216+21.8% | Added |
| LMR Partners LLP | 34,653 | $2.95M | 0.02% | +30,353+705.9% | Added |
| SG Americas Securities, LLC | 34,624 | $2.95M | 0.00% | +10,083+41.1% | Added |
| Nomura Holdings Inc | 34,000 | $2.90M | 0.01% | +29,870+723.2% | Added |
| Ishara Investments LP | 32,800 | $2.79M | 2.09% | +32,800 | New |
| Oak Ridge Investments LLC | 32,518 | $2.77M | 0.16% | +16,616+104.5% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 32,504 | $2.77M | 0.01% | +1,870+6.1% | Added |
| Palo Alto Investors LP | 32,195 | $2.74M | 0.38% | 00.0% | Unchanged |
| State of Michigan Retirement System | 31,800 | $2.71M | 0.01% | +2,400+8.2% | Added |
| Guggenheim Capital LLC | 31,658 | $2.70M | 0.02% | −3,481−9.9% | Reduced |
| Thornburg Investment Management Inc | 31,133 | $2.65M | 0.03% | −52,057−62.6% | Reduced |