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 |
|---|---|---|---|---|---|
| ACT Capital Management, LLC | 64,500 | $4.25M | 3.34% | 00.0% | Unchanged |
| Tyro Capital Management LLC | 64,666 | $4.26M | 1.08% | +4,028+6.6% | Added |
| Raymond James Financial Inc | 68,503 | $4.52M | 0.00% | −13,892−16.9% | Reduced |
| Great West Life Assurance Co | 68,585 | $4.52M | 0.01% | +2,382+3.6% | Added |
| Pier Capital, LLC | 69,583 | $4.59M | 0.76% | +69,583 | New |
| SEI Investments Co | 69,812 | $4.60M | 0.00% | −427−0.6% | Reduced |
| Nicholas Investment Partners, LP | 69,845 | $4.60M | 0.33% | −395−0.6% | Reduced |
| Silverarc Capital Management, LLC | 71,203 | $4.69M | 0.55% | +71,203 | New |
| State of Wisconsin Investment Board | 72,065 | $4.75M | 0.01% | +3,432+5.0% | Added |
| Granahan Investment Management Inc | 72,464 | $4.78M | 0.23% | −9,657−11.8% | Reduced |
| Aquatic Capital Management LLC | 72,478 | $4.78M | 0.14% | −25,019−25.7% | Reduced |
| Rafferty Asset Management, LLC | 72,607 | $4.79M | 0.02% | −25,934−26.3% | Reduced |
| Erste Asset Management GmbH | 76,950 | $4.85M | 0.04% | 00.0% | Unchanged |
| Wells Fargo & Company | 74,342 | $4.90M | 0.00% | −87,214−54.0% | Reduced |
| Neuberger Berman Group LLC | 77,093 | $5.08M | 0.00% | +5,715+8.0% | Added |
| Barclays PLC | 79,159 | $5.22M | 0.00% | −264,299−77.0% | Reduced |
| Thornburg Investment Management Inc | 83,190 | $5.48M | 0.06% | +792+1.0% | Added |
| Mutual of America Capital Management LLC | 90,879 | $5.99M | 0.07% | −4,351−4.6% | Reduced |
| Sofinnova Investments, Inc. | 91,791 | $6.05M | 0.30% | +91,791 | New |
| Deeter Investments LLP | 92,739 | $6.11M | 1.07% | −6,000−6.1% | Reduced |
| Dimensional Fund Advisors LP | 94,503 | $6.23M | 0.00% | +40,574+75.2% | Added |
| Millennium Management LLC | 97,959 | $6.46M | 0.00% | −127,497−56.6% | Reduced |
| 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 |
| Schonfeld Strategic Advisors LLC | 101,565 | $6.69M | 0.05% | +101,565 | New |
| Peregrine Capital Management LLC | 103,626 | $6.83M | 0.25% | −4,436−4.1% | Reduced |
| Exome Asset Management LLC | 103,718 | $6.84M | 4.02% | −21,031−16.9% | Reduced |
| Boothbay Fund Management, LLC | 104,445 | $6.88M | 0.16% | +47,992+85.0% | Added |
| Vanguard Asset Management, Ltd | 106,994 | $7.05M | 0.01% | +106,994 | New |
| Creative Planning | 107,760 | $7.10M | 0.00% | +10,821+11.2% | Added |
| New York State Teachers Retirement System | 110,505 | $7.28M | 0.01% | −3,995−3.5% | Reduced |
| Algert Global LLC | 117,120 | $7.72M | 0.12% | +65,810+128.3% | Added |
| MetLife Investment Management | 123,329 | $8.13M | 0.04% | +1,419+1.2% | Added |
| Royce & Associates LP | 124,297 | $8.19M | 0.08% | −20,129−13.9% | Reduced |
| Impax Asset Management Group plc | 125,000 | $8.24M | 0.06% | +25,000+25.0% | Added |
| StemPoint Capital LP | 129,577 | $8.54M | 1.64% | −17,401−11.8% | Reduced |
| Emerald Mutual Fund Advisers Trust | 135,464 | $8.93M | 0.43% | +135,464 | New |
| California State Teachers Retirement System | 136,599 | $9.00M | 0.01% | +29,275+27.3% | Added |
| First Trust Advisors LP | 145,890 | $9.62M | 0.01% | +18,366+14.4% | Added |
| Retirement Systems of Alabama | 149,891 | $9.88M | 0.03% | +3,223+2.2% | Added |
| Alyeska Investment Group, L.P. | 150,000 | $9.89M | 0.03% | +150,000 | New |
| Legal & General Group Plc | 151,021 | $9.95M | 0.00% | −17,565−10.4% | Reduced |
| AQR Capital Management LLC | 156,544 | $10.3M | 0.00% | −80,381−33.9% | Reduced |
| Manufacturers Life Insurance Company, The | 167,124 | $11.0M | 0.01% | −23,683−12.4% | Reduced |
| Russell Investments Group, Ltd. | 174,029 | $11.5M | 0.01% | +36,339+26.4% | Added |
| Pinnacle Associates Ltd | 177,062 | $11.7M | 0.15% | −13,937−7.3% | Reduced |
| Checkpoint Capital L.P. | 180,000 | $11.9M | 4.26% | +13,177+7.9% | Added |
| Segall Bryant & Hamill, LLC | 180,200 | $11.9M | 0.17% | −9,313−4.9% | Reduced |
| Deutsche Bank AG | 187,138 | $12.3M | 0.00% | +11,334+6.4% | Added |
| California Public Employees Retirement System | 198,530 | $13.1M | 0.01% | +9,129+4.8% | Added |
| Emerald Advisers, LLC | 198,811 | $13.1M | 0.41% | +198,811 | New |
| Mirador Capital Partners LP | 202,673 | $13.4M | 1.89% | +4,115+2.1% | Added |
| Catalio Capital Management, LP | 215,501 | $14.2M | 2.97% | −42,880−16.6% | Reduced |
| Freestone Grove Partners LP | 216,769 | $14.3M | 0.10% | +216,769 | New |
| DAFNA Capital Management LLC | 217,497 | $14.3M | 3.26% | −153,500−41.4% | Reduced |
| HSBC Holdings PLC | 221,999 | $14.6M | 0.01% | +218,303+5,906.5% | Added |
| Sarissa Capital Management LP | 228,623 | $15.1M | 9.56% | −167,734−42.3% | Reduced |
| Swiss National Bank | 229,800 | $15.1M | 0.01% | +5,600+2.5% | Added |
| UBS Asset Management Americas Inc | 240,632 | $15.9M | 0.00% | +5,583+2.4% | Added |
| Capital World Investors | 242,041 | $16.0M | 0.00% | +242,041 | New |
| Caption Management, LLC | 245,000 | $16.1M | 0.77% | +217,001+775.0% | Added |
| Handelsbanken Fonder AB | 247,300 | $16.3M | 0.05% | +41,500+20.2% | Added |
| Citigroup Inc | 249,243 | $16.4M | 0.01% | +147,142+144.1% | Added |
| Voya Investment Management LLC | 259,459 | $17.1M | 0.02% | +193,867+295.6% | Added |
| Susquehanna Portfolio Strategies, LLC | 278,429 | $18.4M | 0.27% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 282,121 | $18.6M | 0.01% | +25,909+10.1% | Added |
| Ikarian Capital, LLC | 283,572 | $18.7M | 2.67% | +110,900+64.2% | Added |
| First Turn Management, LLC | 283,700 | $18.7M | 2.09% | −41,968−12.9% | Reduced |
| Two Sigma Investments, LP | 285,008 | $18.8M | 0.02% | +10,991+4.0% | Added |
| Vestal Point Capital, LP | 300,000 | $19.8M | 0.55% | +300,000 | New |
| Trails Edge Capital Partners, LP | 300,000 | $19.8M | 4.65% | +300,000 | New |
| E. Ohman J:or Asset Management AB | 300,762 | $19.8M | 0.52% | −62,200−17.1% | Reduced |
| Ameriprise Financial Inc | 302,802 | $20.0M | 0.00% | −243,003−44.5% | Reduced |
| Massachusetts Financial Services Co | 311,649 | $20.5M | 0.01% | −15,553−4.8% | Reduced |
| Gilder Gagnon Howe & Co LLC | 330,989 | $21.8M | 0.26% | −54,831−14.2% | Reduced |
| Candriam Luxembourg S.C.A. | 335,208 | $22.1M | 0.11% | +188,577+128.6% | Added |
| GSK plc | 340,434 | $22.4M | 3.74% | 00.0% | Unchanged |
| Nuveen, LLC | 351,809 | $23.2M | 0.01% | −17,470−4.7% | Reduced |
| Group One Trading, L.P. | 363,997 | $24.0M | 0.79% | −43,256−10.6% | Reduced |
| Rhumbline Advisers | 369,575 | $24.4M | 0.02% | +12,580+3.5% | Added |
| Franklin Resources Inc | 409,784 | $27.0M | 0.01% | −206−0.1% | Reduced |
| TD Asset Management Inc | 420,846 | $27.7M | 0.02% | −123,164−22.6% | Reduced |
| Alliancebernstein L.P. | 459,087 | $29.2M | 0.01% | +46,121+11.2% | Added |
| American Century Companies Inc | 443,957 | $29.3M | 0.02% | +470.0% | Added |
| Eventide Asset Management, LLC | 479,098 | $31.6M | 0.52% | −513−0.1% | Reduced |
| Standard Life Aberdeen plc | 483,274 | $31.9M | 0.05% | +2130.0% | Added |
| Invesco Ltd. | 484,980 | $32.0M | 0.00% | +280,102+136.7% | Added |
| GW&K Investment Management, LLC | 494,619 | $32.6M | 0.29% | +22,256+4.7% | Added |
| MPM Oncology Impact Management LP | 500,000 | $33.0M | 2.54% | +500,000 | New |
| Foresite Capital Management IV, LLC | 503,295 | $33.2M | 13.99% | +45,000+9.8% | Added |
| Siren, L.L.C. | 613,952 | $40.5M | 1.12% | +613,952 | New |
| Brown Advisory Inc | 614,655 | $40.5M | 0.07% | −116,499−15.9% | Reduced |
| Point72 Asset Management, L.P. | 626,102 | $41.3M | 0.07% | +626,102 | New |
| ADAR1 Capital Management, LLC | 632,556 | $41.7M | 2.51% | +92,390+17.1% | Added |
| Marshall Wace, LLP | 656,608 | $43.3M | 0.05% | +319,577+94.8% | Added |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. | 660,310 | $43.5M | 3.69% | −87,673−11.7% | Reduced |
| Federated Hermes, Inc. | 699,453 | $46.1M | 0.07% | +215,785+44.6% | Added |
| Affinity Asset Advisors, LLC | 700,483 | $46.2M | 2.71% | −99,517−12.4% | Reduced |
| D. E. Shaw & Co., Inc. | 706,631 | $46.6M | 0.04% | +587,410+492.7% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 714,344 | $47.1M | 0.05% | −113,519−13.7% | Reduced |