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, 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 | 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, 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 |
|---|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | 17,523,840 | $1.15B | 0.80% | −192,532−1.1% | Reduced |
| BlackRock, Inc. | 16,548,011 | $1.09B | 0.02% | +152,888+0.9% | Added |
| FMR LLC | 10,723,140 | $706.8M | 0.04% | −2,084,612−16.3% | Reduced |
| Wellington Management Group LLP | 8,009,489 | $527.9M | 0.10% | +72,426+0.9% | Added |
| Vanguard Portfolio Management LLC | 5,843,782 | $385.2M | 0.02% | +5,843,782 | New |
| State Street Corp | 5,745,193 | $378.7M | 0.01% | −80,102−1.4% | Reduced |
| Vanguard Capital Management LLC | 5,488,634 | $361.8M | 0.01% | +5,488,634 | New |
| Avoro Capital Advisors LLC | 3,333,333 | $219.7M | 2.16% | +3,333,333 | New |
| Geode Capital Management, LLC | 3,215,415 | $212.0M | 0.01% | +159,398+5.2% | Added |
| Bank of America Corp | 3,125,436 | $206.0M | 0.02% | +184,284+6.3% | Added |
| RTW Investments, LP | 2,721,158 | $179.4M | 1.78% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 2,205,758 | $145.4M | 0.02% | −165,921−7.0% | Reduced |
| UBS Group AG | 2,077,277 | $136.9M | 0.02% | +945,821+83.6% | Added |
| Polar Capital Holdings Plc | 1,661,248 | $109.5M | 0.48% | −761,364−31.4% | Reduced |
| Integral Health Asset Management, LLC | 1,600,000 | $105.5M | 5.58% | +200,000+14.3% | Added |
| Price T Rowe Associates Inc | 1,584,321 | $104.4M | 0.01% | −345,798−17.9% | Reduced |
| Morgan Stanley | 1,505,075 | $99.2M | 0.01% | +239,774+18.9% | Added |
| Paradigm Biocapital Advisors LP | 1,480,857 | $97.6M | 1.99% | +1,480,857 | New |
| Northern Trust Corp | 1,441,634 | $95.0M | 0.01% | +60,847+4.4% | Added |
| Charles Schwab Investment Management Inc | 1,397,045 | $92.1M | 0.01% | +13,608+1.0% | Added |
| Deep Track Capital, LP | 1,374,320 | $90.6M | 1.87% | −1,962,678−58.8% | Reduced |
| Capital International Investors | 1,338,803 | $88.2M | 0.02% | +160,023+13.6% | Added |
| Frazier Life Sciences Management, L.P. | 1,159,879 | $76.4M | 1.97% | +225,237+24.1% | Added |
| Citadel Advisors LLC | 1,099,858 | $72.5M | 0.05% | −63,079−5.4% | Reduced |
| Principal Financial Group Inc | 1,093,485 | $72.1M | 0.04% | +116,593+11.9% | Added |
| William Blair Investment Management, LLC | 1,087,591 | $71.7M | 0.24% | +1,087,591 | New |
| Bank of New York Mellon Corp | 1,006,185 | $66.3M | 0.01% | +151,876+17.8% | Added |
| Woodline Partners LP | 1,000,428 | $65.9M | 0.25% | −648,000−39.3% | Reduced |
| Balyasny Asset Management LLC | 992,545 | $65.4M | 0.13% | +992,545 | New |
| Royalty Pharma Sub-Manager, LLC | 980,392 | $64.6M | 37.40% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 898,951 | $59.2M | 0.08% | +145,334+19.3% | Added |
| Logos Global Management LP | 875,000 | $57.7M | 2.97% | +575,000+191.7% | Added |
| JPMorgan Chase & Co | 903,805 | $56.9M | 0.00% | −508,992−36.0% | Reduced |
| BNP Paribas Arbitrage, SA | 854,374 | $56.3M | 0.04% | +274,512+47.3% | Added |
| Melqart Asset Management (UK) Ltd | 843,949 | $55.6M | 5.48% | +221,051+35.5% | Added |
| Vanguard Fiduciary Trust Co | 799,622 | $52.7M | 0.01% | +799,622 | New |
| Qube Research & Technologies Ltd | 779,446 | $51.4M | 0.07% | +242,169+45.1% | Added |
| Capital Research Global Investors | 770,999 | $50.8M | 0.01% | +770,999 | New |
| Fisher Asset Management, LLC | 768,264 | $50.6M | 0.02% | −54,621−6.6% | Reduced |
| Armistice Capital, LLC | 764,538 | $50.4M | 1.66% | −228,228−23.0% | Reduced |
| Pictet Asset Management Holding SA | 750,953 | $49.3M | 0.05% | −6,610−0.9% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 714,344 | $47.1M | 0.05% | −113,519−13.7% | Reduced |
| D. E. Shaw & Co., Inc. | 706,631 | $46.6M | 0.04% | +587,410+492.7% | Added |
| Affinity Asset Advisors, LLC | 700,483 | $46.2M | 2.71% | −99,517−12.4% | Reduced |
| Federated Hermes, Inc. | 699,453 | $46.1M | 0.07% | +215,785+44.6% | Added |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. | 660,310 | $43.5M | 3.69% | −87,673−11.7% | Reduced |
| Marshall Wace, LLP | 656,608 | $43.3M | 0.05% | +319,577+94.8% | Added |
| ADAR1 Capital Management, LLC | 632,556 | $41.7M | 2.51% | +92,390+17.1% | Added |
| Point72 Asset Management, L.P. | 626,102 | $41.3M | 0.07% | +626,102 | New |
| Brown Advisory Inc | 614,655 | $40.5M | 0.07% | −116,499−15.9% | Reduced |
| Siren, L.L.C. | 613,952 | $40.5M | 1.12% | +613,952 | New |
| Foresite Capital Management IV, LLC | 503,295 | $33.2M | 13.99% | +45,000+9.8% | Added |
| MPM Oncology Impact Management LP | 500,000 | $33.0M | 2.54% | +500,000 | New |
| GW&K Investment Management, LLC | 494,619 | $32.6M | 0.29% | +22,256+4.7% | Added |
| Invesco Ltd. | 484,980 | $32.0M | 0.00% | +280,102+136.7% | Added |
| Standard Life Aberdeen plc | 483,274 | $31.9M | 0.05% | +2130.0% | Added |
| Eventide Asset Management, LLC | 479,098 | $31.6M | 0.52% | −513−0.1% | Reduced |
| American Century Companies Inc | 443,957 | $29.3M | 0.02% | +470.0% | Added |
| Alliancebernstein L.P. | 459,087 | $29.2M | 0.01% | +46,121+11.2% | Added |
| TD Asset Management Inc | 420,846 | $27.7M | 0.02% | −123,164−22.6% | Reduced |
| Franklin Resources Inc | 409,784 | $27.0M | 0.01% | −206−0.1% | Reduced |
| Rhumbline Advisers | 369,575 | $24.4M | 0.02% | +12,580+3.5% | Added |
| Group One Trading, L.P. | 363,997 | $24.0M | 0.79% | −43,256−10.6% | Reduced |
| Nuveen, LLC | 351,809 | $23.2M | 0.01% | −17,470−4.7% | Reduced |
| GSK plc | 340,434 | $22.4M | 3.74% | 00.0% | Unchanged |
| Candriam Luxembourg S.C.A. | 335,208 | $22.1M | 0.11% | +188,577+128.6% | Added |
| Gilder Gagnon Howe & Co LLC | 330,989 | $21.8M | 0.26% | −54,831−14.2% | Reduced |
| Massachusetts Financial Services Co | 311,649 | $20.5M | 0.01% | −15,553−4.8% | Reduced |
| Ameriprise Financial Inc | 302,802 | $20.0M | 0.00% | −243,003−44.5% | Reduced |
| E. Ohman J:or Asset Management AB | 300,762 | $19.8M | 0.52% | −62,200−17.1% | Reduced |
| 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 |
| Two Sigma Investments, LP | 285,008 | $18.8M | 0.02% | +10,991+4.0% | Added |
| First Turn Management, LLC | 283,700 | $18.7M | 2.09% | −41,968−12.9% | Reduced |
| Ikarian Capital, LLC | 283,572 | $18.7M | 2.67% | +110,900+64.2% | Added |
| Janus Henderson Group PLC | 282,121 | $18.6M | 0.01% | +25,909+10.1% | Added |
| Susquehanna Portfolio Strategies, LLC | 278,429 | $18.4M | 0.27% | 00.0% | Unchanged |
| Voya Investment Management LLC | 259,459 | $17.1M | 0.02% | +193,867+295.6% | Added |
| Citigroup Inc | 249,243 | $16.4M | 0.01% | +147,142+144.1% | Added |
| Handelsbanken Fonder AB | 247,300 | $16.3M | 0.05% | +41,500+20.2% | Added |
| Caption Management, LLC | 245,000 | $16.1M | 0.77% | +217,001+775.0% | Added |
| Capital World Investors | 242,041 | $16.0M | 0.00% | +242,041 | New |
| UBS Asset Management Americas Inc | 240,632 | $15.9M | 0.00% | +5,583+2.4% | Added |
| Swiss National Bank | 229,800 | $15.1M | 0.01% | +5,600+2.5% | Added |
| Sarissa Capital Management LP | 228,623 | $15.1M | 9.56% | −167,734−42.3% | Reduced |
| HSBC Holdings PLC | 221,999 | $14.6M | 0.01% | +218,303+5,906.5% | Added |
| DAFNA Capital Management LLC | 217,497 | $14.3M | 3.26% | −153,500−41.4% | Reduced |
| Freestone Grove Partners LP | 216,769 | $14.3M | 0.10% | +216,769 | New |
| Catalio Capital Management, LP | 215,501 | $14.2M | 2.97% | −42,880−16.6% | Reduced |
| Mirador Capital Partners LP | 202,673 | $13.4M | 1.89% | +4,115+2.1% | Added |
| Emerald Advisers, LLC | 198,811 | $13.1M | 0.41% | +198,811 | New |
| California Public Employees Retirement System | 198,530 | $13.1M | 0.01% | +9,129+4.8% | Added |
| Deutsche Bank AG | 187,138 | $12.3M | 0.00% | +11,334+6.4% | Added |
| Segall Bryant & Hamill, LLC | 180,200 | $11.9M | 0.17% | −9,313−4.9% | Reduced |
| Checkpoint Capital L.P. | 180,000 | $11.9M | 4.26% | +13,177+7.9% | Added |
| Pinnacle Associates Ltd | 177,062 | $11.7M | 0.15% | −13,937−7.3% | Reduced |
| Russell Investments Group, Ltd. | 174,029 | $11.5M | 0.01% | +36,339+26.4% | Added |
| Manufacturers Life Insurance Company, The | 167,124 | $11.0M | 0.01% | −23,683−12.4% | Reduced |
| AQR Capital Management LLC | 156,544 | $10.3M | 0.00% | −80,381−33.9% | Reduced |
| Legal & General Group Plc | 151,021 | $9.95M | 0.00% | −17,565−10.4% | Reduced |