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, Q3 2025
Institutional positions in Cytokinetics Inc as of Sep 30, 2025. 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
- 381
- +76 vs. Q2 2025
- Shares held
- 140.9M
- +4.52M (+3.3%) vs. Q2 2025
- Total value
- $7.75B
- +$3.24B (+71.8%) vs. Q2 2025
- New holders
- 101
- 126 more added
- Sold out
- 25
- 102 more reduced
7 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Cytokinetics Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Eventide Asset Management, LLC | 170,108 | $9.35M | 0.15% | −79,392−31.8% | Reduced |
| Impax Asset Management Group plc | 175,000 | $9.62M | 0.06% | 00.0% | Unchanged |
| Marshall Wace, LLP | 178,980 | $9.84M | 0.01% | +157,755+743.3% | Added |
| Legal & General Group Plc | 179,650 | $9.87M | 0.00% | −2,087−1.1% | Reduced |
| GW&K Investment Management, LLC | 180,670 | $9.93M | 0.09% | +180,670 | New |
| Segall Bryant & Hamill, LLC | 181,050 | $9.95M | 0.13% | +97,280+116.1% | Added |
| Hudson Bay Capital Management LP | 182,131 | $10.0M | 0.06% | +24,345+15.4% | Added |
| Schroder Investment Management Group | 186,883 | $10.1M | 0.01% | −124,008−39.9% | Reduced |
| Group One Trading, L.P. | 187,969 | $10.3M | 0.31% | −145,313−43.6% | Reduced |
| Manufacturers Life Insurance Company, The | 191,897 | $10.5M | 0.01% | +16,618+9.5% | Added |
| Mirador Capital Partners LP | 197,367 | $10.8M | 1.54% | +53,020+36.7% | Added |
| Boxer Capital Management, LLC | 200,000 | $11.0M | 3.50% | +200,000 | New |
| Pinnacle Associates Ltd | 201,490 | $11.1M | 0.15% | −7,037−3.4% | Reduced |
| Silverarc Capital Management, LLC | 211,000 | $11.6M | 1.68% | +211,000 | New |
| Swiss National Bank | 219,900 | $12.1M | 0.01% | +3,700+1.7% | Added |
| Ikarian Capital, LLC | 222,674 | $12.2M | 2.77% | −10,790−4.6% | Reduced |
| Handelsbanken Fonder AB | 234,500 | $12.9M | 0.04% | +202,200+626.0% | Added |
| Alliancebernstein L.P. | 235,416 | $12.9M | 0.00% | −1,150,537−83.0% | Reduced |
| UBS Asset Management Americas Inc | 238,382 | $13.1M | 0.00% | −177,871−42.7% | Reduced |
| BNP Paribas Arbitrage, SA | 247,465 | $13.6M | 0.01% | −42,780−14.7% | Reduced |
| First Turn Management, LLC | 254,795 | $14.0M | 2.10% | +254,795 | New |
| Rhenman & Partners Asset Management AB | 255,250 | $14.0M | 1.55% | +151,000+144.8% | Added |
| Quinn Opportunity Partners LLC | 273,661 | $15.0M | 1.10% | +78,722+40.4% | Added |
| Susquehanna Portfolio Strategies, LLC | 278,429 | $15.3M | 0.24% | +14,100+5.3% | Added |
| Renaissance Technologies LLC | 289,967 | $15.9M | 0.02% | +279,800+2,752.0% | Added |
| Pentwater Capital Management LP | 300,000 | $16.5M | 0.15% | 00.0% | Unchanged |
| Millennium Management LLC | 342,533 | $18.8M | 0.01% | −116,144−25.3% | Reduced |
| Affinity Asset Advisors, LLC | 350,000 | $19.2M | 1.79% | +350,000 | New |
| Nuveen, LLC | 370,915 | $20.4M | 0.01% | +63,416+20.6% | Added |
| Rhumbline Advisers | 385,813 | $21.2M | 0.02% | −4,127−1.1% | Reduced |
| Gilder Gagnon Howe & Co LLC | 389,055 | $21.4M | 0.22% | +197,940+103.6% | Added |
| DAFNA Capital Management LLC | 394,940 | $21.7M | 5.36% | −3,160−0.8% | Reduced |
| Barclays PLC | 398,075 | $21.9M | 0.01% | −94,739−19.2% | Reduced |
| Rosalind Advisors, Inc. | 400,000 | $22.0M | 7.98% | 00.0% | Unchanged |
| E. Ohman J:or Asset Management AB | 407,037 | $22.4M | 0.53% | 00.0% | Unchanged |
| Franklin Resources Inc | 409,725 | $22.5M | 0.01% | +6,936+1.7% | Added |
| American Century Companies Inc | 429,203 | $23.6M | 0.01% | −3,528−0.8% | Reduced |
| Catalio Capital Management, LP | 451,581 | $24.8M | 4.59% | −149,858−24.9% | Reduced |
| Foresite Capital Management IV, LLC | 458,295 | $25.2M | 13.79% | +458,295 | New |
| Point72 Asset Management, L.P. | 471,482 | $25.9M | 0.06% | +471,482 | New |
| Massachusetts Financial Services Co | 496,673 | $27.3M | 0.01% | −929−0.2% | Reduced |
| AQR Capital Management LLC | 513,290 | $28.2M | 0.02% | +165,551+47.6% | Added |
| ADAR1 Capital Management, LLC | 518,921 | $28.5M | 2.82% | −63,226−10.9% | Reduced |
| Ameriprise Financial Inc | 564,547 | $31.0M | 0.01% | +219,581+63.7% | Added |
| Sarissa Capital Management LP | 588,357 | $32.3M | 17.93% | 00.0% | Unchanged |
| TD Asset Management Inc | 671,780 | $36.9M | 0.03% | +127,488+23.4% | Added |
| Vestal Point Capital, LP | 725,000 | $39.8M | 1.81% | −2,250,000−75.6% | Reduced |
| Fisher Asset Management, LLC | 761,587 | $41.9M | 0.02% | +27,907+3.8% | Added |
| Melqart Asset Management (UK) Ltd | 783,774 | $43.1M | 5.75% | −542,945−40.9% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 785,000 | $43.1M | 0.11% | +108,720+16.1% | Added |
| Bank of New York Mellon Corp | 869,231 | $47.8M | 0.01% | −5,072−0.6% | Reduced |
| Frazier Life Sciences Management, L.P. | 890,445 | $48.9M | 1.47% | +335,714+60.5% | Added |
| Brown Advisory Inc | 912,186 | $50.1M | 0.07% | −83,113−8.4% | Reduced |
| Standard Life Aberdeen plc | 927,832 | $51.0M | 0.08% | +4,903+0.5% | Added |
| Susquehanna International Group, LLP | 1,017,801 | $55.9M | 0.08% | +296,987+41.2% | Added |
| Pictet Asset Management Holding SA | 1,145,558 | $62.9M | 0.06% | −400,833−25.9% | Reduced |
| Principal Financial Group Inc | 1,174,448 | $64.5M | 0.03% | −10,357−0.9% | Reduced |
| Capital International Investors | 1,178,780 | $64.8M | 0.01% | +10,670+0.9% | Added |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. | 1,192,484 | $65.5M | 5.06% | +109,921+10.2% | Added |
| Armistice Capital, LLC | 1,196,868 | $65.8M | 2.06% | −115,481−8.8% | Reduced |
| Charles Schwab Investment Management Inc | 1,373,883 | $75.5M | 0.01% | +16,766+1.2% | Added |
| Citadel Advisors LLC | 1,386,065 | $76.2M | 0.06% | +87,456+6.7% | Added |
| Integral Health Asset Management, LLC | 1,400,000 | $76.9M | 5.61% | +400,000+40.0% | Added |
| Northern Trust Corp | 1,406,832 | $77.3M | 0.01% | +27,641+2.0% | Added |
| Morgan Stanley | 1,521,186 | $83.6M | 0.01% | +403,106+36.1% | Added |
| JPMorgan Chase & Co | 1,542,857 | $84.8M | 0.01% | +225,443+17.1% | Added |
| Goldman Sachs Group Inc | 1,634,723 | $89.8M | 0.01% | +360,740+28.3% | Added |
| Woodline Partners LP | 1,647,725 | $90.6M | 0.43% | +1,435,422+676.1% | Added |
| UBS Group AG | 1,803,251 | $99.1M | 0.02% | −1,267,414−41.3% | Reduced |
| Price T Rowe Associates Inc | 2,366,848 | $130.1M | 0.01% | +500,871+26.8% | Added |
| RTW Investments, LP | 2,721,158 | $149.6M | 1.84% | 00.0% | Unchanged |
| Polar Capital Holdings Plc | 2,782,930 | $152.9M | 0.74% | −15,471−0.6% | Reduced |
| Geode Capital Management, LLC | 3,040,202 | $167.1M | 0.01% | +45,757+1.5% | Added |
| Bank of America Corp | 3,061,796 | $168.3M | 0.01% | +416,228+15.7% | Added |
| Deep Track Capital, LP | 4,300,000 | $236.3M | 6.60% | +650,000+17.8% | Added |
| State Street Corp | 5,617,334 | $308.7M | 0.01% | −755,419−11.9% | Reduced |
| Wellington Management Group LLP | 7,408,561 | $407.2M | 0.07% | −419,118−5.4% | Reduced |
| Vanguard Group Inc | 11,856,795 | $651.6M | 0.01% | −127,043−1.1% | Reduced |
| FMR LLC | 13,091,647 | $719.5M | 0.04% | +1,824,136+16.2% | Added |
| BlackRock, Inc. | 15,525,747 | $853.3M | 0.02% | −152,120−1.0% | Reduced |
| T. Rowe Price Investment Management, Inc. | 19,080,496 | $1.05B | 0.64% | +1,478,056+8.4% | Added |
| OrbiMed Advisors LLC | 0 | $0 | 0.00% | −1,077,000−100.0% | Sold out |
| Capital Fund Management S.A. | 0 | $0 | 0.00% | −154,381−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −151,290−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −106,108−100.0% | Sold out |
| Superstring Capital Management LP | 0 | $0 | 0.00% | −61,103−100.0% | Sold out |
| Panagora Asset Management Inc | 0 | $0 | 0.00% | −44,635−100.0% | Sold out |
| Zweig-DiMenna Associates LLC | 0 | $0 | 0.00% | −35,600−100.0% | Sold out |
| Ontario Teachers Pension Plan Board | 0 | $0 | 0.00% | −29,135−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −28,159−100.0% | Sold out |
| Tejara Capital Ltd | 0 | $0 | 0.00% | −18,300−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −15,275−100.0% | Sold out |
| Nebula Research & Development LLC | 0 | $0 | 0.00% | −12,411−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −10,894−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −6,586−100.0% | Sold out |
| Allostery Investments LP | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −2,055−100.0% | Sold out |
| Chilton Capital Management LLC | 0 | $0 | 0.00% | −2,000−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −1,498−100.0% | Sold out |
| Mount Yale Investment Advisors, LLC | 0 | $0 | 0.00% | −337−100.0% | Sold out |