CYTK Cytokinetics, Incorporated
Cytokinetics, Incorporated (CYTK) Institutional Ownership
What the institutions did with CYTK last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 20.1M | 12.5% |
| T. Rowe Price Investment Management, Inc. | 18.7M | 11.7% |
| WELLINGTON MANAGEMENT GROUP LLP | 6.9M | 4.3% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.7M | 4.2% |
| STATE STREET CORP | 6.5M | 4.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.1M | 3.8% |
| FMR LLC | 5.0M | 3.1% |
| Avoro Capital Advisors LLC | 5.0M | 3.1% |
| BANK OF AMERICA CORP /DE/ | 4.6M | 2.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 3.7M | 2.3% |
| RTW INVESTMENTS, LP | 2.9M | 1.8% |
| Polar Capital Holdings Plc | 2.3M | 1.4% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 2.0M | 1.2% |
| GOLDMAN SACHS GROUP INC | 1.8M | 1.1% |
| Capital Research Global Investors | 1.7M | 1.1% |
| NORTHERN TRUST CORP | 1.6M | 1.0% |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 1.6M | 1.0% |
| Integral Health Asset Management, LLC | 1.6M | 1.0% |
| JPMORGAN CHASE & CO | 1.6M | 1.0% |
| Point72 Asset Management, L.P. | 1.6M | 1.0% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.6M | 1.0% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.5M | 1.0% |
| MORGAN STANLEY | 1.5M | 0.9% |
| PRINCIPAL FINANCIAL GROUP INC | 1.3M | 0.8% |
| Capital International Investors | 1.3M | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| FMR LLC | Reduced | 10.7M | 5.0M | -5.7M |
| BlackRock, Inc. | Increased | 16.5M | 20.1M | +3.5M |
| Avoro Capital Advisors LLC | Increased | 3.3M | 5.0M | +1.7M |
| BANK OF AMERICA CORP /DE/ | Increased | 3.1M | 4.6M | +1.5M |
| Paradigm Biocapital Advisors LP | Sold Out | 1.5M | 0 | -1.5M |
| T. Rowe Price Investment Management, Inc. | Increased | 17.5M | 18.7M | +1.2M |
| Holocene Advisors, LP | New | 0 | 1.1M | +1.1M |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 8.0M | 6.9M | -1.1M |
| Point72 Asset Management, L.P. | Increased | 626.1K | 1.6M | +961.6K |
| Capital Research Global Investors | Increased | 771.0K | 1.7M | +915.6K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Increased | 48.5K | 961.8K | +913.3K |
| UBS Group AG | Reduced | 2.1M | 1.2M | -906.0K |
| Logos Global Management LP | Sold Out | 875.0K | 0 | -875.0K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 5.8M | 6.7M | +868.0K |
| Invesco Ltd. | Increased | 485.0K | 1.2M | +750.3K |
| STATE STREET CORP | Increased | 5.7M | 6.5M | +749.0K |
| JPMORGAN CHASE & CO | Increased | 903.8K | 1.6M | +685.1K |
| Deep Track Capital, LP | Reduced | 1.4M | 700.0K | -674.3K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 899.0K | 1.5M | +650.5K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 5.5M | 6.1M | +628.9K |
| Polar Capital Holdings Plc | Increased | 1.7M | 2.3M | +592.4K |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Increased | 1.1M | 1.6M | +515.9K |
| MPM BIOIMPACT LLC | Sold Out | 500.0K | 0 | -500.0K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 3.2M | 3.7M | +497.1K |
| FRANKLIN RESOURCES INC | Increased | 409.8K | 891.1K | +481.3K |
| Hood River Capital Management LLC | New | 0 | 469.3K | +469.3K |
| CITADEL ADVISORS LLC | Reduced | 1.1M | 640.9K | -458.9K |
| GOLDMAN SACHS GROUP INC | Reduced | 2.2M | 1.8M | -444.2K |
| ARMISTICE CAPITAL, LLC | Increased | 764.5K | 1.2M | +436.8K |
| GW&K Investment Management, LLC | Increased | 494.6K | 916.1K | +421.5K |
| Pictet Asset Management Holding SA | Increased | 751.0K | 1.2M | +409.5K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 1.6M | 2.0M | +374.6K |
| GROUP ONE TRADING LLC | Sold Out | 364.0K | 0 | -364.0K |
| Aberdeen Group plc | Reduced | 483.3K | 119.4K | -363.8K |
| D. E. Shaw & Co., Inc. | Increased | 706.6K | 1.0M | +341.5K |
| Vestal Point Capital, LP | Sold Out | 300.0K | 0 | -300.0K |
| Checkpoint Capital L.P. | Increased | 180.0K | 475.0K | +295.0K |
| Ikarian Capital, LLC | Sold Out | 283.6K | 0 | -283.6K |
| Balyasny Asset Management L.P. | Reduced | 992.5K | 711.7K | -280.9K |
| BANK OF MONTREAL /CAN/ | Increased | 14.6K | 285.7K | +271.1K |
| Polaris Capital Management, LLC | New | 0 | 266.9K | +266.9K |
| Susquehanna Portfolio Strategies, LLC | Reduced | 278.4K | 14.1K | -264.3K |
| EMERALD ADVISERS, LLC | Increased | 198.8K | 458.0K | +259.1K |
| Caption Management, LLC | Sold Out | 245.0K | 0 | -245.0K |
| First Turn Management, LLC | Increased | 283.7K | 527.4K | +243.7K |
| Walleye Capital LLC | New | 0 | 239.7K | +239.7K |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Increased | 311.6K | 549.3K | +237.7K |
| PRINCIPAL FINANCIAL GROUP INC | Increased | 1.1M | 1.3M | +218.2K |
| Catalio Capital Management, LP | Sold Out | 215.5K | 0 | -215.5K |
| Foresite Capital Management IV, LLC | Increased | 503.3K | 714.7K | +211.4K |
| BAKER BROS. ADVISORS LP | New | 0 | 211.3K | +211.3K |
| Qube Research & Technologies Ltd | Reduced | 779.4K | 572.5K | -206.9K |
| NORTHERN TRUST CORP | Increased | 1.4M | 1.6M | +205.7K |
| MARSHALL WACE, LLP | Reduced | 656.6K | 451.5K | -205.1K |
| ExodusPoint Capital Management, LP | Increased | 52.2K | 249.3K | +197.0K |
| Tri Locum Partners LP | New | 0 | 194.0K | +194.0K |
| PFM Health Sciences, LP | New | 0 | 191.7K | +191.7K |
| STEMPOINT CAPITAL LP | Reduced | 259.2K | 75.6K | -183.6K |
| SPHERA FUNDS MANAGEMENT LTD. | Increased | 39.8K | 220.0K | +180.2K |
| ADAR1 Capital Management, LLC | Reduced | 632.6K | 457.9K | -174.6K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.