Who owns CYTOKINETICS INC?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of CYTK from SEC Form 13F filings across 481 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 481 institutions disclosed 160.2M shares of CYTOKINETICS INC worth $13.64B — about 121300.3% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
481
13F holders
$13.64B
value, 2026 filers
121300.3%
of shares outstanding (160.2M sh)
100
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of CYTK's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 20.1M | $1.71B | 0.0% | 15213.1% | +21.4% |
| 2 | T. Rowe Price Investment Management, Inc. | 18.7M | $1.59B | 1.0% | 14171.4% | +6.8% |
| 3 | WELLINGTON MANAGEMENT GROUP LLP | 6.9M | $590.5M | 0.1% | 5247.9% | -13.5% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 6.7M | $571.8M | 0.0% | 5081.4% | +14.9% |
| 5 | STATE STREET CORP | 6.5M | $553.2M | 0.0% | 4916.7% | +13.0% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 6.1M | $521.2M | 0.0% | 4631.5% | +11.5% |
| 7 | FMR LLC | 5.0M | $428.7M | 0.0% | 3809.5% | -53.1% |
| 8 | Avoro Capital Advisors LLC | 5.0M | $425.9M | 3.8% | 3785.4% | +50.0% |
| 9 | BANK OF AMERICA CORP /DE/ | 4.6M | $394.9M | 0.0% | 3509.6% | +48.3% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 3.7M | $316.3M | 0.0% | 2810.7% | +15.5% |
| 11 | RTW INVESTMENTS, LP | 2.9M | $243.8M | 2.1% | 2166.8% | +5.2% |
| 12 | Polar Capital Holdings Plc | 2.3M | $192.0M | 0.5% | 1706.2% | +35.7% |
| 13 | PRICE T ROWE ASSOCIATES INC /MD/ | 2.0M | $166.9M | 0.0% | 1483.1% | +23.6% |
| 14 | GOLDMAN SACHS GROUP INC | 1.8M | $150.1M | 0.0% | 1333.7% | -20.1% |
| 15 | Capital Research Global Investors | 1.7M | $143.7M | 0.0% | 1276.9% | +118.8% |
| 16 | NORTHERN TRUST CORP | 1.6M | $140.3M | 0.0% | 1247.2% | +14.3% |
| 17 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 1.6M | $136.6M | 0.4% | 1213.9% | +47.4% |
| 18 | Integral Health Asset Management, LLC | 1.6M | $136.3M | 5.4% | 1211.3% | 0.0% |
| 19 | JPMORGAN CHASE & CO | 1.6M | $139.2M | 0.0% | 1202.9% | +75.8% |
| 20 | Point72 Asset Management, L.P. | 1.6M | $135.3M | 0.1% | 1202% | +153.6% |
| 21 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.6M | $133.4M | 0.0% | 1185.4% | +12.1% |
| 22 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.5M | $132.0M | 0.0% | 1173.1% | +72.4% |
| 23 | MORGAN STANLEY | 1.5M | $128.7M | 0.0% | 1143.4% | +0.3% |
| 24 | PRINCIPAL FINANCIAL GROUP INC | 1.3M | $111.7M | 0.1% | 993% | +20.0% |
| 25 | Capital International Investors | 1.3M | $111.2M | 0.0% | 988.6% | -2.5% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.