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CYTK · Cytokinetics Inc

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$77.18 -0.56 (-0.72%) At close · Aug 20
Market Cap
$10.65B
Shares
139.02M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 484
Total Value: $14,279,388,072
Total Shares: 167,618,129

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 484 13F filers · Δ vs Mar 31, 2026
Top Holder
12.0%
Sep 2023 → Jun 2026 · range 9.6% – 14.1%
+0.8 pts
Top 5
35.2%
Sep 2023 → Jun 2026 · range 33.7% – 46.5%
−2.3 pts
Top 10
49.8%
Sep 2023 → Jun 2026 · range 46.4% – 58.6%
−1.0 pts
HHI
396
Sep 2023 → Jun 2026 · range 331 – 545
Broadly held−2

Quarterly Activity

vs Mar 31, 2026
New
92
Increased
237
Decreased
107
Sold Out
59
Unchanged
48
Holder count: +33
Institutional value: +38.3%
Shares held: +7.0%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 507
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1061983 CUSIP 23282W605 13F (30d) 443 filings 439 filers Visit website Investor relations