13F Insight
DOSSIER · 13F Holders · Q1 2026Most-boughtAI cap-ex
CYTK

CYTOKINETICS INC

469 institutions still hold CYTOKINETICS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 23282w605·469 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 0.2%
vs prior quarter
13F value held
$5.6B
67.0% inst. owned
of float
Holders
469
-47 QoQ
filers reporting
Activity
+8 / −52
+790 added · −825 reduced
this quarter
Concentration
19.51%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

469 institutions reported CYTK in Q1 2026. BlackRock, Inc. leads at 19.5% of the visible book. -47 net institutions QoQ — distribution reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$1.1B16.5M0.02%Q1 202602
FMR LLC
CIK 0000315066
$707M10.7M0.04%Q1 202603
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$528M8.0M0.10%Q1 202604
Vanguard Portfolio Management
CIK 0002100121· Index
$385M5.8M0.02%Q1 202605
STATE STREET CORP
CIK 0000093751
$379M5.7M0.01%Q1 202606
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$362M5.5M0.01%Q1 202607
Avoro Capital Advisors LLC
CIK 0001633313
$220M3.3M2.16%Q1 202608
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$212M3.2M0.01%Q1 202609
BANK OF AMERICA CORP /DE/
CIK 0000070858
$206M3.1M0.02%Q1 202610
RTW INVESTMENTS, LP
CIK 0001493215
$179M2.7M1.78%Q1 202611
ARMISTICE CAPITAL, LLC
CIK 0001601086
$176M2.7M3.12%Q1 202612
Integral Health Asset Management, LLC
CIK 0001773206
$171M2.6M8.20%Q1 202613
GOLDMAN SACHS GROUP INC
CIK 0000886982
$162M2.5M0.02%Q1 202614
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$147M2.2M0.02%Q1 202615
UBS Group AG
CIK 0001610520
$139M2.1M0.02%Q1 202616
Caption Management, LLC
CIK 0001706766
$122M1.9M0.71%Q1 202617
Polar Capital Holdings Plc
CIK 0001837309
$109M1.7M0.39%Q1 202618
CITADEL ADVISORS LLC
CIK 0001423053
$100M1.6M0.01%Q4 202519
MORGAN STANLEY
CIK 0000895421
$99M1.5M0.01%Q1 202620
Paradigm Biocapital Advisors LP
CIK 0001855655
$98M1.5M1.99%Q1 2026
Page 1 of 24
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