13F Insight
DOSSIER · 13F Holders · Q1 2026Healthcare · Surgical & Medical Instruments & ApparatusDefensive growthQuality
GKOS

GLAUKOS CORP

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

CUSIP 377322102·Surgical & Medical Instruments & Apparatus·351 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 0.1%
vs prior quarter
13F value held
$4.4B
78.0% inst. owned
of float
Holders
351
-142 QoQ
filers reporting
Activity
+20 / −13
+923 added · −921 reduced
this quarter
Concentration
22.42%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

351 institutions reported GKOS in Q1 2026. BlackRock, Inc. leads at 22.4% of the visible book. -142 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
$979M9.1M0.02%Q1 202602
JANUS HENDERSON GROUP PLC
CIK 0001274173
$576M5.3M0.27%Q1 202603
PRIMECAP MANAGEMENT CO/CA/
CIK 0000763212
$363M3.4M0.29%Q1 202604
Vanguard Portfolio Management
CIK 0002100121
$345M3.2M0.02%Q1 202605
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$270M2.5M0.01%Q1 202606
STATE STREET CORP
CIK 0000093751
$235M2.2M0.01%Q1 202607
AMERIPRISE FINANCIAL INC
CIK 0000820027
$173M1.6M0.04%Q1 202608
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$158M1.4M0.05%Q1 202609
Holocene Advisors, LP
CIK 0001700574
$149M1.4M0.36%Q1 202610
GOLDMAN SACHS GROUP INC
CIK 0000886982
$148M1.4M0.02%Q1 202611
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$146M1.4M0.01%Q1 202612
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$133M1.2M0.06%Q1 202613
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
CIK 0001644956
$116M1.1M0.38%Q1 202614
Capital World Investors
CIK 0001422849
$106M989K0.01%Q1 202615
Invesco Ltd.
CIK 0000914208
$98M914K0.02%Q1 202616
BRAIDWELL LP
CIK 0001920938
$82M764K2.74%Q1 202617
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$77M714K0.01%Q1 202618
MORGAN STANLEY
CIK 0000895421
$73M679K0.00%Q1 202619
BANK OF AMERICA CORP /DE/
CIK 0000070858
$71M657K0.01%Q1 202620
Delaware Management Holdings, Inc.
CIK 0000921739
$66M612K0.11%Q1 2026
Page 1 of 18
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