AI Holders Summary · Q2 2026

377 institutions reported GKOS in Q2 2026. BlackRock, Inc. leads at 21.9% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(4 on this page)

#HolderValueShares% port.Quarter

BlackRock, Inc.

CIK 0002012383

$1.3B9.5M0.02%Q2 2026 02

Jupiter Topco LLC

CIK 0002146052

$680M4.9M0.28%Q2 2026 03

JANUS HENDERSON GROUP PLC

CIK 0001274173

$576M5.3M0.27%Q1 2026 04

Vanguard Portfolio Management

CIK 0002100121· Index

$464M3.3M0.02%Q2 2026 05

PRIMECAP MANAGEMENT CO/CA/

CIK 0000763212

$425M3.0M0.25%Q2 2026 06

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$357M2.6M0.01%Q2 2026 07

STATE STREET CORP

CIK 0000093751

$324M2.3M0.01%Q2 2026 08

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$225M1.6M0.08%Q2 2026 09

Holocene Advisors, LP

CIK 0001700574

$212M1.5M0.48%Q2 2026 10

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$205M1.5M0.01%Q2 2026 11

CITADEL ADVISORS LLC

CIK 0001423053

$204M1.5M0.02%Q2 2026 12

AMERIPRISE FINANCIAL INC

CIK 0000820027

$184M1.3M0.04%Q2 2026 13

ALLIANCEBERNSTEIN L.P.

CIK 0001109448

$158M1.4M0.05%Q1 2026 14

Capital World Investors

CIK 0001422849

$142M1.0M0.02%Q2 2026 15

GOLDMAN SACHS GROUP INC

CIK 0000886982

$125M897K0.01%Q2 2026 16

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

CIK 0000884546· Index

$105M753K0.01%Q2 2026 17

Invesco Ltd.

CIK 0000914208

$99M707K0.01%Q2 2026 18

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

CIK 0001644956

$92M662K0.28%Q2 2026 19

DRIEHAUS CAPITAL MANAGEMENT LLC

CIK 0000938206

$91M651K0.53%Q2 2026 20

Delaware Management Holdings, Inc.

CIK 0000921739

$90M647K0.14%Q2 2026

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