Stock Ownership/GKOS

GLAUKOS CORP (GKOS): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in GKOS · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
23
13F filers
Aggregate Value
$1.3B
Across holders
Last Price
$185.65
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity16 increased5 reduced3 exited
Full exits: FARALLON CAPITAL MANAGEMENT LLC, ADAGE CAPITAL PARTNERS GP, L.L.C., Qube Research & Technologies Ltd
Institutional Holders of GKOS
↗
23 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
PRIMECAP MANAGEMENT CO/CA/
CIK 0000763212
Institutional Manager3.04M$425.0M31.8%0.3%Reduced$-46.1MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund1.58M$221.0M16.5%0.1%Added+$56.9MQ2 2026
Holocene Advisors, LP
CIK 0001700574
Hedge Fund1.51M$211.7M15.8%0.5%Added+$18.3MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund1.39M$194.3M14.5%0.0%Reduced$-192.0MQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund492K$68.7M5.1%0.1%Added—Q2 2026
Clearbridge Investments, LLC
CIK 0001348883
Hedge Fund431K$60.2M4.5%0.0%Added+$20.3MQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund315K$44.0M3.3%0.0%Added+$38.1MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund155K$21.7M1.6%0.0%Added—Q2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund147K$20.6M1.5%0.0%Added+$4.0MQ2 2026
Point72 Asset Management, L.P.
CIK 0001603466
Hedge Fund138K$19.3M1.4%0.0%Added+$5.2MQ2 2026
PRIMECAP MANAGEMENT CO/CA/Reduced
Institutional Manager
$425.0M· 31.8% of total· 0.3% port· 3.04M sh· $-46.1M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$221.0M· 16.5% of total· 0.1% port· 1.58M sh· +$56.9M QoQ· Q2 2026
Holocene Advisors, LPAdded
Hedge Fund
$211.7M· 15.8% of total· 0.5% port· 1.51M sh· +$18.3M QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$194.3M· 14.5% of total· 0.0% port· 1.39M sh· $-192.0M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$68.7M· 5.1% of total· 0.1% port· 492K sh· — QoQ· Q2 2026
Clearbridge Investments, LLCAdded
Hedge Fund
$60.2M· 4.5% of total· 0.0% port· 431K sh· +$20.3M QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$44.0M· 3.3% of total· 0.0% port· 315K sh· +$38.1M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$21.7M· 1.6% of total· 0.0% port· 155K sh· — QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCAdded
Hedge Fund
$20.6M· 1.5% of total· 0.0% port· 147K sh· +$4.0M QoQ· Q2 2026
Point72 Asset Management, L.P.Added
Hedge Fund
$19.3M· 1.4% of total· 0.0% port· 138K sh· +$5.2M QoQ· Q2 2026
FRED ALGER MANAGEMENT, LLCAdded
Hedge Fund
$17.6M· 1.3% of total· 0.1% port· 126K sh· $-9.4M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPUnchanged
Hedge Fund
$8.9M· 0.7% of total· 0.0% port· 63K sh· +$0 QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$8.0M· 0.6% of total· 0.0% port· 57K sh· $-27.1M QoQ· Q2 2026
Verition Fund Management LLCAdded
Hedge Fund
$6.5M· 0.5% of total· 0.0% port· 46K sh· +$3.5M QoQ· Q2 2026
Walleye Capital LLCAdded
Hedge Fund
$3.8M· 0.3% of total· 0.0% port· 27K sh· +$3.7M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$2.3M· 0.2% of total· 0.0% port· 16K sh· $-11.6M QoQ· Q2 2026
Squarepoint Ops LLCReduced
Hedge Fund
$2.0M· 0.1% of total· 0.0% port· 14K sh· $-13.1M QoQ· Q2 2026
Bridgewater Associates, LPAdded
Hedge Fund
$463K· 0.0% of total· 0.0% port· 3K sh· — QoQ· Q2 2026
GAMCO INVESTORS, INC. ET ALReduced
Institutional Manager
$453K· 0.0% of total· 0.0% port· 3K sh· $-4K QoQ· Q2 2026
Lighthouse Investment Partners, LLCAdded
Hedge Fund
$267K· 0.0% of total· 0.0% port· 2K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$138K· 0.0% of total· 0.0% port· 985 sh· +$115K QoQ· Q2 2026
Fulcrum Asset Management LLPAdded
Hedge Fund
$14K· 0.0% of total· 0.0% port· 96 sh· — QoQ· Q2 2026
Ancora Advisors, LLCUnchanged
Hedge Fund
$2K· 0.0% of total· 0.0% port· 12 sh· +$0 QoQ· Q2 2026
1–10 of 23
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