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GKOS in the 13F filings

Glaukos Corp · CUSIP 377322102

Sector · Medical devices and instrumentsTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Surgical, medical and electromedical devices
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
29
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 6 listed it in both
Shares listed
15,926,527
combined, among listed positions
Reported value
$2.2bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 19 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +790,111.

Managers listing GKOS in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

29 of 29 holders

ActionFiling
Janus Henderson Group Ltd4,862,894$680m0.28%Trimmed-485,50114 Aug 2026 (the filing on sec.gov)
Millennium Management LLC1,581,016$221m0.08%Added+407,32014 Aug 2026 (the filing on sec.gov)
Holocene Advisors LP1,514,931$212m0.48%Added+131,21614 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC1,390,017$194munder 0.1%Trimmed-56,9092 Sep 2026 (the filing on sec.gov)
Capital World Investors1,015,943$142munder 0.1%Added+26,88312 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP1,254,703$135munder 0.1%Trimmed-142,85314 Aug 2026 (the filing on sec.gov)
Invesco Ltd706,877$99munder 0.1%Trimmed-207,31114 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc679,632$95munder 0.1%Added+343,20714 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC491,636$69m0.09%Newnew14 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP428,215$60munder 0.1%Added+279,06514 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)377,485$53munder 0.1%Added+74,21913 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP314,804$44munder 0.1%Added+280,70513 Aug 2026 (the filing on sec.gov)
Artisan Partners LP309,266$43m0.07%Trimmed-298,19613 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC300,752$42munder 0.1%Added+152,85827 Oct 2026 (the filing on sec.gov)
Arrowstreet Capital LP154,929$22munder 0.1%Newnew13 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC147,192$21munder 0.1%Added+28,30013 Aug 2026 (the filing on sec.gov)
Point72 Asset Management LP138,300$19munder 0.1%Added+36,96014 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP63,430$8.9munder 0.1%Held014 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.57,184$8.0munder 0.1%Trimmed-193,99214 Aug 2026 (the filing on sec.gov)
Verition Fund Management LLC46,323$6.5munder 0.1%Added+25,20314 Aug 2026 (the filing on sec.gov)
Walleye Capital LLC26,835$3.8munder 0.1%Newnew3 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC16,401$2.3munder 0.1%Added+2,07514 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC14,167$2.0munder 0.1%Trimmed-93,88214 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP13,813$1.9munder 0.1%Trimmed-21,25914 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC5,885$822kunder 0.1%Added+3,99813 Aug 2026 (the filing on sec.gov)
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Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (6)

Exited (3)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
7 in Q3 2024 to 9 in Q2 2026

Tracked managers listing it, at least.

051015201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
GKOS by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20152$9.0mn.a.n.a.
Q3 20152$18mn.a.n.a.
Q4 20152$38mn.a.n.a.
Q1 20161$22mn.a.n.a.
Q2 20163$62mn.a.n.a.
Q3 20164$86mn.a.n.a.
Q4 20165$125mn.a.n.a.
Q1 20179$307mn.a.n.a.
Q2 20176$341mn.a.n.a.
Q3 20173$216mn.a.n.a.
Q4 20174$238mn.a.n.a.
Q1 20184$289mn.a.n.a.
Q2 20185$381mn.a.n.a.
Q3 20186$546mn.a.n.a.
Q4 20185$421mn.a.n.a.
Q1 20196$380mn.a.n.a.
Q2 20197$461mn.a.n.a.
Q3 20195$421mn.a.n.a.
Q4 20196$420mn.a.n.a.
Q1 20206$259mn.a.n.a.
Q2 20206$330mn.a.n.a.
Q3 20207$495mn.a.n.a.
Q4 20206$742mn.a.n.a.
Q1 20218$1.1bnn.a.n.a.
Q2 20217$857mn.a.n.a.
Q3 202111$539mn.a.n.a.
Q4 202111$452mn.a.n.a.
Q1 20228$622mn.a.n.a.
Q2 20228$497mn.a.n.a.
Q3 202211$492mn.a.n.a.
Q4 20229$435mn.a.n.a.
Q1 20239$510mn.a.n.a.
Q2 20238$729mn.a.n.a.
Q3 20237$551mn.a.n.a.
Q4 20239$768m71
Q1 20246$1.1bn21
Q2 20247$1.4bn14
Q3 20247$1.5bn14
Q4 202410$1.9bn35
Q1 202510$1.3bn62
Q2 202510$1.6bn63
Q3 20259$736m43
Q4 20257$1.0bn1316
Q1 20268$1.2bn1610
Q2 20269$1.5bn1912

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

GKOS and LLY →GKOS and JNJ →GKOS and VRTX →Choose a stock to compare with GKOS →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own GKOS, latest filings →Back to the 13F Explorer →