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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
31 Mar 2025
the date the book describes
Filed
5 Nov 2026
latest of these filings; the earliest 12 May 2025
Managers listing it
10
at least, of 95 tracked, among listed positions
Comparable managers
95
filed both Q4 2024 and Q1 2025; 8 listed it in both
Shares listed
13,002,308
combined, among listed positions
Reported value
$1.3bn
combined, at the quarter end

Among the 95 comparable managers: 6 buyers (opened or added shares) and 2 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.

Managers listing GKOS in Q1 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2024, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

10 of 10 holders

ActionFiling
Fidelity (FMR LLC)6,537,647$643munder 0.1%Added+425,8915 Nov 2026 (the filing on sec.gov)
Wellington Management Group LLP2,290,790$225munder 0.1%Added+131,25113 May 2025 (the filing on sec.gov)
AllianceBernstein LP1,277,539$126munder 0.1%Added+461,38615 May 2025 (the filing on sec.gov)
Janus Henderson Group Ltd900,367$92m0.05%Trimmed-192,05015 May 2025 (the filing on sec.gov)
Holocene Advisors LP746,768$73m0.21%Added+437,29915 May 2025 (the filing on sec.gov)
Capital World Investors550,322$54munder 0.1%Held012 May 2025 (the filing on sec.gov)
Marshall Wace LLP344,771$34munder 0.1%Newnew15 May 2025 (the filing on sec.gov)
Artisan Partners LP302,393$30munder 0.1%Trimmed-169,45614 May 2025 (the filing on sec.gov)
ExodusPoint Capital Management LP49,111$4.8munder 0.1%Newnew14 May 2025 (the filing on sec.gov)
Farallon Capital Management LLC2,600$256kunder 0.1%Held015 May 2025 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2024 to Q1 2025, 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 (2)

Exited (0)

No exit shown by a manager’s own filing.

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 →