L3VLUP
ProSign in

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 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
26
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 7 listed it in both
Shares listed
15,136,416
combined, among listed positions
Reported value
$1.6bn
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: 16 buyers (opened or added shares) and 10 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,595,477.

Managers listing GKOS in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

26 of 26 holders

ActionFiling
Janus Henderson Group Ltd5,348,395$576m0.27%Added+2,329,60818 May 2026 (the filing on sec.gov)
AllianceBernstein LP1,397,556$158m0.05%Trimmed-245,89215 May 2026 (the filing on sec.gov)
Citadel Advisors LLC1,446,926$156munder 0.1%Added+1,419,97015 May 2026 (the filing on sec.gov)
Holocene Advisors LP1,383,715$149m0.36%Added+84,42115 May 2026 (the filing on sec.gov)
Millennium Management LLC1,173,696$126m0.05%Trimmed-436,00315 May 2026 (the filing on sec.gov)
Capital World Investors989,060$106munder 0.1%Added+138,16713 May 2026 (the filing on sec.gov)
Invesco Ltd914,188$98munder 0.1%Added+133,92112 May 2026 (the filing on sec.gov)
Artisan Partners LP607,462$65m0.10%Trimmed-95,35613 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc336,425$36munder 0.1%Added+214,25615 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)303,266$33munder 0.1%Added+293,18315 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.251,176$27munder 0.1%Trimmed-307,11415 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP179,728$19m0.15%Newnew14 May 2026 (the filing on sec.gov)
Wellington Management Group LLP149,150$16munder 0.1%Trimmed-337,67415 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC147,894$16munder 0.1%Added+94,11627 Oct 2026 (the filing on sec.gov)
Renaissance Technologies LLC118,892$13munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC108,049$12munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Point72 Asset Management LP101,340$11munder 0.1%Trimmed-60,25615 May 2026 (the filing on sec.gov)
Two Sigma Investments LP63,430$6.8munder 0.1%Trimmed-35,22115 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP35,072$3.8munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Marshall Wace LLP34,099$3.7munder 0.1%Added+26,85515 May 2026 (the filing on sec.gov)
Verition Fund Management LLC21,120$2.3munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
AQR Capital Management LLC14,326$1.5munder 0.1%Trimmed-1,24615 May 2026 (the filing on sec.gov)
Winton Group Ltd3,700$398kunder 0.1%Newnew12 May 2026 (the filing on sec.gov)
GAMCO Investors Inc3,264$351kunder 0.1%Trimmed-43714 May 2026 (the filing on sec.gov)
Farallon Capital Management LLC2,600$280kunder 0.1%Held015 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 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 (1)

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 →