Glaukos Corporation
DE ˙ DB ˙ US3773221029
96,50 € ↑2,50 (2,66%)
2026-06-04
DEL PRIS
SecurityDE:6GJ / Glaukos Corporation
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership5,348,395 shares
Ownership 9.20%
Janus Henderson Group Plc ownership in 6GJ / Glaukos Corporation

2026-05-15 - Janus Henderson Group Plc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 5,348,395 shares of Glaukos Corporation (DE:6GJ). This represents 9.2 percent ownership of the company. In their previous filing dated 2026-02-17 , Janus Henderson Group Plc had reported owning 3,018,787 shares, indicating an increase of 77.17 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2026-05-15 2026-05-15 13G/A 3,018,787 5,348,395 77.17 9.20 73.58
2026-02-17 2026-02-17 13G 1,725,973 3,018,787 74.90 5.30 12.77
2020-02-14 2020-02-14 13G/A 2,115,992 1,725,973 -18.43 4.70 -20.34
2019-02-12 2019-02-12 13G/A 3,137,873 2,115,992 -32.57 5.90 -33.71
2018-10-10 2018-10-10 13G/A 5,098,591 3,137,873 -38.46 8.90 -39.86
2018-02-12 2018-02-12 13G/A 4,068,125 5,098,591 25.33 14.80 25.42
2017-11-13 2017-11-13 13G 4,068,125 11.80

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-18 2026-03-31 13F/A-1 GLAUKOS COM 377322102 5,348,395 2,329,608 77.17 575,844 68.94 0.0971
2026-05-15 2026-03-31 13F GLAUKOS COM 377322102 5,348,395 2,329,608 575,844 0.1068
2026-02-17 2025-12-31 13F GLAUKOS COM 377322102 3,018,787 1,953,578 183.40 340,855 292.39 0.1526
2025-11-14 2025-09-30 13F GLAUKOS COM 377322102 1,065,209 -21,985 -2.02 86,867 -22.65 0.0397
2025-08-14 2025-06-30 13F GLAUKOS COM 377322102 1,087,194 186,827 20.75 112,297 22.28 0.0550
2025-05-15 2025-03-31 13F GLAUKOS COM 377322102 900,367 -192,050 -17.58 91,837 -43.94 0.0503
2025-02-14 2024-12-31 13F GLAUKOS COM 377322102 1,092,417 -233,367 -17.60 163,804 -5.16 0.0833
2024-11-14 2024-09-30 13F GLAUKOS COM 377322102 1,325,784 -131,749 -9.04 172,720 0.13 0.0884
2024-08-14 2024-06-30 13F GLAUKOS COM 377322102 1,457,533 -153,355 -9.52 172,496 13.57 0.0924
2024-05-15 2024-03-31 13F GLAUKOS COM 377322102 1,610,888 -5,646 -0.35 151,888 18.20 0.0829
2024-02-14 2023-12-31 13F GLAUKOS COM 377322102 1,616,534 1,357 0.08 128,499 5.72 0.0766
2023-11-14 2023-09-30 13F GLAUKOS COM 377322102 1,615,177 -3,824 -0.24 121,541 5.42 0.0796
2023-08-14 2023-06-30 13F GLAUKOS COM 377322102 1,619,001 36,605 2.31 115,290 45.43 0.0717
2023-05-15 2023-03-31 13F GLAUKOS COM 377322102 1,582,396 11,452 0.73 79,277 15.53 0.0523
2023-02-14 2022-12-31 13F GLAUKOS COM 377322102 1,570,944 -10,365 -0.66 68,619 -18.49 0.0490
2023-01-13 2022-09-30 13F/A-1 GLAUKOS COM 377322102 1,581,309 -289,958 -15.50 84,189 -0.95 0.0631
2022-11-14 2022-09-30 13F GLAUKOS COM 377322102 1,581,309 -289,958 84,189 0.0630
2022-08-15 2022-06-30 13F GLAUKOS COM 377322102 1,871,267 1,198 0.06 84,994 -21.39 0.0586
2022-05-16 2022-03-31 13F GLAUKOS COM 377322102 1,870,069 290,043 18.36 108,127 53.99 0.0522
2022-02-14 2021-12-31 13F GLAUKOS COM 377322102 1,580,026 17,707 1.13 70,217 -6.70 0.0293
2021-11-16 2021-09-30 13F GLAUKOS COM 377322102 1,562,319 1,116 0.07 75,257 -43.18 0.0329
2021-08-16 2021-06-30 13F GLAUKOS COM 377322102 1,561,203 95,237 6.50 132,437 7.64 0.0567
2021-05-17 2021-03-31 13F GLAUKOS COM 377322102 1,465,966 -89,685 -5.77 123,039 5.09 0.0562
2021-02-16 2020-12-31 13F GLAUKOS COM 377322102 1,555,651 -236,915 -13.22 117,078 31.89 0.0544
2020-11-16 2020-09-30 13F GLAUKOS COM 377322102 1,792,566 65,077 3.77 88,768 33.75 0.0463
2020-08-14 2020-06-30 13F GLAUKOS COM 377322102 1,727,489 -666,431 -27.84 66,370 -10.16 0.0373
2020-05-14 2020-03-31 13F GLAUKOS COM 377322102 2,393,920 667,947 38.70 73,876 -21.42 0.0508
2020-02-18 2019-12-31 13F GLAUKOS COM 377322102 1,725,973 209,827 13.84 94,014 -0.80 0.0481
2019-11-14 2019-09-30 13F GLAUKOS COM 377322102 1,516,146 445,332 41.59 94,774 17.38 0.0513
2019-07-31 2019-06-30 13F GLAUKOS COM 377322102 1,070,814 -3,631 -0.34 80,739 -4.12 0.0440
2019-04-30 2019-03-31 13F GLAUKOS COM 377322102 1,074,445 -1,041,547 -49.22 84,204 -29.15 0.0467
2019-02-06 2018-12-31 13F GLAUKOS COM 377322102 2,115,992 -1,021,881 -32.57 118,855 -41.64 0.0758
2018-11-09 2018-09-30 13F GLAUKOS COM 377322102 3,137,873 -1,733,161 -35.58 203,648 2.87 0.1088
2018-08-10 2018-06-30 13F GLAUKOS COM 377322102 4,871,034 -210,405 -4.14 197,959 26.36 0.1128
2018-05-14 2018-03-31 13F GLAUKOS COM 377322102 5,081,439 -17,152 -0.34 156,661 19.79 0.0923
2018-03-12 2017-12-31 13F/A-1 GLAUKOS COM 377322102 5,098,591 1,754,230 52.45 130,779 18.50 0.0805
2018-02-09 2017-12-31 13F GLAUKOS COM 377322102 5,098,591 1,754,230 130,779
2017-11-14 2017-09-30 13F GLAUKOS COM 377322102 3,344,361 225,105 7.22 110,364 -14.68 0.0707
2017-08-17 2017-06-30 13F/A-1 GLAUKOS COM 377322102 3,119,256 3,119,256 129,356 0.0882
2017-08-14 2017-06-30 13F GLAUKOS COM 377322102 3,119,256 129,356 0.0883
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.