Glaukos Corporation
DE ˙ DB ˙ US3773221029
102,00 € ↑5,50 (5,70%)
2026-06-05
DEL PRIS
SecurityDE:6GJ / Glaukos Corporation
InstitutionRiverbridge Partners Llc
Latest Disclosed Ownership433,228 shares
Latest Disclosed Value $ 46,641,274
Riverbridge Partners Llc reports 19.05% decrease in ownership of 6GJ / Glaukos Corporation

On April 17, 2026 - Riverbridge Partners Llc filed a 13F-HR form disclosing ownership of 433,228 shares of Glaukos Corporation (DE:6GJ) valued at $39,423,748 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 535,169 shares of Glaukos Corporation. This represents a change in shares of -19.05% during the quarter. The current value of the position is $44,189,256 USD.

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)
2026-04-17 2026-03-31 13F Glaukos COM 377322102 433,228 -101,941 -19.05 46,641 -22.81 1.1415
2026-01-13 2025-12-31 13F Glaukos COM 377322102 535,169 -34,475 -6.05 60,426 30.07 1.1328
2025-10-14 2025-09-30 13F Glaukos COM 377322102 569,644 165,673 41.01 46,454 11.33 0.7839
2025-07-15 2025-06-30 13F Glaukos COM 377322102 403,971 118,509 41.51 41,726 48.52 0.6713
2025-04-21 2025-03-31 13F Glaukos COM 377322102 285,462 -27,469 -8.78 28,095 -40.12 0.4507
2025-01-17 2024-12-31 13F Glaukos COM 377322102 312,931 -163,751 -34.35 46,921 -24.45 0.6403
2024-10-15 2024-09-30 13F Glaukos COM 377322102 476,682 -16,393 -3.32 62,102 6.42 0.8295
2024-07-17 2024-06-30 13F Glaukos COM 377322102 493,075 -41,439 -7.75 58,355 15.79 0.7930
2024-04-26 2024-03-31 13F Glaukos COM 377322102 534,514 -13,622 -2.49 50,399 15.67 0.6149
2024-02-15 2023-12-31 13F/A-1 Glaukos COM 377322102 548,136 -10,351 -1.85 43,571 3.68 0.5443
2024-01-24 2023-12-31 13F Glaukos COM 377322102 541,078 -10,210 43,010 0.5715
2024-02-15 2023-09-30 13F/A-1 Glaukos COM 377322102 558,487 -9,877 -1.74 42,026 3.84 0.5735
2023-10-16 2023-09-30 13F Glaukos COM 377322102 551,288 -17,076 41,484 0.6018
2023-07-25 2023-06-30 13F Glaukos COM 377322102 568,364 -11,547 -1.99 40,473 39.31 0.5102
2023-04-21 2023-03-31 13F Glaukos COM 377322102 579,911 -18,885 -3.15 29,054 111,642.31 0.4073
2023-01-11 2022-12-31 13F Glaukos COM 377322102 598,796 -12,864 -2.10 26 -99.92 0.3927
2022-10-26 2022-09-30 13F Glaukos COM 377322102 611,660 -2,168 -0.35 32,565 16.80 0.4835
2022-08-29 2022-06-30 13F/A-1 Glaukos COM 377322102 613,828 -19,623 -3.10 27,880 -23.88 0.4463
2022-07-11 2022-06-30 13F Glaukos COM 377322102 641,974 8,523 29,158 0.4171
2022-04-20 2022-03-31 13F Glaukos COM 377322102 633,451 78,896 14.23 36,626 48.62 0.4139
2022-01-14 2021-12-31 13F Glaukos COM 377322102 554,555 8,124 1.49 24,644 -6.37 0.2437
2021-10-26 2021-09-30 13F Glaukos COM 377322102 546,431 -1,227 -0.22 26,322 -43.34 0.2639
2021-07-26 2021-06-30 13F Glaukos COM 377322102 547,658 547,658 46,458 0.4717
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.