Blair William & Co/il reports 7.79% increase in ownership of 6GJ / Glaukos Corporation

Glaukos Corporation

DE ˙ DB ˙ US3773221029

102,00 € ↑5,50 (5,70%)

2026-06-05
DEL PRIS

Security	DE:6GJ / Glaukos Corporation
Institution	Blair William & Co/il
Latest Disclosed Ownership	15,585 shares
Latest Disclosed Value	$ 1,677,881

On May 8, 2026 - Blair William & Co/il filed a 13F-HR form disclosing ownership of 15,585 shares of Glaukos Corporation (DE:6GJ) valued at $1,418,235 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 14,458 shares of Glaukos Corporation. This represents a change in shares of 7.79% during the quarter. The current value of the position is $1,589,670 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-08	2026-03-31	13F	GLAUKOS	COM	377322102	15,585	1,127	7.79	1,678	2.76	0.0048
2026-02-17	2025-12-31	13F	GLAUKOS	COM	377322102	14,458	-5,051	-25.89	1,632	2.64	0.0044
2025-11-12	2025-09-30	13F	GLAUKOS	COM	377322102	19,509	-27,741	-58.71	1,591	-67.42	0.0042
2025-07-24	2025-06-30	13F	GLAUKOS	COM	377322102	47,250	518	1.11	4,880	6.11	0.0136
2025-05-09	2025-03-31	13F	GLAUKOS	COM	377322102	46,732	-672	-1.42	4,599	-35.29	0.0139
2025-02-12	2024-12-31	13F	GLAUKOS	COM	377322102	47,404	-669	-1.39	7,108	13.49	0.0207
2024-11-12	2024-09-30	13F	GLAUKOS	COM	377322102	48,073	-1,021	-2.08	6,263	7.78	0.0184
2024-08-12	2024-06-30	13F	GLAUKOS	COM	377322102	49,094	-896	-1.79	5,810	23.28	0.0179
2024-05-09	2024-03-31	13F	GLAUKOS	COM	377322102	49,990	2,863	6.08	4,714	25.81	0.0148
2024-02-12	2023-12-31	13F	GLAUKOS	COM	377322102	47,127	-9,485	-16.75	3,746	-12.07	0.0128
2023-11-09	2023-09-30	13F	GLAUKOS	COM	377322102	56,612	42,946	314.25	4,260	337.82	0.0163
2023-08-11	2023-06-30	13F	GLAUKOS	COM	377322102	13,666	100	0.74	973	43.30	0.0036
2023-05-12	2023-03-31	13F	GLAUKOS	COM	377322102	13,566	44	0.33	680	15.08	0.0027
2023-02-10	2022-12-31	13F	GLAUKOS	COM	377322102	13,522	0	0.00	591	-18.06	0.0026
2022-11-09	2022-09-30	13F	GLAUKOS	COM	377322102	13,522	-10,115	-42.79	720	-32.96	0.0033
2022-08-10	2022-06-30	13F	GLAUKOS	COM	377322102	23,637	-30	-0.13	1,074	-21.49	0.0048
2022-05-13	2022-03-31	13F	GLAUKOS	COM	377322102	23,667	-280	-1.17	1,368	28.57	0.0048
2022-02-14	2021-12-31	13F	GLAUKOS	COM	377322102	23,947	-14,320	-37.42	1,064	-42.27	0.0033
2021-11-12	2021-09-30	13F	GLAUKOS	COM	377322102	38,267	10,402	37.33	1,843	-22.04	0.0063
2021-08-12	2021-06-30	13F	GLAUKOS	COM	377322102	27,865	-907	-3.15	2,364	-2.11	0.0082
2021-05-13	2021-03-31	13F	GLAUKOS	COM	377322102	28,772	-4,091	-12.45	2,415	-2.35	0.0091
2021-02-09	2020-12-31	13F	GLAUKOS	COM	377322102	32,863	-9,061	-21.61	2,473	19.12	0.0091
2020-11-06	2020-09-30	13F	GLAUKOS	COM	377322102	41,924	-5,379	-11.37	2,076	14.25	0.0088
2020-08-12	2020-06-30	13F	GLAUKOS	COM	377322102	47,303	-9,148	-16.21	1,817	4.31	0.0087
2020-05-11	2020-03-31	13F	GLAUKOS	COM	377322102	56,451	-28,683	-33.69	1,742	-62.43	0.0109
2020-02-13	2019-12-31	13F	GLAUKOS	COM	377322102	85,134	12,944	17.93	4,637	2.75	0.0238
2019-11-12	2019-09-30	13F	GLAUKOS	COM	377322102	72,190	45,975	175.38	4,513	128.28	0.0260
2019-08-13	2019-06-30	13F	GLAUKOS	COM	377322102	26,215	-6,638	-20.21	1,977	-23.22	0.0113
2019-05-14	2019-03-31	13F	GLAUKOS	COM	377322102	32,853	2,838	9.46	2,575	52.73	0.0157
2019-02-14	2018-12-31	13F	GLAUKOS	COM	377322102	30,015	3,285	12.29	1,686	-2.82	0.0123
2018-11-13	2018-09-30	13F	GLAUKOS	COM	377322102	26,730	-980	-3.54	1,735	54.09	0.0106
2018-08-13	2018-06-30	13F	GLAUKOS	COM	377322102	27,710	-57,653	-67.54	1,126	-57.22	0.0077
2018-05-15	2018-03-31	13F	GLAUKOS	COM	377322102	85,363	-5,178	-5.72	2,632	13.35	0.0186
2018-02-14	2017-12-31	13F	GLAUKOS	COM	377322102	90,541	-26,643	-22.74	2,322	-39.95	0.0158
2017-11-13	2017-09-30	13F	GLAUKOS	COM	377322102	117,184	45,074	62.51	3,867	29.33	0.0290
2017-08-04	2017-06-30	13F	GLAUKOS	COM	377322102	72,110	24,328	50.91	2,990	25.47	0.0225
2017-05-10	2017-03-31	13F	GLAUKOS	COM	377322102	47,782	-899	-1.85	2,383	42.69	0.0192
2017-02-14	2016-12-31	13F	GLAUKOS	COM	377322102	48,681	3,860	8.61	1,670	-1.30	0.0149
2016-11-14	2016-09-30	13F	GLAUKOS	COM	377322102	44,821	14,563	48.13	1,692	91.84	0.0150
2016-08-08	2016-06-30	13F	GLAUKOS	COM	377322102	30,258	30,258		882		0.0082

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.