格勞科斯公司
US ˙ NYSE ˙ US3773221029

SecurityGKOS / Glaukos Corporation
InstitutionMorgan Stanley
Latest Disclosed Ownership678,825 shares
Latest Disclosed Value $ 73,082,425
Morgan Stanley reports 1.20% increase in ownership of GKOS / Glaukos Corporation

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 678,825 shares of Glaukos Corporation (US:GKOS) valued at $73,082,300 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 670,778 shares of Glaukos Corporation. This represents a change in shares of 1.20% during the quarter. The current value of the position is $82,606,214 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)
2026-05-15 2026-03-31 13F GLAUKOS COM 377322102 678,825 8,047 1.20 73,082 -3.51 0.0044
2026-05-27 2025-12-31 13F/A-1 GLAUKOS COM 377322102 670,778 241,200 56.15 75,738 116.19 0.0045
2026-02-13 2025-12-31 13F GLAUKOS COM 377322102 670,778 241,200 75,738 0.0045
2026-05-27 2025-09-30 13F/A-1 GLAUKOS COM 377322102 429,578 -66,740 -13.45 35,032 -31.66 0.0021
2025-11-14 2025-09-30 13F GLAUKOS COM 377322102 429,578 -66,740 35,032 0.0021
2025-08-15 2025-06-30 13F GLAUKOS COM 377322102 496,318 -41,138 -7.65 51,265 -3.09 0.0033
2025-05-15 2025-03-31 13F GLAUKOS COM 377322102 537,456 42,771 8.65 52,897 -28.69 0.0038
2025-05-15 2024-12-31 13F/A-1 GLAUKOS COM 377322102 494,685 -167,816 -25.33 74,173 -14.06 0.0052
2025-02-14 2024-12-31 13F GLAUKOS COM 377322102 494,685 -167,816 74,173 0.0052
2025-05-14 2024-09-30 13F/A-2 GLAUKOS COM 377322102 662,501 46,818 7.60 86,311 18.45 0.0063
2025-02-14 2024-09-30 13F/A-1 GLAUKOS COM 377322102 662,501 46,818 86,311 0.0063
2024-11-14 2024-09-30 13F GLAUKOS COM 377322102 662,501 46,818 86,311 0.0007
2025-05-14 2024-06-30 13F/A-2 GLAUKOS COM 377322102 615,683 64,659 11.73 72,866 40.25 0.0056
2024-10-17 2024-06-30 13F/A-1 GLAUKOS COM 377322102 615,683 64,659 72,866 0.0056
2024-08-14 2024-06-30 13F GLAUKOS COM 377322102 615,683 64,659 72,866 0.0056
2024-10-17 2024-03-31 13F/A-2 GLAUKOS COM 377322102 551,024 -111,232 -16.80 51,956 -1.30 0.0042
2024-08-16 2024-03-31 13F/A-1 GLAUKOS COM 377322102 551,024 -111,232 51,956 0.0005
2024-05-15 2024-03-31 13F GLAUKOS COM 377322102 551,024 -111,232 51,956 0.0042
2024-08-16 2023-12-31 13F/A-1 GLAUKOS COM 377322102 662,256 -68,014 -9.31 52,643 -4.20 0.0046
2024-02-13 2023-12-31 13F GLAUKOS COM 377322102 662,256 -68,014 52,643 0.0046
2023-11-15 2023-09-30 13F GLAUKOS COM 377322102 730,270 161,775 28.46 54,953 35.74 0.0056
2023-08-14 2023-06-30 13F GLAUKOS COM 377322102 568,495 -63,758 -10.08 40,483 27.80 0.0040
2023-05-15 2023-03-31 13F GLAUKOS COM 377322102 632,253 -176,953 -21.87 31,676 -10.39 0.0034
2023-02-14 2022-12-31 13F GLAUKOS COM 377322102 809,206 297,021 57.99 35,346 29.62 0.0040
2022-11-14 2022-09-30 13F GLAUKOS COM 377322102 512,185 5,475 1.08 27,268 18.48 0.0037
2022-10-27 2022-06-30 13F/A-1 GLAUKOS COM 377322102 506,710 -21,359 -4.04 23,014 -24.63 0.0030
2022-08-15 2022-06-30 13F GLAUKOS COM 377322102 506,710 -21,359 23,014 0.0030
2022-10-27 2022-03-31 13F/A-1 GLAUKOS COM 377322102 528,069 24,676 4.90 30,534 36.49 0.0041
2022-05-13 2022-03-31 13F GLAUKOS COM 377322102 528,069 24,676 30,534 0.0041
2022-02-14 2021-12-31 13F GLAUKOS COM 377322102 503,393 -25,256 -4.78 22,371 -12.15 0.0028
2021-11-15 2021-09-30 13F GLAUKOS COM 377322102 528,649 64,143 13.81 25,464 -35.38 0.0034
2021-08-23 2021-06-30 13F/A-1 GLAUKOS COM 377322102 464,506 -52,959 -10.23 39,404 -9.27 0.0052
2021-08-16 2021-06-30 13F GLAUKOS COM 377322102 464,506 -52,959 39,404 0.0011
2021-05-17 2021-03-31 13F GLAUKOS COM 377322102 517,465 -18,952 -3.53 43,431 7.58 0.0064
2021-02-16 2020-12-31 13F GLAUKOS COM 377322102 536,417 180,863 50.87 40,371 129.29 0.0062
2020-11-13 2020-09-30 13F GLAUKOS COM 377322102 355,554 146,411 70.01 17,607 119.13 0.0034
2020-08-14 2020-06-30 13F GLAUKOS COM 377322102 209,143 139,581 200.66 8,035 274.42 0.0018
2020-05-26 2020-03-31 13F/A-1 GLAUKOS COM 377322102 69,562 -452,527 -86.68 2,146 -92.45 0.0006
2020-05-15 2020-03-31 13F GLAUKOS COM 377322102 69,562 -452,527 2,146 164.8575
2020-02-14 2019-12-31 13F GLAUKOS COM 377322102 522,089 498,697 2,131.91 28,437 1,845.08 0.0066
2019-11-14 2019-09-30 13F GLAUKOS COM 377322102 23,392 -28,381 -54.82 1,462 -62.56 0.0004
2019-08-14 2019-06-30 13F GLAUKOS COM 377322102 51,773 31,994 161.76 3,905 151.94 0.0010
2019-05-15 2019-03-31 13F GLAUKOS COM 377322102 19,779 -234,252 -92.21 1,550 -89.14 0.0004
2019-02-14 2018-12-31 13F GLAUKOS COM 377322102 254,031 40,585 19.01 14,270 3.03 0.0043
2019-04-23 2018-09-30 13F/A-2 GLAUKOS COM 377322102 213,446 137,358 180.53 13,851 347.96 0.0035
2018-11-20 2018-09-30 13F/A-1 GLAUKOS COM 377322102 213,446 0 13,851 0.0035
2018-11-14 2018-09-30 13F GLAUKOS COM 377322102 213,446 137,358 13,851
2019-04-23 2018-06-30 13F/A-1 GLAUKOS COM 377322102 76,088 -30,750 -28.78 3,092 -6.10 0.0008
2018-08-14 2018-06-30 13F GLAUKOS COM 377322102 76,088 -30,750 3,092
2019-04-23 2018-03-31 13F/A-1 GLAUKOS COM 377322102 106,838 41,892 64.50 3,293 97.78 0.0009
2018-05-14 2018-03-31 13F GLAUKOS COM 377322102 106,838 41,892 3,293
2019-04-23 2017-12-31 13F/A-1 GLAUKOS COM 377322102 64,946 -4,175 -6.04 1,665 -27.01 0.0005
2018-02-14 2017-12-31 13F GLAUKOS COM 377322102 64,946 -4,175 1,665
2017-11-14 2017-09-30 13F GLAUKOS COM 377322102 69,121 31,704 84.73 2,281 47.07 0.0007
2017-08-11 2017-06-30 13F GLAUKOS COM 377322102 37,417 -62,369 -62.50 1,551 -69.70 0.0005
2017-05-22 2017-03-31 13F/A-1 GLAUKOS COM 377322102 99,786 -75,257 -42.99 5,119 -14.73 0.0016
2017-05-12 2017-03-31 13F GLAUKOS COM 377322102 99,786 5,119
2017-02-22 2016-12-31 13F/A-1 GLAUKOS COM 377322102 175,043 41,060 30.65 6,003 18.73 0.0020
2017-02-13 2016-12-31 13F GLAUKOS COM 377322102 175,043 6,003
2016-11-10 2016-09-30 13F GLAUKOS COM 377322102 133,983 47,515 54.95 5,056 100.56 0.0017
2016-08-12 2016-06-30 13F GLAUKOS COM 377322102 86,468 63,144 270.73 2,521 539.85 0.0009
2016-05-12 2016-03-31 13F GLAUKOS COM 377322102 23,324 13,237 131.23 394 58.23 0.0002
2016-02-09 2015-12-31 13F GLAUKOS COM 377322102 10,087 -10,305 -50.53 249 -49.60 0.0001
2016-02-08 2015-09-30 13F/A-1 GLAUKOS COM 377322102 20,392 -60,608 -74.82 494 -78.95 0.0002
2015-11-09 2015-09-30 13F GLAUKOS COM 377322102 20,392 494
2015-08-12 2015-06-30 13F GLAUKOS COM 377322102 81,000 81,000 2,347 0.0008
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.