Position in GKOS
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$155,776,052
+$152,732,451 QoQ
Shares Held
1,446,926
+5267.7% QoQ
Ownership
2.46%
of shares outstanding
% of Portfolio
0.12%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in GKOS Over Time
Shares Held
Position Value (USD)
Derivatives in GKOS
reported options exposure · as of Mar 31, 2026CallValue
$1,884,050
CallShares
17,500
PutValue
$645,960
PutShares
6,000
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Medical Devices
Healthcare · as of Mar 31, 2026CITADEL ADVISORS LLC holds $1,870,037,695 across 83 Medical Devices names. GKOS ranks #4 (8.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BSX |
Boston Scientific Corp
|
4,217,314 | $264,636,453 | |
| 2 | ABT |
Abbott Laboratories
|
1,915,846 | $196,699,908 | |
| 3 | GMED |
Globus Medical Inc
|
1,966,114 | $169,400,381 | |
| 4 | GKOS |
GLAUKOS Corp
This page
|
1,446,926 | $155,776,052 | |
| 5 | DXCM |
Dexcom Inc
|
2,091,872 | $131,369,561 | |
| 6 | ZBH |
Zimmer Biomet Holdings, Inc.
|
1,378,665 | $124,658,889 | |
| 7 | GEHC |
GE HealthCare Technologies Inc.
|
1,293,268 | $92,054,816 | |
| 8 | MDT |
Medtronic plc
|
982,741 | $85,154,507 |
All Filings in GKOS
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $645,960 | 6,000 | Put | Defined | 2026-05-15 | |
| 2026-03-31 | $1,884,050 | 17,500 | Call | Defined | 2026-05-15 | |
| 2026-03-31 | $155,776,052 | 1,446,926 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $3,043,601 | 26,956 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $3,488,919 | 30,900 | Put | Defined | 2026-02-17 | |
| 2025-12-31 | $3,037,279 | 26,900 | Call | Defined | 2026-02-17 | |
| 2025-09-30 | $3,457,720 | 42,400 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $2,267,090 | 27,800 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $4,561,907 | 55,940 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $3,005,739 | 29,100 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $3,284,622 | 31,800 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $33,105,683 | 320,512 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $41,385,215 | 420,496 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $5,541,046 | 56,300 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $3,297,070 | 33,500 | Put | Defined | 2025-05-15 | |
| 2024-12-31 | $178,839,284 | 1,192,739 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $4,858,056 | 32,400 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $2,518,992 | 16,800 | Put | Defined | 2025-02-14 | |
| 2024-09-30 | $46,828,755 | 359,447 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $3,621,784 | 27,800 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $2,592,572 | 19,900 | Put | Defined | 2024-11-14 | |
| 2024-06-30 | $2,556,360 | 21,600 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $62,575,550 | 528,733 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $2,201,310 | 18,600 | Put | Defined | 2024-08-14 | |
| 2024-03-31 | $3,389,535 | 35,948 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $971,187 | 10,300 | Put | Defined | 2024-05-15 | |
| 2024-03-31 | $4,195,905 | 44,500 | Call | Defined | 2024-05-15 | |
| 2023-12-31 | $9,456,209 | 118,961 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $1,597,749 | 20,100 | Put | Defined | 2024-02-14 | |
| 2023-12-31 | $6,669,211 | 83,900 | Call | Defined | 2024-02-14 | |
| 2023-09-30 | $2,408,000 | 32,000 | Call | Defined | 2023-11-14 | |
| 2023-09-30 | $27,514,409 | 365,640 | Shares | Defined | 2023-11-14 | |
| 2023-09-30 | $880,425 | 11,700 | Put | Defined | 2023-11-14 | |
| 2023-06-30 | $491,349 | 6,900 | Put | Defined | 2023-08-14 | |
| 2023-06-30 | $30,937,967 | 434,461 | Shares | Defined | 2023-08-14 | |
| 2023-06-30 | $2,250,236 | 31,600 | Call | Defined | 2023-08-14 | |
| 2023-03-31 | $691,380 | 13,800 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $37,992,032 | 758,324 | Shares | Defined | 2023-05-15 | |
| 2023-03-31 | $310,620 | 6,200 | Put | Defined | 2023-05-15 | |
| 2022-12-31 | $30,627,673 | 701,183 | Shares | Defined | 2023-02-14 | |
| 2022-12-31 | $139,776 | 3,200 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $1,257,984 | 28,800 | Call | Defined | 2023-02-14 | |
| 2022-09-30 | $809,248 | 15,200 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $1,080,772 | 20,300 | Call | Defined | 2022-11-14 | |
| 2022-09-30 | $35,574,009 | 668,182 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $976,530 | 21,500 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $317,940 | 7,000 | Put | Defined | 2022-08-15 | |
| 2022-06-30 | $349,007 | 7,684 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $1,462,846 | 25,300 | Put | Defined | 2022-05-16 | |
| 2022-03-31 | $2,231,852 | 38,600 | Call | Defined | 2022-05-16 | |
| No filing history on record for this holder in this stock. | ||||||