Position in GKOS
as of Jun 30, 2026
· filed Aug 3, 2026
Position Value
$64,708
+$64,708 QoQ
Shares Held
463
Ownership
0.001%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#286
of 364 holders
Holding Since
Jun 2020
17 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in GKOS Over Time
Shares Held
Position Value (USD)
Derivatives in GKOS
reported options exposure · as of Jun 30, 2026CallValue
$824,584
CallShares
5,900
PutValue
$2,152,304
PutShares
15,400
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 Jun 30, 2026Walleye Trading LLC holds $21,407,800 across 13 Medical Devices names. GKOS ranks #10 (0.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BSX |
Boston Scientific Corp
|
234,744 | $10,018,873 | |
| 2 | DXCM |
Dexcom Inc
|
51,904 | $3,495,734 | |
| 3 | GEHC |
GE HealthCare Technologies Inc.
|
45,003 | $2,880,642 | |
| 4 | BRKR |
Bruker Corp
|
44,895 | $2,701,781 | |
| 5 | PODD |
Insulet Corp
|
5,663 | $862,191 | |
| 6 | BFLY |
Butterfly Network, Inc.
|
85,194 | $717,333 | |
| 7 | TNDM |
Tandem Diabetes Care Inc
|
20,849 | $314,611 | |
| 8 | SYK |
Stryker Corp
|
723 | $227,629 |
All Filings in GKOS
Export CSV
35 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $64,708 | 463 | Shares | Sole | 2026-08-03 | |
| 2026-06-30 | $2,152,304 | 15,400 | Put | Sole | 2026-08-03 | |
| 2026-06-30 | $824,584 | 5,900 | Call | Sole | 2026-08-03 | |
| 2026-03-31 | $710,556 | 6,600 | Call | Sole | 2026-05-11 | |
| 2026-03-31 | $322,980 | 3,000 | Put | Sole | 2026-05-11 | |
| 2025-12-31 | $541,968 | 4,800 | Put | Sole | 2026-02-13 | |
| 2025-12-31 | $2,235,618 | 19,800 | Call | Sole | 2026-02-13 | |
| 2025-09-30 | $239,512 | 2,937 | Shares | Sole | 2025-11-14 | |
| 2025-09-30 | $2,055,060 | 25,200 | Call | Sole | 2025-11-14 | |
| 2025-03-31 | $326,754 | 3,320 | Shares | Sole | 2025-05-14 | |
| 2025-03-31 | $118,104 | 1,200 | Call | Sole | 2025-05-14 | |
| 2024-12-31 | $5,352,858 | 35,700 | Call | Sole | 2025-02-13 | |
| 2024-12-31 | $449,820 | 3,000 | Put | Sole | 2025-02-13 | |
| 2024-03-31 | $264,012 | 2,800 | Put | Sole | 2024-05-15 | |
| 2024-03-31 | $301,728 | 3,200 | Call | Sole | 2024-05-15 | |
| 2023-09-30 | $203,175 | 2,700 | Call | Sole | 2023-11-21 | |
| 2023-09-30 | $285,950 | 3,800 | Put | Sole | 2023-11-21 | |
| 2022-12-31 | $210,756 | 4,825 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $74,536 | 1,400 | Put | Sole | 2022-11-14 | |
| 2022-09-30 | $878,885 | 16,508 | Shares | Sole | 2022-11-14 | |
| 2022-09-30 | $42,592 | 800 | Call | Sole | 2022-11-14 | |
| 2022-03-31 | $289,100 | 5,000 | Call | Sole | 2022-05-16 | |
| 2022-03-31 | $86,151 | 1,490 | Shares | Sole | 2022-05-16 | |
| 2021-09-30 | $191,909 | 3,984 | Shares | Sole | 2021-11-15 | |
| 2021-09-30 | $125,242 | 2,600 | Put | Sole | 2021-11-15 | |
| 2021-09-30 | $303,471 | 6,300 | Call | Sole | 2021-11-15 | |
| 2021-06-30 | $135,728 | 1,600 | Put | Sole | 2021-08-16 | |
| 2021-06-30 | $619,259 | 7,300 | Call | Sole | 2021-08-16 | |
| 2021-03-31 | $1,443,596 | 17,200 | Call | Sole | 2021-05-17 | |
| 2021-03-31 | $193,039 | 2,300 | Put | Sole | 2021-05-17 | |
| 2020-12-31 | $129,823 | 1,725 | Shares | Sole | 2021-02-16 | |
| 2020-12-31 | $255,884 | 3,400 | Put | Sole | 2021-02-16 | |
| 2020-12-31 | $75,260 | 1,000 | Call | Sole | 2021-02-16 | |
| 2020-09-30 | $594,240 | 12,000 | Call | Sole | 2020-11-16 | |
| 2020-06-30 | $537,880 | 14,000 | Call | Sole | 2020-08-14 | |
| No filing history on record for this holder in this stock. | ||||||