Position in PEN
as of Jun 30, 2026
· filed Aug 3, 2026
Position Value
$0
-$197,022 QoQ
Shares Held
0
-100.0% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2021
20 quarters on record
Common Shares in PEN Over Time
Shares Held
Position Value (USD)
Derivatives in PEN
reported options exposure · as of Jun 30, 2026CallValue
$11,619,600
CallShares
36,800
PutValue
$12,251,100
PutShares
38,800
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.
| # | 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 PEN
Export CSV
47 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $12,251,100 | 38,800 | Put | Sole | 2026-08-03 | |
| 2026-06-30 | $11,619,600 | 36,800 | Call | Sole | 2026-08-03 | |
| 2026-03-31 | $11,722,809 | 35,700 | Call | Sole | 2026-05-11 | |
| 2026-03-31 | $197,022 | 600 | Shares | Sole | 2026-05-11 | |
| 2026-03-31 | $12,970,615 | 39,500 | Put | Sole | 2026-05-11 | |
| 2025-12-31 | $2,642,735 | 8,500 | Put | Sole | 2026-02-13 | |
| 2025-12-31 | $621,820 | 2,000 | Call | Sole | 2026-02-13 | |
| 2025-12-31 | $65,291 | 210 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $151,992 | 600 | Put | Sole | 2025-11-14 | |
| 2025-09-30 | $354,648 | 1,400 | Call | Sole | 2025-11-14 | |
| 2025-09-30 | $63,836 | 252 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $410,608 | 1,600 | Call | Sole | 2025-08-13 | |
| 2025-06-30 | $256,630 | 1,000 | Put | Sole | 2025-08-13 | |
| 2025-06-30 | $42,600 | 166 | Shares | Sole | 2025-08-13 | |
| 2025-03-31 | $427,856 | 1,600 | Put | Sole | 2025-05-14 | |
| 2025-03-31 | $748,748 | 2,800 | Call | Sole | 2025-05-14 | |
| 2024-12-31 | $546,204 | 2,300 | Call | Sole | 2025-02-13 | |
| 2024-12-31 | $379,968 | 1,600 | Put | Sole | 2025-02-13 | |
| 2024-09-30 | $310,896 | 1,600 | Put | Sole | 2024-11-14 | |
| 2024-09-30 | $893,826 | 4,600 | Call | Sole | 2024-11-14 | |
| 2024-06-30 | $233,961 | 1,300 | Put | Sole | 2024-08-14 | |
| 2024-06-30 | $53,991 | 300 | Call | Sole | 2024-08-14 | |
| 2024-06-30 | $238,640 | 1,326 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $391,234 | 1,753 | Shares | Sole | 2024-05-15 | |
| 2024-03-31 | $513,314 | 2,300 | Put | Sole | 2024-05-15 | |
| 2024-03-31 | $44,636 | 200 | Call | Sole | 2024-05-15 | |
| 2023-12-31 | $329,265 | 1,309 | Shares | Sole | 2024-02-14 | |
| 2023-12-31 | $779,774 | 3,100 | Put | Sole | 2024-02-14 | |
| 2023-12-31 | $50,308 | 200 | Call | Sole | 2024-02-14 | |
| 2023-09-30 | $362,865 | 1,500 | Call | Sole | 2023-11-21 | |
| 2023-09-30 | $1,403,078 | 5,800 | Put | Sole | 2023-11-21 | |
| 2023-09-30 | $1,252,851 | 5,179 | Shares | Sole | 2023-11-21 | |
| 2023-06-30 | $3,234,164 | 9,400 | Call | Sole | 2023-08-14 | |
| 2023-06-30 | $1,341,834 | 3,900 | Put | Sole | 2023-08-14 | |
| 2023-03-31 | $3,177,066 | 11,400 | Call | Sole | 2023-05-15 | |
| 2023-03-31 | $1,170,498 | 4,200 | Put | Sole | 2023-05-15 | |
| 2022-12-31 | $2,424,814 | 10,900 | Call | Sole | 2023-02-14 | |
| 2022-12-31 | $1,384,368 | 6,223 | Shares | Sole | 2023-02-14 | |
| 2022-12-31 | $1,423,744 | 6,400 | Put | Sole | 2023-02-14 | |
| 2022-09-30 | $1,649,520 | 8,700 | Call | Sole | 2022-11-14 | |
| 2022-09-30 | $335,592 | 1,770 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $610,148 | 4,900 | Put | Sole | 2022-08-08 | |
| 2022-03-31 | $355,408 | 1,600 | Call | Sole | 2022-05-16 | |
| 2021-12-31 | $287,320 | 1,000 | Call | Sole | 2022-02-14 | |
| 2021-09-30 | $826,150 | 3,100 | Put | Sole | 2021-11-15 | |
| 2021-09-30 | $114,328 | 429 | Shares | Sole | 2021-11-15 | |
| 2021-09-30 | $26,650 | 100 | Call | Sole | 2021-11-15 | |
| No filing history on record for this holder in this stock. | ||||||