Position in MKSI
as of Jun 30, 2026
· filed Aug 3, 2026
Position Value
$12,283,596
-$5,914,598 QoQ
Shares Held
27,616
-65.1% QoQ
Ownership
0.041%
of shares outstanding
% of Portfolio
0.10%
of 13F equity value
Holder Rank
#182
of 775 holders
Holding Since
Sep 2022
16 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MKSI Over Time
Shares Held
Position Value (USD)
Derivatives in MKSI
reported options exposure · as of Jun 30, 2026CallValue
$533,760
CallShares
1,200
PutValue
$355,840
PutShares
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 Scientific & Technical Instruments
Technology · as of Jun 30, 2026Walleye Capital LLC holds $106,607,393 across 9 Scientific & Technical Instruments names. MKSI ranks #2 (11.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | NOVT |
Novanta Inc
|
1,240,000 | $83,576,000 | |
| 2 | MKSI |
Mks Inc
This page
|
27,616 | $12,283,596 | |
| 3 | COHR |
Coherent Corp.
|
10,442 | $4,119,055 | |
| 4 | KEYS |
Keysight Technologies, Inc.
|
9,332 | $3,266,853 | |
| 5 | ST |
Sensata Technologies Holding plc
|
34,303 | $1,637,625 | |
| 6 | ITRI |
Itron, Inc.
|
13,431 | $1,162,184 | |
| 7 | CGNX |
Cognex Corp
|
7,233 | $523,813 | |
| 8 | FTV |
Fortive Corp
|
515 | $31,461 |
All Filings in MKSI
Export CSV
41 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $355,840 | 800 | Put | Sole | 2026-08-03 | |
| 2026-06-30 | $533,760 | 1,200 | Call | Sole | 2026-08-03 | |
| 2026-06-30 | $12,283,596 | 27,616 | Shares | Sole | 2026-08-03 | |
| 2026-03-31 | $18,198,194 | 79,188 | Shares | Sole | 2026-05-13 | |
| 2026-03-31 | $413,658 | 1,800 | Call | Sole | 2026-05-13 | |
| 2026-03-31 | $367,696 | 1,600 | Put | Sole | 2026-05-13 | |
| 2025-12-31 | $15,980 | 100 | Call | Sole | 2026-02-13 | |
| 2025-12-31 | $1,830,189 | 11,453 | Shares | Sole | 2026-02-13 | |
| 2025-12-31 | $31,960 | 200 | Put | Sole | 2026-02-13 | |
| 2025-09-30 | $86,639 | 700 | Put | Sole | 2025-11-14 | |
| 2025-09-30 | $24,754 | 200 | Call | Sole | 2025-11-14 | |
| 2025-09-30 | $6,224,145 | 50,288 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $79,488 | 800 | Call | Sole | 2025-08-13 | |
| 2025-06-30 | $79,488 | 800 | Put | Sole | 2025-08-13 | |
| 2025-06-30 | $3,777,865 | 38,022 | Shares | Sole | 2025-08-13 | |
| 2025-03-31 | $376,705 | 4,700 | Call | Sole | 2025-05-14 | |
| 2025-03-31 | $5,098,662 | 63,614 | Shares | Sole | 2025-05-14 | |
| 2025-03-31 | $144,270 | 1,800 | Put | Sole | 2025-05-14 | |
| 2024-12-31 | $11,759,533 | 112,650 | Shares | Sole | 2025-02-13 | |
| 2024-09-30 | $228,291 | 2,100 | Call | Sole | 2024-11-14 | |
| 2024-09-30 | $913,164 | 8,400 | Put | Sole | 2024-11-14 | |
| 2024-09-30 | $13,451,992 | 123,742 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $1,999,702 | 15,314 | Shares | Sole | 2024-08-14 | |
| 2024-06-30 | $365,624 | 2,800 | Call | Sole | 2024-08-14 | |
| 2024-06-30 | $2,507,136 | 19,200 | Put | Sole | 2024-08-14 | |
| 2024-03-31 | $837,900 | 6,300 | Call | Sole | 2024-05-15 | |
| 2024-03-31 | $1,343,300 | 10,100 | Put | Sole | 2024-05-15 | |
| 2023-12-31 | $1,687,068 | 16,400 | Put | Sole | 2024-02-14 | |
| 2023-12-31 | $997,839 | 9,700 | Call | Sole | 2024-02-14 | |
| 2023-09-30 | $1,021,172 | 11,800 | Put | Sole | 2023-11-21 | |
| 2023-09-30 | $12,270,333 | 141,788 | Shares | Sole | 2023-11-21 | |
| 2023-09-30 | $372,122 | 4,300 | Call | Sole | 2023-11-21 | |
| 2023-06-30 | $313,490 | 2,900 | Call | Sole | 2023-08-14 | |
| 2023-06-30 | $940,470 | 8,700 | Put | Sole | 2023-08-14 | |
| 2023-06-30 | $8,435,367 | 78,033 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $522,858 | 5,900 | Put | Sole | 2023-05-15 | |
| 2023-03-31 | $522,858 | 5,900 | Call | Sole | 2023-05-15 | |
| 2023-03-31 | $546,874 | 6,171 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $1,165,545 | 13,756 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $1,010,521 | 12,228 | Shares | Sole | 2022-11-14 | |
| 2022-09-30 | $123,960 | 1,500 | Put | Sole | 2022-11-14 | |
| No filing history on record for this holder in this stock. | ||||||