Position in WAT
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$884,168
+$697,387 QoQ
Shares Held
2,969
+376.6% QoQ
Ownership
0.003%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
16 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in WAT Over Time
Shares Held
Position Value (USD)
Derivatives in WAT
reported options exposure · as of Mar 31, 2026CallValue
$119,120
CallShares
400
PutValue
$29,780
PutShares
100
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 Diagnostics & Research
Healthcare · as of Mar 31, 2026Walleye Capital LLC holds $89,507,750 across 18 Diagnostics & Research names. WAT ranks #7 (1.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | GH |
Guardant Health, Inc.
|
291,926 | $26,965,204 | |
| 2 | ICLR |
Icon PLC
|
196,571 | $21,752,546 | |
| 3 | TMO |
Thermo Fisher Scientific Inc.
|
43,039 | $21,154,959 | |
| 4 | DHR |
Danaher Corp /De/
|
35,439 | $6,719,234 | |
| 5 | NTRA |
Natera, Inc.
|
31,968 | $6,393,280 | |
| 6 | MEDP |
Medpace Holdings, Inc.
|
5,995 | $2,878,739 | |
| 7 | WAT |
Waters Corp /De/
This page
|
2,969 | $884,168 | |
| 8 | BLLN |
BillionToOne, Inc.
|
5,956 | $470,166 |
All Filings in WAT
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37 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $29,780 | 100 | Put | Sole | 2026-05-13 | |
| 2026-03-31 | $119,120 | 400 | Call | Sole | 2026-05-13 | |
| 2026-03-31 | $884,168 | 2,969 | Shares | Sole | 2026-05-13 | |
| 2025-09-30 | $179,886 | 600 | Put | Sole | 2025-11-14 | |
| 2025-09-30 | $186,781 | 623 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $209,424 | 600 | Put | Sole | 2025-08-13 | |
| 2025-06-30 | $385,340 | 1,104 | Shares | Sole | 2025-08-13 | |
| 2025-06-30 | $174,520 | 500 | Call | Sole | 2025-08-13 | |
| 2024-12-31 | $519,372 | 1,400 | Call | Sole | 2025-02-13 | |
| 2024-12-31 | $259,686 | 700 | Put | Sole | 2025-02-13 | |
| 2024-09-30 | $28,431 | 79 | Shares | Sole | 2024-11-14 | |
| 2024-09-30 | $1,187,637 | 3,300 | Put | Sole | 2024-11-14 | |
| 2024-09-30 | $323,901 | 900 | Call | Sole | 2024-11-14 | |
| 2024-06-30 | $582,270 | 2,007 | Shares | Sole | 2024-08-14 | |
| 2024-06-30 | $232,096 | 800 | Put | Sole | 2024-08-14 | |
| 2024-06-30 | $406,168 | 1,400 | Call | Sole | 2024-08-14 | |
| 2024-03-31 | $490,527 | 1,425 | Shares | Sole | 2024-05-15 | |
| 2024-03-31 | $5,335,565 | 15,500 | Put | Sole | 2024-05-15 | |
| 2024-03-31 | $1,686,727 | 4,900 | Call | Sole | 2024-05-15 | |
| 2023-12-31 | $1,679,073 | 5,100 | Call | Sole | 2024-02-14 | |
| 2023-12-31 | $5,366,449 | 16,300 | Put | Sole | 2024-02-14 | |
| 2023-09-30 | $1,672,681 | 6,100 | Call | Sole | 2023-11-21 | |
| 2023-09-30 | $7,787,564 | 28,400 | Put | Sole | 2023-11-21 | |
| 2023-06-30 | $1,679,202 | 6,300 | Call | Sole | 2023-08-14 | |
| 2023-06-30 | $2,825,324 | 10,600 | Put | Sole | 2023-08-14 | |
| 2023-03-31 | $402,519 | 1,300 | Put | Sole | 2023-05-15 | |
| 2023-03-31 | $154,815 | 500 | Call | Sole | 2023-05-15 | |
| 2022-12-31 | $1,199,030 | 3,500 | Put | Sole | 2023-02-14 | |
| 2022-12-31 | $828,015 | 2,417 | Shares | Sole | 2023-02-14 | |
| 2022-12-31 | $308,322 | 900 | Call | Sole | 2023-02-14 | |
| 2022-09-30 | $2,937,877 | 10,900 | Put | Sole | 2022-11-14 | |
| 2022-09-30 | $188,671 | 700 | Call | Sole | 2022-11-14 | |
| 2022-06-30 | $1,302,737 | 3,936 | Shares | Sole | 2022-08-19 | |
| 2021-06-30 | $221,190 | 640 | Shares | Sole | 2021-08-16 | |
| 2020-03-31 | $145,640 | 800 | Put | Sole | 2020-05-15 | |
| 2020-03-31 | $382,305 | 2,100 | Call | Sole | 2020-05-15 | |
| 2020-03-31 | $116,329 | 639 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||