Position in A
as of Mar 31, 2026
· filed May 11, 2026
Position Value
$1,264,950
-$5,380,164 QoQ
Shares Held
11,098
-77.3% QoQ
Ownership
0.004%
of shares outstanding
% of Portfolio
0.03%
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 A Over Time
Shares Held
Position Value (USD)
Derivatives in A
reported options exposure · as of Mar 31, 2026CallValue
$410,328
CallShares
3,600
PutValue
$1,094,208
PutShares
9,600
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 Trading LLC holds $9,391,151 across 9 Diagnostics & Research names. A ranks #2 (13.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | CRL |
Charles River Laboratories International, Inc.
|
31,661 | $5,461,522 | |
| 2 | A |
Agilent Technologies, Inc.
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|
11,098 | $1,264,950 | |
| 3 | QGEN |
Qiagen N.V.
|
29,434 | $1,178,537 | |
| 4 | IQV |
Iqvia Holdings Inc.
|
3,564 | $607,804 | |
| 5 | RDNT |
RadNet, Inc.
|
8,609 | $481,157 | |
| 6 | WAT |
Waters Corp /De/
|
693 | $206,375 | |
| 7 | DGX |
Quest Diagnostics Inc
|
549 | $107,593 | |
| 8 | NTRA |
Natera, Inc.
|
260 | $51,997 |
All Filings in A
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50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1,264,950 | 11,098 | Shares | Sole | 2026-05-11 | |
| 2026-03-31 | $1,094,208 | 9,600 | Put | Sole | 2026-05-11 | |
| 2026-03-31 | $410,328 | 3,600 | Call | Sole | 2026-05-11 | |
| 2025-12-31 | $3,728,318 | 27,400 | Put | Sole | 2026-02-13 | |
| 2025-12-31 | $6,645,114 | 48,836 | Shares | Sole | 2026-02-13 | |
| 2025-12-31 | $12,627,296 | 92,800 | Call | Sole | 2026-02-13 | |
| 2025-09-30 | $2,780,317 | 21,662 | Shares | Sole | 2025-11-14 | |
| 2025-09-30 | $2,066,435 | 16,100 | Call | Sole | 2025-11-14 | |
| 2025-09-30 | $3,619,470 | 28,200 | Put | Sole | 2025-11-14 | |
| 2025-06-30 | $1,209,012 | 10,245 | Shares | Sole | 2025-08-13 | |
| 2025-06-30 | $2,348,399 | 19,900 | Put | Sole | 2025-08-13 | |
| 2025-06-30 | $1,286,309 | 10,900 | Call | Sole | 2025-08-13 | |
| 2025-03-31 | $3,018,084 | 25,800 | Put | Sole | 2025-05-14 | |
| 2025-03-31 | $1,579,230 | 13,500 | Call | Sole | 2025-05-14 | |
| 2025-03-31 | $2,126,345 | 18,177 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $732,556 | 5,453 | Shares | Sole | 2025-02-13 | |
| 2024-12-31 | $3,479,406 | 25,900 | Put | Sole | 2025-02-13 | |
| 2024-12-31 | $5,548,242 | 41,300 | Call | Sole | 2025-02-13 | |
| 2024-09-30 | $2,345,984 | 15,800 | Put | Sole | 2024-11-14 | |
| 2024-09-30 | $4,439,552 | 29,900 | Call | Sole | 2024-11-14 | |
| 2024-06-30 | $5,308,089 | 40,948 | Shares | Sole | 2024-08-14 | |
| 2024-06-30 | $6,092,610 | 47,000 | Call | Sole | 2024-08-14 | |
| 2024-06-30 | $12,211,146 | 94,200 | Put | Sole | 2024-08-14 | |
| 2024-03-31 | $4,830,932 | 33,200 | Put | Sole | 2024-05-15 | |
| 2024-03-31 | $2,837,445 | 19,500 | Call | Sole | 2024-05-15 | |
| 2023-12-31 | $9,078,659 | 65,300 | Put | Sole | 2024-02-14 | |
| 2023-12-31 | $9,815,518 | 70,600 | Call | Sole | 2024-02-14 | |
| 2023-09-30 | $4,618,166 | 41,300 | Call | Sole | 2023-11-21 | |
| 2023-09-30 | $303,367 | 2,713 | Shares | Sole | 2023-11-21 | |
| 2023-09-30 | $3,309,872 | 29,600 | Put | Sole | 2023-11-21 | |
| 2023-06-30 | $266,474 | 2,216 | Shares | Sole | 2023-08-14 | |
| 2023-06-30 | $5,904,275 | 49,100 | Call | Sole | 2023-08-14 | |
| 2023-06-30 | $3,691,675 | 30,700 | Put | Sole | 2023-08-14 | |
| 2023-03-31 | $5,824,114 | 42,100 | Call | Sole | 2023-05-15 | |
| 2023-03-31 | $2,268,776 | 16,400 | Put | Sole | 2023-05-15 | |
| 2022-12-31 | $669,683 | 4,475 | Shares | Sole | 2023-02-14 | |
| 2022-12-31 | $4,713,975 | 31,500 | Put | Sole | 2023-02-14 | |
| 2022-12-31 | $4,968,380 | 33,200 | Call | Sole | 2023-02-14 | |
| 2022-09-30 | $2,406,690 | 19,800 | Call | Sole | 2022-11-14 | |
| 2022-09-30 | $4,752,605 | 39,100 | Put | Sole | 2022-11-14 | |
| 2022-06-30 | $2,007,213 | 16,900 | Put | Sole | 2022-08-08 | |
| 2022-06-30 | $3,004,881 | 25,300 | Call | Sole | 2022-08-08 | |
| 2022-03-31 | $5,544,627 | 41,900 | Call | Sole | 2022-05-16 | |
| 2022-03-31 | $2,249,610 | 17,000 | Put | Sole | 2022-05-16 | |
| 2021-12-31 | $8,573,205 | 53,700 | Put | Sole | 2022-02-14 | |
| 2021-12-31 | $2,780,464 | 17,416 | Shares | Sole | 2022-02-14 | |
| 2021-12-31 | $6,801,090 | 42,600 | Call | Sole | 2022-02-14 | |
| 2021-09-30 | $4,914,936 | 31,200 | Call | Sole | 2021-11-15 | |
| 2021-09-30 | $2,142,408 | 13,600 | Put | Sole | 2021-11-15 | |
| 2021-09-30 | $2,189,982 | 13,902 | Shares | Sole | 2021-11-15 | |
| No filing history on record for this holder in this stock. | ||||||