Position in IDXX
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$4,687,286
+$4,687,286 QoQ
Shares Held
8,342
Ownership
0.011%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
22 quarters on record
Voting authority
Sole 50%
Shared 50%
None 0%
Common Shares in IDXX Over Time
Shares Held
Position Value (USD)
Derivatives in IDXX
reported options exposure · as of Mar 31, 2026CallValue
$224,756
CallShares
400
PutValue
$0
PutShares
0
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, 2026TUDOR INVESTMENT CORP ET AL holds $188,228,065 across 21 Diagnostics & Research names. IDXX ranks #8 (2.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | DHR |
Danaher Corp /De/
|
447,231 | $84,794,997 | |
| 2 | NTRA |
Natera, Inc.
|
150,693 | $30,137,093 | |
| 3 | A |
Agilent Technologies, Inc.
|
159,699 | $18,202,492 | |
| 4 | SHC |
Sotera Health Co
|
845,120 | $12,119,020 | |
| 5 | ICLR |
Icon PLC
|
65,375 | $7,234,397 | |
| 6 | TMO |
Thermo Fisher Scientific Inc.
|
13,534 | $6,652,367 | |
| 7 | CSTL |
Castle Biosciences Inc
|
222,982 | $5,474,208 | |
| 8 | IDXX |
Idexx Laboratories Inc /De
This page
|
8,342 | $4,687,286 |
All Filings in IDXX
Export CSV
43 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $4,687,286 | 8,342 | Shares | Defined | 2026-05-15 | |
| 2026-03-31 | $224,756 | 400 | Call | Defined | 2026-05-15 | |
| 2025-12-31 | $541,224 | 800 | Call | Defined | 2026-02-17 | |
| 2025-09-30 | $4,225,618 | 6,614 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $511,112 | 800 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $1,980,559 | 3,100 | Call | Defined | 2025-11-14 | |
| 2025-06-30 | $9,614,967 | 17,927 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $2,252,628 | 4,200 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $1,072,680 | 2,000 | Put | Defined | 2025-08-14 | |
| 2025-03-31 | $1,637,805 | 3,900 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $15,979,937 | 38,052 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $1,133,865 | 2,700 | Put | Defined | 2025-05-15 | |
| 2024-12-31 | $2,439,296 | 5,900 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $812,823 | 1,966 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $2,149,888 | 5,200 | Call | Defined | 2025-02-14 | |
| 2024-09-30 | $404,176 | 800 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $606,264 | 1,200 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $623,616 | 1,280 | Shares | Defined | 2024-08-14 | |
| 2023-09-30 | $1,050,322 | 2,402 | Shares | Defined | 2023-11-15 | |
| 2023-06-30 | $703,122 | 1,400 | Call | Defined | 2023-08-14 | |
| 2023-06-30 | $6,726,366 | 13,393 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $1,850,296 | 3,700 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $1,000,160 | 2,000 | Put | Defined | 2023-05-15 | |
| 2022-12-31 | $1,264,676 | 3,100 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $2,447,760 | 6,000 | Call | Defined | 2023-02-14 | |
| 2022-12-31 | $4,888,176 | 11,982 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $847,080 | 2,600 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $1,378,785 | 4,232 | Shares | Defined | 2022-11-14 | |
| 2022-09-30 | $1,270,620 | 3,900 | Call | Defined | 2022-11-14 | |
| 2022-06-30 | $385,803 | 1,100 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $210,438 | 600 | Put | Defined | 2022-08-15 | |
| 2022-06-30 | $4,075,131 | 11,619 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $1,312,944 | 2,400 | Call | Defined | 2022-05-16 | |
| 2022-03-31 | $273,530 | 500 | Put | Defined | 2022-05-16 | |
| 2021-12-31 | $526,768 | 800 | Call | Defined | 2022-02-14 | |
| 2021-12-31 | $263,384 | 400 | Put | Defined | 2022-02-14 | |
| 2021-09-30 | $497,520 | 800 | Put | Defined | 2021-11-17 | |
| 2021-09-30 | $3,676,050 | 5,911 | Shares | Defined | 2021-11-17 | |
| 2021-03-31 | $3,204,491 | 6,549 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $5,350,608 | 10,704 | Shares | Defined | 2021-02-16 | |
| 2020-09-30 | $2,581,160 | 6,566 | Shares | Defined | 2020-11-16 | |
| 2020-06-30 | $1,143,344 | 3,463 | Shares | Defined | 2020-08-14 | |
| 2020-03-31 | $1,160,571 | 4,791 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||