IDEXX Laboratories, Inc.
US ˙ NasdaqGS ˙ US45168D1046

SecurityIDXX / IDEXX Laboratories, Inc.
InstitutionTd Asset Management Inc
Latest Disclosed Ownership236,531 shares
Latest Disclosed Value $ 132,904,404
Td Asset Management Inc reports 11.69% decrease in ownership of IDXX / IDEXX Laboratories, Inc.

On May 11, 2026 - Td Asset Management Inc filed a 13F-HR form disclosing ownership of 236,531 shares of IDEXX Laboratories, Inc. (US:IDXX) valued at $132,904,404 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 267,850 shares of IDEXX Laboratories, Inc.. This represents a change in shares of -11.69% during the quarter. The current value of the position is $132,968,267 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F IDEXX LABS COM 45168D104 236,531 -31,319 -11.69 132,904 -26.66 0.1078
2026-02-10 2025-12-31 13F IDEXX LABS COM 45168D104 267,850 -36,340 -11.95 181,209 -6.76 0.1458
2025-11-10 2025-09-30 13F IDEXX LABS COM 45168D104 304,190 -25,321 -7.68 194,344 9.97 0.1578
2025-07-28 2025-06-30 13F IDEXX LABS COM 45168D104 329,511 35,798 12.19 176,730 43.28 0.1508
2025-05-07 2025-03-31 13F IDEXX LABS COM 45168D104 293,713 19,908 7.27 123,345 8.96 0.1135
2025-02-11 2024-12-31 13F IDEXX LABS COM 45168D104 273,805 -20,907 -7.09 113,202 -24.95 0.1002
2024-11-01 2024-09-30 13F IDEXX LABS COM 45168D104 294,712 -15,421 -4.97 150,828 -0.18 0.1331
2024-08-02 2024-06-30 13F IDEXX LABS COM 45168D104 310,133 -1,834 -0.59 151,097 -10.30 0.1409
2024-05-08 2024-03-31 13F IDEXX LABS COM 45168D104 311,967 51,959 19.98 168,440 16.72 0.1567
2024-02-12 2023-12-31 13F IDEXX LABS COM 45168D104 260,008 166,751 178.81 144,317 253.91 0.1419
2023-10-27 2023-09-30 13F IDEXX LABS COM 45168D104 93,257 -1,769 -1.86 40,778 -14.55 0.0494
2023-08-09 2023-06-30 13F IDEXX LABS COM 45168D104 95,026 42,281 80.16 47,725 80.94 0.0544
2023-05-10 2023-03-31 13F IDEXX LABS COM 45168D104 52,745 516 0.99 26,377 23.79 0.0318
2023-02-07 2022-12-31 13F IDEXX LABS COM 45168D104 52,229 3,616 7.44 21,307 32.10 0.0263
2022-11-07 2022-09-30 13F IDEXX LABS COM 45168D104 48,613 342 0.71 16,130 -4.73 0.0202
2022-08-04 2022-06-30 13F IDEXX LABS COM 45168D104 48,271 -1,626 -3.26 16,930 -37.98 0.0196
2022-05-10 2022-03-31 13F IDEXX LABS COM 45168D104 49,897 1,435 2.96 27,297 -14.46 0.0161
2022-02-10 2021-12-31 13F IDEXX LABS COM 45168D104 48,462 -40,531 -45.54 31,910 -42.34 0.0267
2021-11-09 2021-09-30 13F IDEXX LABS COM 45168D104 88,993 -228 -0.26 55,345 -8.58 0.0575
2021-08-11 2021-06-30 13F IDEXX LABS COM 45168D104 89,221 -7,845 -8.08 60,539 27.46 0.0615
2021-05-14 2021-03-31 13F IDEXX LABS COM 45168D104 97,066 -11,319 -10.44 47,495 -12.34 0.0531
2021-02-16 2020-12-31 13F IDEXX LABS COM 45168D104 108,385 -7,925 -6.81 54,178 18.49 0.0658
2020-11-10 2020-09-30 13F IDEXX LABS COM 45168D104 116,310 9,624 9.02 45,723 29.81 0.0634
2020-08-13 2020-06-30 13F IDEXX LABS COM 45168D104 106,686 4,619 4.53 35,223 42.46 0.0501
2020-05-15 2020-03-31 13F IDEXX LABS COM 45168D104 102,067 14,635 16.74 24,725 8.30 0.0418
2020-02-11 2019-12-31 13F IDEXX LABS COM 45168D104 87,432 5,737 7.02 22,831 2.77 0.0331
2019-11-07 2019-09-30 13F IDEXX LABS COM 45168D104 81,695 287 0.35 22,215 -0.89 0.0340
2019-08-01 2019-06-30 13F IDEXX LABS COM 45168D104 81,408 -1,738 -2.09 22,414 20.56 0.0336
2019-05-08 2019-03-31 13F IDEXX LABS COM 45168D104 83,146 7,651 10.13 18,591 32.39 0.0284
2019-02-01 2018-12-31 13F IDEXX LABS COM 45168D104 75,495 -2,512 -3.22 14,043 -27.89 0.0244
2018-11-01 2018-09-30 13F IDEXX LABS COM 45168D104 78,007 -12,638 -13.94 19,475 -1.42 0.0288
2018-07-31 2018-06-30 13F IDEXX LABS COM 45168D104 90,645 21,233 30.59 19,755 48.70 0.0301
2018-05-11 2018-03-31 13F IDEXX LABS COM 45168D104 69,412 9,739 16.32 13,285 42.36 0.0203
2018-02-02 2017-12-31 13F IDEXX LABS COM 45168D104 59,673 15,578 35.33 9,332 36.11 0.0136
2017-11-09 2017-09-30 13F IDEXX LABS COM 45168D104 44,095 -1,704 -3.72 6,856 -7.26 0.0103
2017-08-01 2017-06-30 13F IDEXX LABS COM 45168D104 45,799 -27,126 -37.20 7,393 -34.43 0.0117
2017-05-05 2017-03-31 13F IDEXX LABS COM 45168D104 72,925 25,820 54.81 11,275 104.11 0.0180
2017-02-08 2016-12-31 13F IDEXX LABS COM 45168D104 47,105 -995 -2.07 5,524 1.88 0.0093
2016-11-02 2016-09-30 13F IDEXX LABS COM 45168D104 48,100 1,200 2.56 5,422 24.50 0.0094
2016-08-04 2016-06-30 13F IDEXX LABS COM 45168D104 46,900 -100 -0.21 4,355 18.31 0.0079
2016-05-05 2016-03-31 13F IDEXX LABS COM 45168D104 47,000 -67,300 -58.88 3,681 -55.84 0.0069
2016-02-04 2015-12-31 13F IDEXX LABS COM 45168D104 114,300 -16,100 -12.35 8,335 -13.91 0.0165
2015-11-12 2015-09-30 13F IDEXX LABS COM 45168D104 130,400 4,200 3.33 9,682 19.62 0.0191
2015-08-11 2015-06-30 13F IDEXX LABS COM 45168D104 126,200 62,800 99.05 8,094 -17.36 0.0145
2015-04-28 2015-03-31 13F IDEXX LABS COM 45168D104 63,400 63,400 0.00 9,794 0.0177
2015-01-30 2014-12-31 13F IDEXX LABS COM 45168D104 0 -75,400 -100.00 0 -100.00
2014-11-06 2014-09-30 13F IDEXX LABS COM 45168D104 75,400 -17,300 -18.66 8,884 -28.25 0.0153
2014-08-12 2014-06-30 13F IDEXX LABS COM 45168D104 92,700 -700 -0.75 12,382 9.20 0.0211
2014-05-09 2014-03-31 13F IDEXX LABS COM 45168D104 93,400 7,500 8.73 11,339 24.10 0.0206
2014-02-07 2013-12-31 13F IDEXX LABS COM 45168D104 85,900 800 0.94 9,137 7.75 0.0171
2013-11-08 2013-09-30 13F IDEXX LABS COM 45168D104 85,100 4,100 5.06 8,480 16.61 0.0168
2013-07-24 2013-06-30 13F IDEXX LABS COM 45168D104 81,000 81,000 7,272 0.0156
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.