IDEXX Laboratories, Inc.
US ˙ NasdaqGS ˙ US45168D1046

SecurityIDXX / IDEXX Laboratories, Inc.
InstitutionShell Asset Management Co
Latest Disclosed Ownership2,416 shares
Latest Disclosed Value $ 1,544
Shell Asset Management Co reports 36.03% decrease in ownership of IDXX / IDEXX Laboratories, Inc.

On November 7, 2025 - Shell Asset Management Co filed a 13F-HR form disclosing ownership of 2,416 shares of IDEXX Laboratories, Inc. (US:IDXX) valued at $1,543,558 USD as of September 30, 2025. The entity filed a previous 13F-HR on July 23, 2025 disclosing 3,777 shares of IDEXX Laboratories, Inc.. This represents a change in shares of -36.03% during the quarter. The current value of the position is $1,358,179 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)
2025-11-07 2025-09-30 13F IDEXX LABS COM 45168D104 2,416 -1,361 -36.03 2 -50.00 0.1551
2025-07-23 2025-06-30 13F IDEXX LABS COM 45168D104 3,777 2,080 122.57 2 0.0700
2025-05-14 2025-03-31 13F IDEXX LABS COM 45168D104 1,697 -88 -4.93 1 0.0339
2025-02-14 2024-12-31 13F IDEXX LABS COM 45168D104 1,785 -48 -2.62 1 0.0322
2024-11-07 2024-09-30 13F IDEXX LABS COM 45168D104 1,833 0 0.00 1 0.0408
2024-07-25 2024-03-31 13F IDEXX LABS COM 45168D104 1,833 -1,570 -46.14 1 -100.00 0.0407
2024-02-14 2023-12-31 13F IDEXX LABS COM 45168D104 3,403 -920 -21.28 2 0.00 0.0872
2023-11-08 2023-09-30 13F IDEXX LABS COM 45168D104 4,323 -72 -1.64 2 -50.00 0.0781
2023-07-28 2023-06-30 13F IDEXX LABS COM 45168D104 4,395 -692 -13.60 2 0.00 0.0870
2023-05-15 2023-03-31 13F IDEXX LABS COM 45168D104 5,087 -64 -1.24 3 0.00 0.1056
2023-02-07 2022-12-31 13F IDEXX LABS COM 45168D104 5,151 -909 -15.00 2 -99.90 0.0920
2022-11-14 2022-09-30 13F IDEXX LABS COM 45168D104 6,060 -1,709 -22.00 1,974 -27.56 0.0769
2022-08-09 2022-06-30 13F IDEXX LABS COM 45168D104 7,769 823 11.85 2,725 -28.29 0.0806
2022-05-04 2022-03-31 13F IDEXX LABS COM 45168D104 6,946 -1,625 -18.96 3,800 -32.67 0.0897
2022-02-09 2021-12-31 13F IDEXX LABS COM 45168D104 8,571 1,240 16.91 5,644 23.80 0.1158
2021-11-04 2021-09-30 13F IDEXX LABS COM 45168D104 7,331 635 9.48 4,559 7.80 0.1024
2021-08-12 2021-06-30 13F IDEXX LABS COM 45168D104 6,696 1,543 29.94 4,229 67.75 0.0820
2021-05-10 2021-03-31 13F IDEXX LABS COM 45168D104 5,153 410 8.64 2,521 6.33 0.0504
2021-02-16 2020-12-31 13F IDEXX LABS COM 45168D104 4,743 1,278 36.88 2,371 74.08 0.0490
2020-11-13 2020-09-30 13F IDEXX LABS COM 45168D104 3,465 296 9.34 1,362 30.21 0.0317
2020-08-10 2020-06-30 13F IDEXX LABS COM 45168D104 3,169 -597 -15.85 1,046 14.69 0.0261
2020-05-11 2020-03-31 13F IDEXX LABS COM 45168D104 3,766 -300 -7.38 912 -14.12 0.0254
2020-02-13 2019-12-31 13F IDEXX LABS COM 45168D104 4,066 -1,038 -20.34 1,062 -23.49 0.0229
2019-11-12 2019-09-30 13F IDEXX LABS COM 45168D104 5,104 0 0.00 1,388 -1.21 0.0317
2019-08-12 2019-06-30 13F IDEXX LABS COM 45168D104 5,104 155 3.13 1,405 26.92 0.0311
2019-05-09 2019-03-31 13F IDEXX LABS COM 45168D104 4,949 0 0.00 1,107 20.20 0.0244
2019-02-13 2018-12-31 13F IDEXX LABS COM 45168D104 4,949 -1,481 -23.03 921 -42.62 0.0230
2018-11-13 2018-09-30 13F IDEXX LABS COM 45168D104 6,430 -26 -0.40 1,605 14.07 0.0317
2018-08-10 2018-06-30 13F IDEXX LABS COM 45168D104 6,456 1,216 23.21 1,407 40.28 0.0288
2018-05-14 2018-03-31 13F IDEXX LABS COM 45168D104 5,240 805 18.15 1,003 44.52 0.0200
2018-02-09 2017-12-31 13F IDEXX LABS COM 45168D104 4,435 575 14.90 694 15.67 0.0138
2017-10-20 2017-09-30 13F/A-1 IDEXX LABS COM 45168D104 3,860 -1,228 -24.14 600 -26.92 0.0133
2017-07-26 2017-06-30 13F IDEXX LABS COM 45168D104 5,088 0 0.00 821 4.32 0.0204
2017-04-26 2017-03-31 13F IDEXX LABS COM 45168D104 5,088 165 3.35 787 36.40 0.0201
2017-01-10 2016-12-31 13F IDEXX LABS COM 45168D104 4,923 -2,714 -35.54 577 -32.98 0.0156
2016-10-28 2016-09-30 13F IDEXX LABS COM 45168D104 7,637 36 0.47 861 21.95 0.0206
2016-07-25 2016-06-30 13F IDEXX LABS COM 45168D104 7,601 7,601 0.00 706 0.0164
2016-02-05 2015-12-31 13F IDEXX LABS COM 45168D104 0 0 0 0.0000
2015-10-13 2015-09-30 13F IDEXX LABS COM 45168D104 0 -2,606 -100.00 0 -100.00
2015-07-30 2015-06-30 13F IDEXX LABS COM 45168D104 2,606 2,606 167 0.0033
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.