IDEXX Laboratories, Inc.
US ˙ NasdaqGS ˙ US45168D1046

SecurityIDXX / IDEXX Laboratories, Inc.
InstitutionOMERS ADMINISTRATION Corp
Latest Disclosed Ownership12,011 shares
Latest Disclosed Value $ 6,748,861
OMERS ADMINISTRATION Corp reports 88.17% increase in ownership of IDXX / IDEXX Laboratories, Inc.

On May 15, 2026 - OMERS ADMINISTRATION Corp filed a 13F-HR form disclosing ownership of 12,011 shares of IDEXX Laboratories, Inc. (US:IDXX) valued at $6,748,861 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 6,383 shares of IDEXX Laboratories, Inc.. This represents a change in shares of 88.17% during the quarter. The current value of the position is $6,734,928 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)
2026-05-15 2026-03-31 13F IDEXX LABS COM 45168D104 12,011 5,628 88.17 6,749 56.28 0.0434
2026-02-13 2025-12-31 13F IDEXX LABS COM 45168D104 6,383 0 0.00 4,318 5.89 0.0308
2025-11-14 2025-09-30 13F IDEXX LABS COM 45168D104 6,383 -600 -8.59 4,078 8.89 0.0292
2025-08-13 2025-06-30 13F IDEXX LABS COM 45168D104 6,983 -500 -6.68 3,745 19.19 0.0294
2025-05-14 2025-03-31 13F IDEXX LABS COM 45168D104 7,483 603 8.76 3,142 10.48 0.0275
2025-02-14 2024-12-31 13F IDEXX LABS COM 45168D104 6,880 389 5.99 2,844 -13.27 0.0249
2024-11-13 2024-09-30 13F IDEXX LABS COM 45168D104 6,491 -700 -9.73 3,279 -6.39 0.0302
2024-08-13 2024-06-30 13F IDEXX LABS COM 45168D104 7,191 7,191 3,503 0.0337
2020-05-15 2020-03-31 13F IDEXX LABS COM 45168D104 0 -26,700 -100.00 0 -100.00
2020-02-14 2019-12-31 13F IDEXX LABS COM 45168D104 26,700 -2,000 -6.97 6,972 -10.66 0.0805
2019-11-12 2019-09-30 13F IDEXX LABS COM 45168D104 28,700 6,400 28.70 7,804 25.41 0.0778
2019-08-08 2019-06-30 13F IDEXX LABS COM 45168D104 22,300 19,700 757.69 6,223 933.72 0.0647
2019-05-15 2019-03-31 13F IDEXX LABS COM 45168D104 2,600 2,600 602 0.0069
2018-05-11 2018-03-31 13F IDEXX LABS COM 45168D104 0 -19,100 -100.00 0 -100.00
2018-05-14 2017-12-31 13F/A-1 IDEXX LABS COM 45168D104 19,100 -5,300 -21.72 2,987 -21.27 0.0298
2018-02-13 2017-12-31 13F IDEXX LABS COM 45168D104 19,100 -5,300 2,987
2018-05-14 2017-09-30 13F/A-1 IDEXX LABS COM 45168D104 24,400 24,400 3,794 0.0420
2017-11-13 2017-09-30 13F IDEXX LABS COM 45168D104 24,400 24,400 3,794
2017-02-09 2016-12-31 13F IDEXX LABS COM 45168D104 0 -14,300 -100.00 0 -100.00
2016-11-14 2016-09-30 13F IDEXX LABS COM 45168D104 14,300 -32,600 -69.51 1,612 -62.99 0.0287
2016-08-11 2016-06-30 13F IDEXX LABS COM 45168D104 46,900 -1,700 -3.50 4,355 14.42 0.0896
2016-05-12 2016-03-31 13F IDEXX LABS COM 45168D104 48,600 -104,700 -68.30 3,806 -65.95 0.0844
2016-02-11 2015-12-31 13F IDEXX LABS COM 45168D104 153,300 -2,800 -1.79 11,179 -3.55 0.2890
2015-11-12 2015-09-30 13F IDEXX LABS COM 45168D104 156,100 -1,600 -1.01 11,590 14.58 0.3378
2015-08-11 2015-06-30 13F IDEXX LABS COM 45168D104 157,700 85,900 119.64 10,115 -8.81 0.4017
2015-05-12 2015-03-31 13F IDEXX LABS COM 45168D104 71,800 4,900 7.32 11,092 11.83 0.4160
2015-02-11 2014-12-31 13F IDEXX LABS COM 45168D104 66,900 42,700 176.45 9,919 247.91 0.3001
2014-11-10 2014-09-30 13F IDEXX LABS COM 45168D104 24,200 12,100 100.00 2,851 94.08 0.0850
2014-05-08 2014-03-31 13F IDEXX LABS COM 45168D104 12,100 12,100 1,469 0.0475
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.