IDEXX Laboratories, Inc.
US ˙ NasdaqGS ˙ US45168D1046

SecurityIDXX / IDEXX Laboratories, Inc.
InstitutionBessemer Group Inc
Latest Disclosed Ownership319,265 shares
Latest Disclosed Value $ 179,393
Bessemer Group Inc reports 2.54% increase in ownership of IDXX / IDEXX Laboratories, Inc.

On May 6, 2026 - Bessemer Group Inc filed a 13F-HR form disclosing ownership of 319,265 shares of IDEXX Laboratories, Inc. (US:IDXX) valued at $179,391,811 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 311,349 shares of IDEXX Laboratories, Inc.. This represents a change in shares of 2.54% during the quarter. The current value of the position is $179,021,463 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-06 2026-03-31 13F IDEXX LABS SC 45168D104 319,265 7,916 2.54 179 -14.76 0.2820
2026-02-05 2025-12-31 13F IDEXX LABS SC 45168D104 311,349 -40,919 -11.62 211 -6.67 0.3234
2025-11-05 2025-09-30 13F IDEXX LABS SC 45168D104 352,268 -29,560 -7.74 225 10.29 0.3442
2025-08-01 2025-06-30 13F IDEXX LABS SC 45168D104 381,828 41,766 12.28 205 43.66 0.3324
2025-04-23 2025-03-31 13F IDEXX LABS SC 45168D104 340,062 110,816 48.34 143 51.06 0.2560
2025-02-13 2024-12-31 13F IDEXX LABS SC 45168D104 229,246 216,572 1,708.79 95 1,466.67 0.1547
2024-11-12 2024-09-30 13F IDEXX LABS SC 45168D104 12,674 29 0.23 6 0.00 0.0105
2024-08-13 2024-06-30 13F IDEXX LABS SC 45168D104 12,645 -530 -4.02 6 -14.29 0.0109
2024-08-13 2024-03-31 13F/A-1 IDEXX LABS SC 45168D104 13,175 -2,441 -15.63 7 -12.50 0.0129
2024-05-13 2024-03-31 13F IDEXX LABS SC 45168D104 13,175 -2,441 7 0.0129
2024-02-09 2023-12-31 13F IDEXX LABS SC 45168D104 15,616 -454 -2.83 9 14.29 0.0169
2023-11-13 2023-09-30 13F IDEXX LABS SC 45168D104 16,070 879 5.79 7 0.00 0.0154
2023-08-10 2023-06-30 13F IDEXX LABS SC 45168D104 15,191 528 3.60 8 0.00 0.0162
2023-05-10 2023-03-31 13F IDEXX LABS SC 45168D104 14,663 -151 -1.02 7 16.67 0.0174
2023-02-13 2022-12-31 13F IDEXX LABS SC 45168D104 14,814 -70 -0.47 6 -99.88 0.0147
2022-11-09 2022-09-30 13F IDEXX LABS SC 45168D104 14,884 -230 -1.52 4,849 -8.54 0.0127
2022-08-10 2022-06-30 13F IDEXX LABS SC 45168D104 15,114 1,242 8.95 5,302 -30.14 0.0132
2022-05-12 2022-03-31 13F IDEXX LABS SC 45168D104 13,872 821 6.29 7,589 -11.69 0.0159
2022-01-27 2021-12-31 13F IDEXX LABS SC 45168D104 13,051 1,009 8.38 8,594 14.75 0.0172
2021-11-12 2021-09-30 13F IDEXX LABS SC 45168D104 12,042 12 0.10 7,489 -1.43 0.0160
2021-08-06 2021-06-30 13F IDEXX LABS SC 45168D104 12,030 28 0.23 7,598 29.39 0.0165
2021-05-13 2021-03-31 13F IDEXX LABS SC 45168D104 12,002 -285 -2.32 5,872 -4.40 0.0141
2021-02-09 2020-12-31 13F IDEXX LABS SC 45168D104 12,287 55 0.45 6,142 27.72 0.0162
2020-11-12 2020-09-30 13F IDEXX LABS SC 45168D104 12,232 -2,672 -17.93 4,809 -2.26 0.0142
2020-08-05 2020-06-30 13F IDEXX LABS SC 45168D104 14,904 3,879 35.18 4,920 84.27 0.0155
2020-04-30 2020-03-31 13F IDEXX LABS SC 45168D104 11,025 542 5.17 2,670 -2.48 0.0108
2020-02-04 2019-12-31 13F IDEXX LABS SC 45168D104 10,483 17 0.16 2,738 -3.79 0.0089
2019-11-07 2019-09-30 13F IDEXX LABS SC 45168D104 10,466 0 0.00 2,846 -1.21 0.0102
2019-07-19 2019-06-30 13F IDEXX LABS SC 45168D104 10,466 236 2.31 2,881 25.97 0.0097
2019-05-13 2019-03-31 13F IDEXX LABS SC 45168D104 10,230 -58 -0.56 2,287 19.49 0.0088
2019-05-21 2018-12-31 13F/A-1 IDEXX LABS SC 45168D104 10,288 100 0.98 1,914 -24.76 0.0083
2019-02-12 2018-12-31 13F IDEXX LABS SC 45168D104 10,288 100 1,914 0.0083
2018-11-06 2018-09-30 13F IDEXX LABS SC 45168D104 10,188 90 0.89 2,544 15.64 0.0095
2018-07-25 2018-06-30 13F IDEXX LABS SC 45168D104 10,098 -1,884 -15.72 2,200 -4.06 0.0085
2018-05-10 2018-03-31 13F IDEXX LABS SC 45168D104 11,982 437 3.79 2,293 27.04 0.0089
2018-01-30 2017-12-31 13F IDEXX LABS SC 45168D104 11,545 -69 -0.59 1,805 -0.06 0.0070
2017-11-03 2017-09-30 13F IDEXX LABS SC 45168D104 11,614 -68 -0.58 1,806 -4.19 0.0072
2017-07-27 2017-06-30 13F IDEXX LABS SC 45168D104 11,682 -1,751 -13.04 1,885 -9.20 0.0076
2017-05-12 2017-03-31 13F IDEXX LABS SC 45168D104 13,433 -4,482 -25.02 2,076 -1.19 0.0087
2017-02-07 2016-12-31 13F IDEXX LABS SC 45168D104 17,915 -374 -2.04 2,101 1.89 0.0097
2016-11-10 2016-09-30 13F IDEXX LABS SC 45168D104 18,289 -2,988 -14.04 2,062 4.35 0.0104
2016-08-11 2016-06-30 13F IDEXX LABS SC 45168D104 21,277 -3,124 -12.80 1,976 3.40 0.0108
2016-05-11 2016-03-31 13F IDEXX LABS SC 45168D104 24,401 -8,459 -25.74 1,911 -20.28 0.0108
2016-02-12 2015-12-31 13F IDEXX LABS SC 45168D104 32,860 -35 -0.11 2,397 -1.84 0.0133
2015-11-16 2015-09-30 13F IDEXX LABS SC 45168D104 32,895 -8,417 -20.37 2,442 -7.81 0.0140
2015-08-14 2015-06-30 13F IDEXX LABS SC 45168D104 41,312 24,482 145.47 2,649 1.88 0.0138
2015-06-18 2015-03-31 13F/A-1 IDEXX LABS SC 45168D104 16,830 0 0.00 2,600 4.17 0.0132
2015-05-14 2015-03-31 13F IDEXX LABS SC 45168D104 16,830 2,600
2015-02-17 2014-12-31 13F IDEXX LABS SC 45168D104 16,830 1,064 6.75 2,496 34.41 0.0134
2014-12-11 2014-09-30 13F/A-1 IDEXX LABS SC 45168D104 15,766 10,700 211.21 1,857 174.30 0.0105
2014-11-13 2014-09-30 13F IDEXX LABS SC 45168D104 15,766 10,700 1,857 0.0117
2014-08-13 2014-06-30 13F IDEXX LABS SC 45168D104 5,066 5,016 10,032.00 677 11,183.33 0.0042
2014-05-14 2014-03-31 13F IDEXX LABS SC 45168D104 50 0 0.00 6 20.00 0.0000
2014-02-18 2013-12-31 13F IDEXX LABS SC 45168D104 50 0 0.00 5 0.00 0.0000
2013-11-08 2013-09-30 13F IDEXX LABS SC 45168D104 50 0 0.00 5 25.00 0.0000
2013-08-14 2013-06-30 13F IDEXX LABS SC 45168D104 50 50 4 0.0000
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.