William Blair & Company
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William Blair & Company’s Idexx Laboratories IDXX Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2025
Q2
$580M Sell
1,080,505
-10,265
-0.9% -$5.51M 1.61% 7
2025
Q1
$458M Sell
1,090,770
-14,244
-1% -$5.98M 1.38% 11
2024
Q4
$457M Sell
1,105,014
-60,555
-5% -$25M 1.33% 12
2024
Q3
$589M Sell
1,165,569
-7,489
-0.6% -$3.78M 1.73% 5
2024
Q2
$572M Sell
1,173,058
-16,086
-1% -$7.84M 1.76% 6
2024
Q1
$642M Sell
1,189,144
-12,107
-1% -$6.54M 2.02% 4
2023
Q4
$667M Buy
1,201,251
+1,306
+0.1% +$725K 2.27% 4
2023
Q3
$525M Buy
1,199,945
+7,812
+0.7% +$3.42M 2.01% 4
2023
Q2
$599M Sell
1,192,133
-17,061
-1% -$8.57M 2.19% 4
2023
Q1
$605M Buy
1,209,194
+3,437
+0.3% +$1.72M 2.42% 3
2022
Q4
$492M Sell
1,205,757
-19,111
-2% -$7.8M 2.14% 4
2022
Q3
$399M Sell
1,224,868
-5,819
-0.5% -$1.9M 1.83% 6
2022
Q2
$432M Sell
1,230,687
-25,334
-2% -$8.89M 1.92% 6
2022
Q1
$687M Sell
1,256,021
-34,011
-3% -$18.6M 2.41% 4
2021
Q4
$849M Sell
1,290,032
-3,871
-0.3% -$2.55M 2.66% 4
2021
Q3
$805M Sell
1,293,903
-56,062
-4% -$34.9M 2.74% 4
2021
Q2
$853M Sell
1,349,965
-40,231
-3% -$25.4M 2.95% 4
2021
Q1
$680M Sell
1,390,196
-88,432
-6% -$43.3M 2.57% 4
2020
Q4
$739M Sell
1,478,628
-32,211
-2% -$16.1M 2.71% 4
2020
Q3
$594M Sell
1,510,839
-40,835
-3% -$16.1M 2.52% 4
2020
Q2
$512M Sell
1,551,674
-11,580
-0.7% -$3.82M 2.44% 5
2020
Q1
$379M Buy
1,563,254
+17,274
+1% +$4.18M 2.37% 5
2019
Q4
$404M Sell
1,545,980
-199
-0% -$52K 2.07% 5
2019
Q3
$420M Sell
1,546,179
-27,469
-2% -$7.47M 2.42% 5
2019
Q2
$433M Sell
1,573,648
-8,574
-0.5% -$2.36M 2.48% 5
2019
Q1
$354M Buy
1,582,222
+10,586
+0.7% +$2.37M 2.16% 5
2018
Q4
$292M Buy
1,571,636
+33,525
+2% +$6.24M 2.13% 5
2018
Q3
$384M Sell
1,538,111
-36,279
-2% -$9.06M 2.35% 5
2018
Q2
$343M Sell
1,574,390
-45,549
-3% -$9.93M 2.33% 5
2018
Q1
$310M Sell
1,619,939
-161,215
-9% -$30.9M 2.19% 5
2017
Q4
$279M Sell
1,781,154
-606
-0% -$94.8K 1.89% 5
2017
Q3
$277M Sell
1,781,760
-15,694
-0.9% -$2.44M 2.08% 3
2017
Q2
$290M Sell
1,797,454
-92,572
-5% -$14.9M 2.18% 2
2017
Q1
$286M Sell
1,890,026
-234,542
-11% -$35.4M 2.3% 2
2016
Q4
$249M Sell
2,124,568
-114,931
-5% -$13.5M 2.23% 2
2016
Q3
$252M Sell
2,239,499
-83,195
-4% -$9.38M 2.23% 2
2016
Q2
$216M Sell
2,322,694
-151,569
-6% -$14.1M 2.01% 2
2016
Q1
$194M Sell
2,474,263
-33,209
-1% -$2.6M 1.82% 5
2015
Q4
$183M Sell
2,507,472
-26,839
-1% -$1.96M 1.72% 5
2015
Q3
$188M Sell
2,534,311
-2,310,126
-48% -$172M 1.63% 6
2015
Q2
$311M Buy
4,844,437
+2,314,767
+92% +$148M 0.46% 29
2015
Q1
$391M Sell
2,529,670
-272,156
-10% -$42M 0.6% 9
2014
Q4
$415M Buy
2,801,826
+8,792
+0.3% +$1.3M 0.67% 4
2014
Q3
$329M Sell
2,793,034
-28,762
-1% -$3.39M 0.56% 11
2014
Q2
$377M Sell
2,821,796
-679,216
-19% -$90.7M 0.62% 9
2014
Q1
$425M Sell
3,501,012
-661,644
-16% -$80.3M 0.7% 10
2013
Q4
$443M Sell
4,162,656
-621,839
-13% -$66.1M 0.73% 8
2013
Q3
$477M Buy
4,784,495
+129,673
+3% +$12.9M 0.85% 5
2013
Q2
$418M Buy
+4,654,822
New +$418M 0.83% 6