Congress Asset Management’s Idexx Laboratories IDXX Stock Holding History

Congress Asset Management’s Portfolio IDXX Stock Details IDXX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$100M	Buy	190,193 +23,507	+14%	+$13.2M	0.62%	61
2026 Q1	$93.7M	Buy	166,686 +12,778	+8%	+$8.19M	0.67%	49
2025 Q4	$104M	Buy	153,908 +152,368	+9,894%	+$104M	0.73%	44
2025 Q3	$984K	Sell	1,540 -984	-39%	-$597K	0.01%	319
2025 Q2	$1.35M	Sell	2,524 -43	-2%	-$20.6K	0.01%	303
2025 Q1	$1.08M	Sell	2,567 -365	-12%	-$158K	0.01%	305
2024 Q4	$1.21M	Sell	2,932 -1,236	-30%	-$542K	0.01%	306
2024 Q3	$2.11M	Sell	4,168 -193	-4%	-$93.8K	0.01%	274
2024 Q2	$2.12M	Sell	4,361 -138	-3%	-$69.3K	0.02%	275
2024 Q1	$2.43M	Sell	4,499 -72	-2%	-$39.3K	0.02%	269
2023 Q4	$2.54M	Sell	4,571 -641	-12%	-$301K	0.02%	282
2023 Q3	$2.28M	Sell	5,212 -355	-6%	-$177K	0.02%	275
2023 Q2	$2.8M	Buy	5,567 +46	+0.8%	+$22K	0.02%	261
2023 Q1	$2.76M	Buy	5,521 +410	+8%	+$196K	0.03%	259
2022 Q4	$2.09M	Buy	5,111 +1,214	+31%	+$471K	0.02%	283
2022 Q3	$1.27M	Sell	3,897 -6,111	-61%	-$2.24M	0.01%	294
2022 Q2	$3.51M	Buy	10,008 +1,241	+14%	+$506K	0.03%	240
2022 Q1	$4.8M	Sell	8,767 -5,466	-38%	-$2.88M	0.04%	233
2021 Q4	$9.37M	Sell	14,233 -7,188	-34%	-$4.51M	0.07%	175
2021 Q3	$13.3M	Sell	21,421 -200,180	-90%	-$135M	0.1%	116
2021 Q2	$140M	Sell	221,601 -1,798	-0.8%	-$993K	1.17%	29
2021 Q1	$109M	Sell	223,399 -4,118	-2%	-$2.06M	0.99%	47
2020 Q4	$114M	Sell	227,517 -9,787	-4%	-$4.38M	1.07%	41
2020 Q3	$93.3M	Sell	237,304 -558	-0.2%	-$206K	1.01%	45
2020 Q2	$78.5M	Buy	237,862 +15,809	+7%	+$4.58M	0.93%	56
2020 Q1	$53.8M	Buy	222,053 +220,935	+19,762%	+$57.7M	0.82%	68
2019 Q4	$292K	Hold	1,118	–	–	﹤0.01%	329
2019 Q3	$304K	Hold	1,118	–	–	﹤0.01%	328
2019 Q2	$308K	Sell	1,118 -220	-16%	-$54.2K	﹤0.01%	332
2019 Q1	$299K	Sell	1,338 -49	-4%	-$10.1K	﹤0.01%	338
2018 Q4	$258K	Hold	1,387	–	–	﹤0.01%	350
2018 Q3	$346K	Hold	1,387	–	–	﹤0.01%	346
2018 Q2	$302K	Sell	1,387 -253	-15%	-$52.1K	﹤0.01%	348
2018 Q1	$314K	Sell	1,640 -263	-14%	-$48.5K	﹤0.01%	360
2017 Q4	$298K	Sell	1,903 -175	-8%	-$27.5K	﹤0.01%	359
2017 Q3	$323K	Sell	2,078 -98	-5%	-$15.5K	0.01%	370
2017 Q2	$351K	Sell	2,176 -42	-2%	-$6.82K	0.01%	238
2017 Q1	$343K	Sell	2,218 -410	-16%	-$56.5K	0.01%	235
2016 Q4	$308K	Buy	2,628 +112	+4%	+$12.8K	0.01%	240
2016 Q3	$284K	Sell	2,516 -208	-8%	-$21.9K	0.01%	211
2016 Q2	$253K	Sell	2,724 -465,567	-99%	-$40M	0.01%	215
2016 Q1	$36.7M	Buy	468,291 +24,107	+5%	+$1.74M	0.89%	49
2015 Q4	$32.4M	Sell	444,184 -5,969	-1%	-$426K	0.8%	53
2015 Q3	$33.4M	Buy	450,153 +146,582	+48%	+$10.5M	0.86%	46
2015 Q2	$19.5M	Sell	303,571 -68,983	-19%	-$4.78M	0.56%	77
2015 Q1	$28.8M	Buy	372,554 +69,388	+23%	+$5.4M	0.69%	56
2014 Q4	$22.5M	Sell	303,166 -79,902	-21%	-$5.6M	0.57%	51
2014 Q3	$22.6M	Buy	383,068 +35,142	+10%	+$2.22M	0.58%	59
2014 Q2	$23.2M	Buy	347,926 +12,700	+4%	+$808K	0.59%	50
2014 Q1	$20.3M	Buy	335,226 +106,164	+46%	+$6.32M	0.51%	57
2013 Q4	$12.2M	Sell	229,062 -53,502	-19%	-$2.82M	0.32%	69
2013 Q3	$14.1M	Buy	282,564 +13,814	+5%	+$664K	0.39%	66
2013 Q2	$12.1M	Buy	+268,750	New	+$11.7M	0.36%	68

Other funds holding IDXX

Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.57% 1-Year Est. Return

SIM

Seilern Investment Management London, United Kingdom $794M AUM 6.63% 1-Year Est. Return

MJRIC

Mogy Joel R Investment Counsel Beverly Hills, California $1.75B AUM 17.81% 1-Year Est. Return

Riverbridge Partners Minneapolis, Minnesota $3.58B AUM 4.02% 1-Year Est. Return

MIM

Manitou Investment Management Toronto, Ontario, Canada $538M AUM 13.79% 1-Year Est. Return

BIAS

Beacon Investment Advisory Services Morristown, New Jersey $2.69B AUM 35.07% 1-Year Est. Return

HCM

Howland Capital Management Boston, Massachusetts $2.77B AUM 19.56% 1-Year Est. Return

Handelsbanken Fonder Stockholm, Sweden $35.1B AUM 47.76% 1-Year Est. Return

Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return

FCBT

First Citizens Bank & Trust Raleigh, North Carolina $6.69B AUM 24.48% 1-Year Est. Return

Congress Asset Management's IDXX Position: Q2 2026 in Review

Congress Asset Management increased its Idexx Laboratories (IDXX) stake by 14% in Q2 2026, buying an estimated $13.2M and bringing the position to 190,193 shares worth $100M. The position accounts for 0.62% of the portfolio, ranked #61.

Congress Asset Management first reported a position in IDXX in Q2 2013 and has held it in 53 quarters since. The position peaked at $140M in Q2 2021. 173 funds tracked by Wall St. Rank hold IDXX as of Q2 2026.

Congress Asset Management held 190,193 shares of Idexx Laboratories worth $100M as of Q2 2026.
Congress Asset Management bought 23,507 Idexx Laboratories shares in Q2 2026, an estimated $13.2M.
Idexx Laboratories made up 0.62% of Congress Asset Management's portfolio in Q2 2026, its #61 holding.
Congress Asset Management first reported a position in Idexx Laboratories in Q2 2013 and has held it in 53 quarters since.
Congress Asset Management's Idexx Laboratories position peaked at $140M in Q2 2021.
173 funds tracked by Wall St. Rank held Idexx Laboratories as of Q2 2026.

Based on Congress Asset Management's 13F filing for Q2 2026, filed 7 Jul 2026.