American Century Companies’s Idexx Laboratories IDXX Stock Holding History

American Century Companies’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 Q1	$337M	Sell	599,931 -29,003	-5%	-$18.6M	0.17%	77
2025 Q4	$425M	Sell	628,934 -76,224	-11%	-$51.9M	0.21%	59
2025 Q3	$451M	Sell	705,158 -148,003	-17%	-$89.8M	0.23%	49
2025 Q2	$458M	Sell	853,161 -14,831	-2%	-$7.09M	0.25%	46
2025 Q1	$365M	Buy	867,992 +58,178	+7%	+$25.3M	0.22%	62
2024 Q4	$335M	Buy	809,814 +191,385	+31%	+$83.9M	0.19%	69
2024 Q3	$312M	Buy	618,429 +55,665	+10%	+$27M	0.18%	86
2024 Q2	$274M	Buy	562,764 +177,226	+46%	+$89M	0.17%	98
2024 Q1	$208M	Sell	385,538 -21,100	-5%	-$11.5M	0.13%	155
2023 Q4	$226M	Sell	406,638 -328,069	-45%	-$154M	0.16%	133
2023 Q3	$321M	Sell	734,707 -103,948	-12%	-$51.8M	0.25%	77
2023 Q2	$421M	Sell	838,655 -196,239	-19%	-$94M	0.32%	52
2023 Q1	$518M	Sell	1,034,894 -475,266	-31%	-$227M	0.41%	39
2022 Q4	$616M	Sell	1,510,160 -18,799	-1%	-$7.3M	0.5%	27
2022 Q3	$498M	Buy	1,528,959 +1,639	+0.1%	+$602K	0.44%	34
2022 Q2	$536M	Buy	1,527,320 +103,720	+7%	+$42.3M	0.44%	35
2022 Q1	$779M	Buy	1,423,600 +346,118	+32%	+$182M	0.53%	21
2021 Q4	$709M	Sell	1,077,482 -41,316	-4%	-$25.9M	0.45%	33
2021 Q3	$696M	Buy	1,118,798 +5,034	+0.5%	+$3.38M	0.48%	35
2021 Q2	$703M	Buy	1,113,764 +4,639	+0.4%	+$2.56M	0.48%	32
2021 Q1	$543M	Buy	1,109,125 +12,864	+1%	+$6.44M	0.4%	49
2020 Q4	$548M	Sell	1,096,261 -121,908	-10%	-$54.5M	0.43%	42
2020 Q3	$479M	Buy	1,218,169 +17,419	+1%	+$6.44M	0.42%	43
2020 Q2	$396M	Buy	1,200,750 +97,611	+9%	+$28.3M	0.38%	58
2020 Q1	$267M	Buy	1,103,139 +2,012	+0.2%	+$525K	0.32%	83
2019 Q4	$288M	Sell	1,101,127 -272,168	-20%	-$71.7M	0.27%	105
2019 Q3	$373M	Sell	1,373,295 -65,904	-5%	-$18.3M	0.37%	64
2019 Q2	$396M	Sell	1,439,199 -43,875	-3%	-$10.8M	0.39%	55
2019 Q1	$332M	Buy	1,483,074 +780,846	+111%	+$161M	0.34%	77
2018 Q4	$131M	Buy	702,228 +110,611	+19%	+$22.7M	0.15%	195
2018 Q3	$148M	Sell	591,617 -239,230	-29%	-$58.1M	0.14%	206
2018 Q2	$181M	Sell	830,847 -53,753	-6%	-$11.1M	0.18%	162
2018 Q1	$169M	Sell	884,600 -61,791	-7%	-$11.4M	0.17%	180
2017 Q4	$148M	Buy	946,391 +231,216	+32%	+$36.4M	0.15%	195
2017 Q3	$111M	Buy	715,175 +234,197	+49%	+$37M	0.11%	246
2017 Q2	$77.6M	Buy	480,978 +273,398	+132%	+$44.4M	0.08%	297
2017 Q1	$32.1M	Buy	207,580 +80,170	+63%	+$11.1M	0.03%	441
2016 Q4	$14.9M	Buy	127,410 +117,848	+1,232%	+$13.4M	0.02%	589
2016 Q3	$1.08M	Hold	9,562	–	–	﹤0.01%	1147
2016 Q2	$888K	Sell	9,562 -2,605	-21%	-$224K	﹤0.01%	1164
2016 Q1	$953K	Buy	+12,167	New	+$876K	﹤0.01%	1113
2015 Q2	–	Sell	-11,618	Closed	-$897K	–	1369
2015 Q1	$897K	Sell	11,618 -244	-2%	-$19K	﹤0.01%	1167
2014 Q4	$879K	Hold	11,862	–	–	﹤0.01%	1204
2014 Q3	$699K	Sell	11,862 -1,229,098	-99%	-$77.7M	﹤0.01%	1245
2014 Q2	$82.9M	Sell	1,240,960 -56,260	-4%	-$3.58M	0.09%	266
2014 Q1	$78.7M	Sell	1,297,220 -91,282	-7%	-$5.44M	0.09%	270
2013 Q4	$73.8M	Buy	1,388,502 +364,036	+36%	+$19.2M	0.09%	281
2013 Q3	$51M	Sell	1,024,466 -371,592	-27%	-$17.9M	0.06%	334
2013 Q2	$62.7M	Buy	+1,396,058	New	+$61M	0.08%	292

Other funds holding IDXX

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return

Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return

Fundsmith LLP London, United Kingdom $12.8B AUM 6.9% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

American Century Companies's IDXX Position: Q1 2026 in Review

American Century Companies reduced its Idexx Laboratories (IDXX) stake by 4.6% in Q1 2026, selling an estimated $18.6M and leaving 599,931 shares worth $337M. The position accounts for 0.17% of the portfolio, ranked #77.

American Century Companies first reported a position in IDXX in Q2 2013 and has held it in 49 quarters since. The position peaked at $779M in Q1 2022. 1,312 funds tracked by Wall St. Rank hold IDXX as of Q1 2026.

American Century Companies held 599,931 shares of Idexx Laboratories worth $337M as of Q1 2026.
American Century Companies sold 29,003 Idexx Laboratories shares in Q1 2026, an estimated $18.6M.
Idexx Laboratories made up 0.17% of American Century Companies's portfolio in Q1 2026, its #77 holding.
American Century Companies first reported a position in Idexx Laboratories in Q2 2013 and has held it in 49 quarters since.
American Century Companies's Idexx Laboratories position peaked at $779M in Q1 2022.
1,312 funds tracked by Wall St. Rank held Idexx Laboratories as of Q1 2026.

Based on American Century Companies's 13F filing for Q1 2026, filed 15 May 2026.