TCW Group’s Idexx Laboratories IDXX Stock Holding History

TCW Group’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	$66.7M	Buy	118,751 +54,007	+83%	+$34.6M	0.5%	64
2025 Q4	$43.8M	Buy	+64,744	New	+$44.1M	0.31%	80
2020 Q1	–	Sell	-57,624	Closed	-$15M	–	316
2019 Q4	$15M	Sell	57,624 -11,499	-17%	-$3.03M	0.17%	107
2019 Q3	$18.8M	Sell	69,123 -6,084	-8%	-$1.69M	0.21%	98
2019 Q2	$20.7M	Sell	75,207 -19,623	-21%	-$4.83M	0.22%	96
2019 Q1	$21.2M	Sell	94,830 -8,286	-8%	-$1.71M	0.2%	99
2018 Q4	$19.2M	Sell	103,116 -9,107	-8%	-$1.87M	0.2%	105
2018 Q3	$28M	Buy	112,223 +20,986	+23%	+$5.09M	0.23%	101
2018 Q2	$19.9M	Sell	91,237 -64,140	-41%	-$13.2M	0.16%	114
2018 Q1	$29.7M	Sell	155,377 -98	-0.1%	-$18.1K	0.24%	95
2017 Q4	$24.3M	Buy	+155,475	New	+$24.5M	0.2%	101

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

TCW Group's IDXX Position: Q1 2026 in Review

TCW Group increased its Idexx Laboratories (IDXX) stake by 83% in Q1 2026, buying an estimated $34.6M and bringing the position to 118,751 shares worth $66.7M. The position accounts for 0.5% of the portfolio, ranked #64.

TCW Group first reported a position in IDXX in Q4 2017 and has held it in 11 quarters since. 1,311 funds tracked by Wall St. Rank hold IDXX as of Q1 2026.

TCW Group held 118,751 shares of Idexx Laboratories worth $66.7M as of Q1 2026.
TCW Group bought 54,007 Idexx Laboratories shares in Q1 2026, an estimated $34.6M.
Idexx Laboratories made up 0.5% of TCW Group's portfolio in Q1 2026, its #64 holding.
TCW Group first reported a position in Idexx Laboratories in Q4 2017 and has held it in 11 quarters since.
1,311 funds tracked by Wall St. Rank held Idexx Laboratories as of Q1 2026.

Based on TCW Group's 13F filing for Q1 2026, filed 14 May 2026.