Picton Mahoney Asset Management’s Idexx Laboratories IDXX Stock Holding History

Picton Mahoney 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 Q1	$390K	Buy	694 +169	+32%	+$108K	﹤0.01%	793
2025 Q4	$355K	Buy	+525	New	+$358K	﹤0.01%	762
2020 Q1	–	Sell	-38,600	Closed	-$10.1M	–	322
2019 Q4	$10.1M	Sell	38,600 -8,700	-18%	-$2.29M	0.68%	52
2019 Q3	$12.9M	Sell	47,300 -3,200	-6%	-$890K	0.91%	39
2019 Q2	$13.9M	Sell	50,500 -1,300	-3%	-$320K	0.95%	38
2019 Q1	$11.6M	Sell	51,800 -1,000	-2%	-$206K	0.88%	43
2018 Q4	$9.82M	Sell	52,800 -10,700	-17%	-$2.19M	0.88%	43
2018 Q3	$15.9M	Sell	63,500 -2,100	-3%	-$510K	1.11%	30
2018 Q2	$14.3M	Buy	65,600 +30,200	+85%	+$6.22M	1.03%	36
2018 Q1	$6.78M	Buy	+35,400	New	+$6.53M	0.49%	70

Other funds holding IDXX

BlackRock New York $6.73T AUM 46.02% 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 $3.37T AUM 44.26% 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 $609B AUM 40.19% 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

Picton Mahoney Asset Management's IDXX Position: Q1 2026 in Review

Picton Mahoney Asset Management increased its Idexx Laboratories (IDXX) stake by 32% in Q1 2026, buying an estimated $108K and bringing the position to 694 shares worth $390K. The position accounts for ﹤0.01% of the portfolio, ranked #793.

Picton Mahoney Asset Management first reported a position in IDXX in Q1 2018 and has held it in 10 quarters since. The position peaked at $15.9M in Q3 2018. 1,314 funds tracked by Wall St. Rank hold IDXX as of Q1 2026.

Picton Mahoney Asset Management held 694 shares of Idexx Laboratories worth $390K as of Q1 2026.
Picton Mahoney Asset Management bought 169 Idexx Laboratories shares in Q1 2026, an estimated $108K.
Idexx Laboratories made up ﹤0.01% of Picton Mahoney Asset Management's portfolio in Q1 2026, its #793 holding.
Picton Mahoney Asset Management first reported a position in Idexx Laboratories in Q1 2018 and has held it in 10 quarters since.
Picton Mahoney Asset Management's Idexx Laboratories position peaked at $15.9M in Q3 2018.
1,314 funds tracked by Wall St. Rank held Idexx Laboratories as of Q1 2026.

Based on Picton Mahoney Asset Management's 13F filing for Q1 2026, filed 13 May 2026.