Sienna Gestion’s Idexx Laboratories IDXX Stock Holding History

Sienna Gestion’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	$11.1M	Buy	19,826 +17,685	+826%	+$11.3M	0.73%	45
2025 Q4	$1.45M	Buy	+2,141	New	+$1.46M	0.09%	128

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

Sienna Gestion's IDXX Position: Q1 2026 in Review

Sienna Gestion increased its Idexx Laboratories (IDXX) stake by 826% in Q1 2026, buying an estimated $11.3M and bringing the position to 19,826 shares worth $11.1M. The position accounts for 0.73% of the portfolio, ranked #45.

Sienna Gestion first reported a position in IDXX in Q4 2025 and has held it in 2 quarters since. 1,311 funds tracked by Wall St. Rank hold IDXX as of Q1 2026.

Sienna Gestion held 19,826 shares of Idexx Laboratories worth $11.1M as of Q1 2026.
Sienna Gestion bought 17,685 Idexx Laboratories shares in Q1 2026, an estimated $11.3M.
Idexx Laboratories made up 0.73% of Sienna Gestion's portfolio in Q1 2026, its #45 holding.
Sienna Gestion first reported a position in Idexx Laboratories in Q4 2025 and has held it in 2 quarters since.
1,311 funds tracked by Wall St. Rank held Idexx Laboratories as of Q1 2026.

Based on Sienna Gestion's 13F filing for Q1 2026, filed 15 May 2026.