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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
Q2 		$8.11M Sell
14,960
-4,866
-25% -$2.73M 0.48% 77
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
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

Sienna Gestion's IDXX Position: Q2 2026 in Review

Sienna Gestion reduced its Idexx Laboratories (IDXX) stake by 25% in Q2 2026, selling an estimated $2.73M and leaving 14,960 shares worth $8.11M. The position accounts for 0.48% of the portfolio, ranked #77.

Sienna Gestion first reported a position in IDXX in Q4 2025 and has held it in 3 quarters since. The position peaked at $11.1M in Q1 2026. 1,302 funds tracked by Wall St. Rank hold IDXX as of Q2 2026.

  • Sienna Gestion held 14,960 shares of Idexx Laboratories worth $8.11M as of Q2 2026.
  • Sienna Gestion sold 4,866 Idexx Laboratories shares in Q2 2026, an estimated $2.73M.
  • Idexx Laboratories made up 0.48% of Sienna Gestion's portfolio in Q2 2026, its #77 holding.
  • Sienna Gestion first reported a position in Idexx Laboratories in Q4 2025 and has held it in 3 quarters since.
  • Sienna Gestion's Idexx Laboratories position peaked at $11.1M in Q1 2026.
  • 1,302 funds tracked by Wall St. Rank held Idexx Laboratories as of Q2 2026.

Based on Sienna Gestion's 13F filing for Q2 2026, filed 13 Aug 2026.