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Main Street Research’s Idexx Laboratories IDXX Stock Holding History

Main Street Research’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 		$316K Buy
600
+153
+34% +$85.8K 0.01% 112
2026
Q1 		$251K Buy
+447
New +$287K 0.01% 124
2025
Q4 		– Sell
-411
Closed -$263K – 136
2025
Q3 		$263K Buy
+411
New +$249K 0.01% 109

Other funds holding IDXX

MBI
Montrusco Bolton Investments Montreal, Quebec, Canada $6.46B AUM 26.7% 1-Year Est. Return
CGI
Comgest Global Investors Paris, France $4.55B AUM 11.62% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return
CAM
Congress Asset Management Boston, Massachusetts $16.3B AUM 42.69% 1-Year Est. Return
Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.57% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return
WF
Welch & Forbes Boston, Massachusetts $8.23B AUM 17.62% 1-Year Est. Return
RG
Rathbones Group Liverpool, United Kingdom $27.1B AUM 20.2% 1-Year Est. Return
LWCFA
Loring Wolcott & Coolidge Fiduciary Advisors Boston, Massachusetts $10.3B AUM 3.26% 1-Year Est. Return

Main Street Research's IDXX Position: Q2 2026 in Review

Main Street Research increased its Idexx Laboratories (IDXX) stake by 34% in Q2 2026, buying an estimated $85.8K and bringing the position to 600 shares worth $316K. The position accounts for 0.01% of the portfolio, ranked #112.

Main Street Research first reported a position in IDXX in Q3 2025 and has held it in 3 quarters since. 485 funds tracked by Wall St. Rank hold IDXX as of Q2 2026.

  • Main Street Research held 600 shares of Idexx Laboratories worth $316K as of Q2 2026.
  • Main Street Research bought 153 Idexx Laboratories shares in Q2 2026, an estimated $85.8K.
  • Idexx Laboratories made up 0.01% of Main Street Research's portfolio in Q2 2026, its #112 holding.
  • Main Street Research first reported a position in Idexx Laboratories in Q3 2025 and has held it in 3 quarters since.
  • 485 funds tracked by Wall St. Rank held Idexx Laboratories as of Q2 2026.

Based on Main Street Research's 13F filing for Q2 2026, filed 29 Jul 2026.