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Marshall Wace, LLP

SEC CIK
0001318757
Latest filing
Aug 13, 2026

IDXX holding history

IDEXX Laboratories Inc in every 13F filed by Marshall Wace, LLP, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

IDXX overviewAll 13F holders of IDXXFull Q2 2026 holdings

Shares (Q2 2026)
93,128
Value
$49.0M
% of portfolio
<0.1%
Quarters held
19
Since Q1 2021
Holdings of IDXX by Marshall Wace, LLP, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 202693,128$49.0M<0.1%+43,833+88.9%AddedHolders
Q1 202649,295$27.7M<0.1%+48,068+3,917.5%AddedHolders
Q4 20251,227$830.1K<0.1%+727+145.4%AddedHolders
Q3 2025500$319.4K<0.1%−19,500−97.5%ReducedHolders
Q2 202520,000$10.7M<0.1%−90,549−81.9%ReducedHolders
Q1 2025110,549$46.4M0.1%−96,565−46.6%ReducedHolders
Q4 2024207,114$85.6M0.1%+178,841+632.6%AddedHolders
Q3 202428,273$14.3M<0.1%+7,773+37.9%AddedHolders
Q2 202420,500$9.99M<0.1%+500+2.5%AddedHolders
Q1 202420,000$10.8M<0.1%−28,287−58.6%ReducedHolders
Q4 202348,287$26.8M0.1%+28,287+141.4%AddedHolders
Q3 202320,000$8.75M<0.1%−31,983−61.5%ReducedHolders
Q2 202351,983$26.1M0.1%−247,165−82.6%ReducedHolders
Q1 2023299,148$149.6M0.4%+299,148NewHolders
Q4 20220$00.0%−31,553−100.0%Sold outHolders
Q3 202231,553$10.3M<0.1%+31,553NewHolders
Q1 20220$00.0%−2,942−100.0%Sold outHolders
Q4 20212,942$1.94M<0.1%−8,987−75.3%ReducedHolders
Q3 202111,929$7.42M<0.1%−22,249−65.1%ReducedHolders
Q2 202134,178$21.6M0.1%+12,985+61.3%AddedHolders
Q1 202121,193$10.4M0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.