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IDEXX LABS INC

IDXX

Holders

2

Combined Value

$27.52M

Combined Shares

48,986

Current Price

$560.88

52W High

$769.98

vs 52W High

−27.2%

Investor Activity Chart

Quarterly buys (▲) and sells (▼) by tracked investors. Click a marker to view that investor's portfolio; hover for details. Price line is implied from 13F filings (value ÷ shares), not market data.

$360.82$483.60$606.37$729.15Q2'24Q3'24Q4'24Q1'25Q3'25Q4'25Q1'26Q2 2024 · implied price $487.20Q3 2024 · implied price $505.22Q4 2024 · implied price $413.44Q3 2025 · implied price $638.89Q4 2025 · implied price $676.53Q1 2026 · implied price $561.89Jim Simons - Renaissance Technologies · bought 20,604 shares @ ~$487.20 · Q2 2024 (new position)Jim Simons - Renaissance Technologies · bought 15,096 shares @ ~$505.22 · Q3 2024Jim Simons - Renaissance Technologies · sold 10,700 shares @ ~$413.44 · Q4 2024Jim Simons - Renaissance Technologies · sold 25,000 shares @ ~$413.44 · Q1 2025 (sold out)Jim Simons - Renaissance Technologies · bought 48,504 shares @ ~$561.89 · Q1 2026 (new position)Harris Associates (Oakmark Funds) · bought 27 shares @ ~$561.89 · Q1 2026Harris Associates (Oakmark Funds) · bought 455 shares @ ~$638.89 · Q3 2025 (new position)BUYSELLIMPLIED PRICE

Held By

Tracked investors currently holding this security, based on each investor's most recent 13F filing. Gain compares the current market price to each investor's estimated average buy price.

InvestorValue% of PortfolioAvg Buy PriceGainLast ActivityAs of
Jim Simons - Renaissance Technologies$27.25M0.04%~$561.89−0.2%BUY Q1 2026Q1 2026
Harris Associates (Oakmark Funds)$270.8K0.00%~$634.58−11.6%BUY Q1 2026Q1 2026

Recent Activity

Latest position changes by tracked investors. Prices are estimates implied from 13F filings.

QuarterInvestorActionEst. ValueEst. Price
Q1 2026Jim Simons - Renaissance TechnologiesNEW BUY+$27.25M~$561.89
Q1 2026Harris Associates (Oakmark Funds)BUY+$15.2K~$561.89
Q3 2025Harris Associates (Oakmark Funds)NEW BUY+$290.7K~$638.89
Q1 2025Jim Simons - Renaissance TechnologiesSOLD OUT−$10.34M~$413.44
Q4 2024Jim Simons - Renaissance TechnologiesSELL−$4.42M~$413.44
Q3 2024Jim Simons - Renaissance TechnologiesBUY+$7.63M~$505.22
Q2 2024Jim Simons - Renaissance TechnologiesNEW BUY+$10.04M~$487.20

Ownership History

Aggregate position across all tracked investors per quarter (options excluded). Implied price is the reported value divided by shares held.

PeriodHoldersTotal SharesΔ SharesTotal ValueImplied Price
Q1 2026248,986+10666.2%$27.52M$561.89
Q4 20251455UNCH$307.8K$676.53
Q3 20251455-98.2%$290.7K$638.89
Q4 2024125,000-30.0%$10.34M$413.44
Q3 2024135,700+73.3%$18.04M$505.22
Q2 2024120,604—$10.04M$487.20