IDXXIdexx Laboratories

$553.16

Who owns IDXX

1,276 institutions reported holding IDXX for 2026Q1, together 89% of the company, fewer than the 1,356 a quarter earlier.

1,276

Institutions reporting a position · as of 2026Q1 · down from 1,356 the quarter before

Shares held by institutions
71.0M

Shares held by institutions · 89% of the company · long US equity positions only, as reported on Form 13F

Reported value
$39.9B

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
33%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
52
New positions
110
Positions exited
196
Added to
385
Reduced
469
Top 10 holdersof the company
41%
Institutional ownership by quarter, 2013Q2 to 2026Q1
QuarterFilersSharesReported value
2026Q11,27671.0M$39.9B
2025Q41,35680.4M$51.6B
2025Q31,27471.7M$45.8B
2025Q21,21174.2M$39.8B
2025Q11,12373.9M$31.0B
2024Q41,10171.7M$29.7B
2024Q31,09873.1M$36.6B
2024Q21,09674.5M$36.3B
2024Q11,12872.3M$39.0B
2023Q41,13672.7M$40.3B
2023Q31,04573.7M$32.3B
2023Q21,04872.8M$36.6B
2023Q11,03872.7M$36.3B
2022Q498773.5M$30.2B
2022Q391773.5M$24.0B
2022Q294673.5M$25.8B
Largest reported holders, 2026Q1
HolderShares% of companyValue
VANGUARD GROUP INC9.9M12%$5.58B
BlackRock Inc.8.4M10%$4.70B
STATE STREET CORP3.7M4.6%$2.06B
GEODE CAPITAL MANAGEMENT LLC2.7M3.3%$1.50B
Invesco Ltd.1.7M2.1%$943M
BAMCO INC /NY/1.6M2.0%$918M
Bank of New York Mellon Corp1.5M1.9%$845M
Fundsmith LLP1.5M1.8%$824M
MORGAN STANLEY1.3M1.6%$739M
BLAIR WILLIAM & CO/IL0.9M1.2%$532M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

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