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IDXX in the 13F filings

Idexx Labs Inc · CUSIP 45168D104

Sector · Pharmaceuticals and biotechnologyTheme · Healthcare: biopharma and medtech· L3VLUP-defined
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 10 Feb 2026
Managers listing it
31
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 9 listed it in both
Shares listed
8,180,142
combined, among listed positions
Reported value
$5.5bn
combined, at the quarter end

Among the 92 comparable managers: 17 buyers (opened or added shares) and 17 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,994,743.

Managers listing IDXX in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

31 of 31 holders

ActionFiling
Invesco Ltd3,296,177$2.2bn0.21%Added+1,975,91419 Feb 2026 (the filing on sec.gov)
Polen Capital Management LLC960,537$650m2.77%Trimmed-166,61012 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc952,223$644m0.07%Added+258,01517 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP779,214$527m0.09%Added+592,83417 Feb 2026 (the filing on sec.gov)
Capital Research Global Investors607,754$411m0.08%Trimmed-82,84711 Feb 2026 (the filing on sec.gov)
Arrowstreet Capital LP550,368$372m0.22%Added+365,27413 Feb 2026 (the filing on sec.gov)
Neuberger Berman Group LLC274,797$186m0.14%Added+65327 Oct 2026 (the filing on sec.gov)
Fidelity (FMR LLC)251,407$170munder 0.1%Added+18,36117 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC114,775$78munder 0.1%Trimmed-20,37917 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP99,382$67munder 0.1%Added+27117 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC57,424$39munder 0.1%Added+55,29013 Feb 2026 (the filing on sec.gov)
Holocene Advisors LP45,721$31m0.06%Newnew17 Feb 2026 (the filing on sec.gov)
Man Group PLC25,412$17munder 0.1%Added+2,86617 Feb 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP22,386$15m0.12%Newnew17 Feb 2026 (the filing on sec.gov)
Acadian Asset Management LLC21,460$15munder 0.1%Added+20,09410 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP20,064$14munder 0.1%Trimmed-2,45717 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC17,843$12munder 0.1%Trimmed-9,73317 Feb 2026 (the filing on sec.gov)
Woodline Partners LP13,627$9.2munder 0.1%Added+3,05317 Feb 2026 (the filing on sec.gov)
Walleye Capital LLC13,431$9.1munder 0.1%Added+13,15213 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd12,539$8.5munder 0.1%Trimmed-3317 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP11,204$7.6munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC9,014$6.1munder 0.1%Trimmed-23,78112 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP6,941$4.7munder 0.1%Trimmed-2,75917 Feb 2026 (the filing on sec.gov)
Bridgewater Associates LP6,158$4.2munder 0.1%Trimmed-1,24613 Feb 2026 (the filing on sec.gov)
Millennium Management LLC3,470$2.3munder 0.1%Trimmed-60,04917 Feb 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (3)

Exited (4)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
17 in Q3 2024 to 22 in Q2 2026

Tracked managers listing it, at least.

01020302014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
IDXX by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20136$1.5bnn.a.n.a.
Q3 20135$1.6bnn.a.n.a.
Q4 20136$1.7bnn.a.n.a.
Q1 20148$1.9bnn.a.n.a.
Q2 20147$2.1bnn.a.n.a.
Q3 201411$1.6bnn.a.n.a.
Q4 201412$1.8bnn.a.n.a.
Q1 201510$1.7bnn.a.n.a.
Q2 201512$1.4bnn.a.n.a.
Q3 201513$1.6bnn.a.n.a.
Q4 20157$1.5bnn.a.n.a.
Q1 20169$1.3bnn.a.n.a.
Q2 201611$886mn.a.n.a.
Q3 201612$1.1bnn.a.n.a.
Q4 201611$943mn.a.n.a.
Q1 201714$1.8bnn.a.n.a.
Q2 201720$1.8bnn.a.n.a.
Q3 201722$1.8bnn.a.n.a.
Q4 201719$1.7bnn.a.n.a.
Q1 201820$2.1bnn.a.n.a.
Q2 201822$2.5bnn.a.n.a.
Q3 201817$2.5bnn.a.n.a.
Q4 201822$1.9bnn.a.n.a.
Q1 201919$2.1bnn.a.n.a.
Q2 201920$2.7bnn.a.n.a.
Q3 201915$2.5bnn.a.n.a.
Q4 201916$2.3bnn.a.n.a.
Q1 202019$2.3bnn.a.n.a.
Q2 202018$3.1bnn.a.n.a.
Q3 202018$2.9bnn.a.n.a.
Q4 202015$3.5bnn.a.n.a.
Q1 202122$3.5bnn.a.n.a.
Q2 202118$4.5bnn.a.n.a.
Q3 202120$4.6bnn.a.n.a.
Q4 202117$4.9bnn.a.n.a.
Q1 202218$4.7bnn.a.n.a.
Q2 202220$3.5bnn.a.n.a.
Q3 202217$2.7bnn.a.n.a.
Q4 202213$3.5bnn.a.n.a.
Q1 202318$4.2bnn.a.n.a.
Q2 202316$3.7bnn.a.n.a.
Q3 202315$3.2bnn.a.n.a.
Q4 202316$4.1bn127
Q1 202417$3.7bn127
Q2 202413$3.7bn86
Q3 202417$3.8bn116
Q4 202422$2.6bn156
Q1 202517$2.4bn126
Q2 202511$2.5bn76
Q3 202510$2.8bn64
Q4 202514$5.1bn1717
Q1 202616$4.7bn2313
Q2 202622$4.9bn2616

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

IDXX and LLY →IDXX and JNJ →IDXX and VRTX →Choose a stock to compare with IDXX →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own IDXX, latest filings →Back to the 13F Explorer →