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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 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
35
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 13 listed it in both
Shares listed
9,234,606
combined, among listed positions
Reported value
$5.2bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 23 buyers (opened or added shares) and 13 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,054,464.

Managers listing IDXX in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

35 of 35 holders

ActionFiling
Invesco Ltd3,349,677$1.9bn0.18%Added+53,50012 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP838,839$471m0.26%Added+288,47114 May 2026 (the filing on sec.gov)
Capital Research Global Investors781,345$439m0.07%Added+173,59113 May 2026 (the filing on sec.gov)
Wellington Management Group LLP735,475$413m0.08%Trimmed-43,73915 May 2026 (the filing on sec.gov)
Polen Capital Management LLC695,811$391m2.70%Trimmed-264,72614 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc638,063$359munder 0.1%Trimmed-314,16015 May 2026 (the filing on sec.gov)
Capital World Investors497,851$280munder 0.1%Newnew13 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC349,707$196m0.15%Added+74,91027 Oct 2026 (the filing on sec.gov)
Fidelity (FMR LLC)282,976$159munder 0.1%Added+31,56915 May 2026 (the filing on sec.gov)
Holocene Advisors LP147,732$83m0.20%Added+102,01115 May 2026 (the filing on sec.gov)
Point72 Asset Management LP129,284$73m0.09%Added+118,08015 May 2026 (the filing on sec.gov)
AllianceBernstein LP94,484$64munder 0.1%Trimmed-4,89815 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC100,309$56m0.07%Added+42,88515 May 2026 (the filing on sec.gov)
AQR Capital Management LLC96,726$54munder 0.1%Trimmed-18,04915 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP90,516$51m0.36%Newnew15 May 2026 (the filing on sec.gov)
Citadel Advisors LLC87,566$49munder 0.1%Added+69,72315 May 2026 (the filing on sec.gov)
Millennium Management LLC70,446$40munder 0.1%Added+66,97615 May 2026 (the filing on sec.gov)
Marshall Wace LLP49,295$28munder 0.1%Added+48,06815 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC48,504$27munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Man Group PLC34,525$19munder 0.1%Added+9,11315 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC33,998$19munder 0.1%Added+12,53813 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC15,003$8.4m0.06%Newnew15 May 2026 (the filing on sec.gov)
Jane Street Group LLC14,998$8.4munder 0.1%Added+5,98412 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP14,061$7.9munder 0.1%Trimmed-6,00315 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd10,790$6.1munder 0.1%Trimmed-1,74918 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, 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 (5)

Exited (1)

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 →