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Idexx Laboratories

1,316 hedge funds and large institutions have $41.2B invested in Idexx Laboratories in 2026 Q1 according to their latest regulatory filings, with 124 funds opening new positions, 433 increasing their positions, 518 reducing their positions, and 173 closing their positions.

New
Increased
Maintained
Reduced
Closed

48% more call options, than puts

Call options by funds: $77.4M | Put options by funds: $52.2M

5% less funds holding

Funds holding: 1,3861,316 (-70)

11.36% less ownership

Funds ownership: 103.47%92.11% (-11%)

16% less repeat investments, than reductions

Existing positions increased: 433 | Existing positions reduced: 518

22% less capital invested

Capital invested by funds: $53B → $41.2B (-$11.9B)

28% less first-time investments, than exits

New positions opened: 124 | Existing positions closed: 173

36% less funds holding in top 10

Funds holding in top 10: 2516 (-9)

Holders
1,316
Holders Change
-70
Holders Change %
-5.05%
% of All Funds
16.1%
Holding in Top 10
16
Holding in Top 10 Change
-9
Holding in Top 10 Change %
-36%
% of All Funds
0.2%
New
124
Increased
433
Reduced
518
Closed
173
Calls
$77.4M
Puts
$52.2M
Net Calls
+$25.2M
Net Calls Change
+$7.38M
Name Holding Trade Value Shares
Change
Change in
Stake
BlackRock
1
BlackRock
New York
$4.7B -$109M -169,333 -2%
Vanguard Capital Management
2
Vanguard Capital Management
Pennsylvania
$2.91B +$3.32B +5,182,507 New
Vanguard Portfolio Management
3
Vanguard Portfolio Management
Pennsylvania
$2.2B +$2.51B +3,910,863 New
State Street
4
State Street
Massachusetts
$2.06B +$11.3M +17,559 +0.5%
Invesco
5
Invesco
Georgia
$1.88B +$34.3M +53,500 +2%
Geode Capital Management
6
Geode Capital Management
Massachusetts
$1.5B +$49.4M +77,060 +3%
BAMCO Inc
7
BAMCO Inc
New York
$918M -$106M -164,674 -9%
Bank of New York Mellon
8
Bank of New York Mellon
New York
$845M -$76.9M -119,937 -7%
Fundsmith LLP
9
Fundsmith LLP
United Kingdom
$824M -$263M -410,249 -22%
Morgan Stanley
10
Morgan Stanley
New York
$739M -$152M -237,777 -15%
William Blair & Company
11
William Blair & Company
Illinois
$532M -$35.3M -55,039 -5%
Northern Trust
12
Northern Trust
Illinois
$512M -$7.22M -11,259 -1%
Principal Financial Group
13
Principal Financial Group
Iowa
$495M -$56.3M -87,757 -9%
UBS AM
14
UBS AM
Illinois
$490M +$7.63M +11,902 +1%
Arrowstreet Capital
15
Arrowstreet Capital
Massachusetts
$471M +$185M +288,471 +52%
Capital Research Global Investors
16
Capital Research Global Investors
California
$439M +$111M +173,591 +29%
JP Morgan Chase
17
JP Morgan Chase
New York
$434M +$68.4M +106,654 +16%
Wellington Management Group
18
Wellington Management Group
Massachusetts
$413M -$28M -43,739 -6%
Goldman Sachs
19
Goldman Sachs
New York
$403M -$73.9M -115,268 -14%
Polen Capital Management
20
Polen Capital Management
Florida
$391M -$170M -264,726 -28%
Franklin Resources
21
Franklin Resources
California
$372M +$22.7M +35,474 +6%
Legal & General Group
22
Legal & General Group
United Kingdom
$366M -$12.7M -19,811 -3%
T. Rowe Price Associates
23
T. Rowe Price Associates
Maryland
$359M -$201M -314,160 -33%
Amundi
24
Amundi
France
$343M -$5.11M -7,964 -1%
Charles Schwab
25
Charles Schwab
California
$343M +$12.9M +20,155 +3%

IDXX Hedge Fund Activity: Q1 2026 in Review

1,316 of the 8,172 institutional investors tracked by Wall St. Rank reported a position in Idexx Laboratories (IDXX) for Q1 2026, worth a combined $41.2B — down 22% from $53B a quarter earlier.

Sellers outnumbered buyers: 173 funds closed out of IDXX and 124 opened new positions — a net loss of 49 holders — while 518 trimmed existing stakes and 433 added.

The largest buyer was Capital World Investors, opening a new position worth an estimated $319M. The largest seller was Elyxium Wealth, cutting an estimated $3.47B.

  • 1,316 institutional investors held Idexx Laboratories (IDXX) as of Q1 2026, down from 1,386 in Q4 2025.
  • Funds reported $41.2B of Idexx Laboratories stock for Q1 2026, down 22% quarter-over-quarter.
  • 124 funds opened new Idexx Laboratories positions in Q1 2026 and 173 closed out, a net change of -49 holders.
  • The largest Idexx Laboratories buyer in Q1 2026 was Capital World Investors, an estimated $319M added.
  • The largest Idexx Laboratories seller in Q1 2026 was Elyxium Wealth, an estimated $3.47B sold.

Based on aggregated 13F filings for Q1 2026.