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Idexx Laboratories
IDXX

Overview Fund Activity

1,126 hedge funds and large institutions have $30.9B invested in Idexx Laboratories in 2025 Q1 according to their latest regulatory filings, with 124 funds opening new positions, 460 increasing their positions, 348 reducing their positions, and 90 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,126
Holders Change
+17
Holders Change %
+1.53%
% of All Funds
15.3%
Holding in Top 10
18
Holding in Top 10 Change
+6
Holding in Top 10 Change %
+50%
% of All Funds
0.24%
New
124
Increased
460
Reduced
348
Closed
90
Calls
$68.7M
Puts
$105M
Net Calls
-$36.1M
Net Calls Change
+$20.8M

Top Buyers

1
T. Rowe Price Associates
1
T. Rowe Price Associates
Maryland
$835M
2
Select Equity Group
2
Select Equity Group
New York
$195M
3
Principal Financial Group
3
Principal Financial Group
Iowa
$473M
4
DCP
4
Durable Capital Partners
Maryland
$153M
5
UBS AM
5
UBS AM
Illinois
$452M

Top Sellers

1
AllianceBernstein
1
AllianceBernstein
Tennessee
$76.4M
2
Alyeska Investment Group
2
Alyeska Investment Group
Illinois
$0
3
Franklin Resources
3
Franklin Resources
California
$233M
4
Assenagon Asset Management
4
Assenagon Asset Management
Luxembourg
$86.7M
5
Millennium Management
5
Millennium Management
New York
$16.6M
Name Holding Trade Value Shares
Change 		Shares
Change %
D.E. Shaw & Co
51
D.E. Shaw & Co
New York
$100M +$11M +26,098 +12%
Bank Julius Baer & Co
52
Bank Julius Baer & Co
Switzerland
$99M -$3.14M -6,875 -3%
Swiss National Bank
53
Swiss National Bank
Switzerland
$97M -$672K -1,600 -0.7%
CIP
54
Champlain Investment Partners
Vermont
$94.3M +$94.3M +224,605 New
ACM
55
American Capital Management
New York
$93.1M +$6.53M +15,544 +8%
Wellington Management Group
56
Wellington Management Group
Massachusetts
$92.2M +$10.2M +24,204 +12%
First Trust Advisors
57
First Trust Advisors
Illinois
$92M +$2.49M +5,921 +3%
Assenagon Asset Management
58
Assenagon Asset Management
Luxembourg
$86.7M -$96M -228,498 -53%
EIP
59
Epoch Investment Partners
New York
$84.4M +$12.5M +29,796 +17%
Sumitomo Mitsui Trust Group
60
Sumitomo Mitsui Trust Group
Japan
$83.7M +$395K +940 +0.5%
TCM
61
TimesSquare Capital Management
New York
$83M +$1.78M +4,230 +2%
Raymond James Financial
62
Raymond James Financial
Florida
$81.2M +$8.13M +19,366 +11%
Arrowstreet Capital
63
Arrowstreet Capital
Massachusetts
$80.2M +$20.5M +48,718 +34%
LIP
64
Liontrust Investment Partners
United Kingdom
$78.8M +$76.3M +181,682 +3,055%
RhumbLine Advisers
65
RhumbLine Advisers
Massachusetts
$76.9M +$3.03M +7,225 +4%
AllianceBernstein
66
AllianceBernstein
Tennessee
$76.4M -$444M -1,057,328 -85%
Russell Investments Group
67
Russell Investments Group
United Kingdom
$76.3M +$46.8M +111,524 +159%
Victory Capital Management
68
Victory Capital Management
Texas
$75.7M +$2.95M +7,034 +4%
AQR Capital Management
69
AQR Capital Management
Connecticut
$72.8M +$22M +53,106 +43%
Mitsubishi UFJ Asset Management
70
Mitsubishi UFJ Asset Management
Japan
$71.7M +$11.3M +26,821 +19%
WF
71
Welch & Forbes
Massachusetts
$71.3M +$221K +527 +0.3%
JAM
72
Jupiter Asset Management
United Kingdom
$70.9M +$11.7M +27,978 +20%
Caisse de Depot et Placement du Quebec (CDPQ)
73
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
$70.5M +$2.38M +5,664 +3%
RPI
74
Railway Pension Investments
United Kingdom
$69.3M -$7.22M -17,200 -9%
Envestnet Asset Management
75
Envestnet Asset Management
Illinois
$68M +$5.15M +12,255 +8%
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