IDXX
IDEXX Labs (IDXX)
NASDAQ
$554.99+$0.004 (+0.0007%)
Price as of Aug 28, 2026 7:30 PM EDT
  • $43.7B
    Market Cap
  • -14.23%
    1-Year Change
  • Diagnostics & Research
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD GROUP INC
12.61%
9.9M
-16,697 (-0.17%)
Dec 31, 2025
BLACKROCK INC.
12.17%
9.6M
+395,972 (+4.12%)
Jun 30, 2024
BLACKROCK FUNDING, INC. /DE
10.74%
8.5M
-942,652 (-11.13%)
Dec 31, 2024
BLACKROCK, INC.
10.36%
8.2M
-195,375 (-2.39%)
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
6.53%
5.2M
-30,294 (-0.59%)
Jun 30, 2026
FUNDSMITH EQUITY FUND, L.P.
5.61%
4.4M
+4.4M (+100.00%)
Jun 30, 2018
N/A
4.94%
3.9M
-14,342 (-0.37%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions1.4B (78.13%)
  • Mutual Funds391.1M (21.82%)
  • Insiders900,073 (0.05%)
  • Other0 (0.00%)

Insider Transactions

  • 0.05% (900,073)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 4
    Number of InsiderSelling (last 12 months)
  • $944.9M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Emerson Andrew
EVP, CFO and Treasurer
Exempt
Aug 20, 2026
$0.00
265
$0.00
925
Emerson Andrew
EVP, CFO and Treasurer
Exempt
Aug 20, 2026
$47,238.90
265
$178.26
4,507
Emerson Andrew
EVP, CFO and Treasurer
In Kind
Aug 20, 2026
$0.00
86
$0.00
4,421
HOOLEY JOSEPH L
Award
Jul 30, 2026
$27,381.20
49
$558.80
325
Underberg Sharon E.
EVP, GC & Corporate Secretary
Exempt
Mar 03, 2026
$0.00
197
$0.00
0
Hunt Nimrata
Executive Vice President
Sell
Mar 03, 2026
$1.1M
1,758
$634.57
18,141
Underberg Sharon E.
EVP, GC & Corporate Secretary
Exempt
Mar 03, 2026
$99,589.41
197
$505.53
7,138
MAZELSKY JAY
President and CEO
Exempt
Feb 27, 2026
$0.00
197
$0.00
0
MAZELSKY JAY
President and CEO
Exempt
Feb 27, 2026
$99,589.41
197
$505.53
83,803
Hunt Nimrata
Executive Vice President
Sell
Feb 26, 2026
$1.8M
2,693
$661.54
19,899
MAZELSKY JAY
President and CEO
Exempt
Feb 26, 2026
$0.00
23,326
$0.00
0
MAZELSKY JAY
President and CEO
Exempt
Feb 26, 2026
$3.3M
23,326
$141.60
106,932
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$833,507.63
1,281
$650.67
105,651
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$713,377.83
1,095
$651.49
104,556
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$1.1M
1,669
$652.49
102,887
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$765,454.95
1,171
$653.68
101,716
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$727,293.26
1,111
$654.63
100,605
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$975,904.50
1,488
$655.85
99,117
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$882,142.97
1,343
$656.85
97,774
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$1.9M
2,860
$657.84
94,914
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$2.4M
3,660
$658.92
91,254
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$1.9M
2,859
$659.75
88,395
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$793,317.12
1,200
$661.10
87,195
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$662,156.70
1,000
$662.16
86,195
MAZELSKY JAY
President and CEO
Sell
Feb 26, 2026
$1.7M
2,589
$663.04
83,606
Erickson Michael G
Executive Vice President
Exempt
Feb 19, 2026
$0.00
719
$0.00
0
Erickson Michael G
Executive Vice President
Exempt
Feb 19, 2026
$0.00
817
$0.00
0
Erickson Michael G
Executive Vice President
Exempt
Feb 19, 2026
$0.00
483
$0.00
0
Erickson Michael G
Executive Vice President
Exempt
Feb 19, 2026
$0.00
183
$0.00
0
Erickson Michael G
Executive Vice President
Exempt
Feb 19, 2026
$0.00
197
$0.00
0