William Blair Investment Management, LLC Idexx Laboratories Inc Transaction History

William Blair Investment Management, LLC

  • $35.8 Billion
  • Q3 2025

A detailed history of William Blair Investment Management, LLC transactions in Idexx Laboratories Inc stock. As of the latest transaction made, William Blair Investment Management, LLC holds 459,019 shares of IDXX stock, worth $317 Million. This represents 0.82% of its overall portfolio holdings.

Number of Shares
459,019
Previous 685,088 33.0%
Holding current value
$317 Million
Previous $367 Million 20.19%
% of portfolio
0.82%
Previous 1.06%

Shares

33 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Nov 12, 2025
SELL
$514.61 - $682.78 $116 Million - $154 Million
-226,069 Reduced 33.0%
459,019 $293 Million
Q2 2025

Jul 29, 2025
BUY
$361.04 - $536.34 $17.3 Million - $25.7 Million
47,977 Added 7.53%
685,088 $367 Million
Q1 2025

May 09, 2025
BUY
$406.29 - $469.04 $87.3 Million - $101 Million
214,978 Added 50.93%
637,111 $268 Million
Q4 2024

Feb 10, 2025
BUY
$406.92 - $495.42 $150 Million - $183 Million
369,471 Added 701.59%
422,133 $175 Million
Q3 2024

Nov 08, 2024
SELL
$455.08 - $517.19 $6.58 Million - $7.48 Million
-14,459 Reduced 21.54%
52,662 $26.6 Million
Q2 2024

Aug 08, 2024
SELL
$468.04 - $548.53 $892,552 - $1.05 Million
-1,907 Reduced 2.76%
67,121 $32.7 Million
Q1 2024

May 08, 2024
BUY
$515.08 - $576.87 $360,040 - $403,232
699 Added 1.02%
69,028 $37.3 Million
Q4 2023

Feb 09, 2024
BUY
$391.37 - $557.56 $467,295 - $665,726
1,194 Added 1.78%
68,329 $37.9 Million
Q3 2023

Nov 09, 2023
SELL
$432.42 - $556.67 $3.42 Million - $4.4 Million
-7,906 Reduced 10.54%
67,135 $29.4 Million
Q2 2023

Aug 10, 2023
SELL
$450.7 - $503.61 $125,745 - $140,507
-279 Reduced 0.37%
75,041 $37.7 Million
Q1 2023

May 12, 2023
SELL
$406.01 - $514.59 $965,897 - $1.22 Million
-2,379 Reduced 3.06%
75,320 $37.7 Million
Q4 2022

Feb 09, 2023
SELL
$324.64 - $441.27 $9.72 Million - $13.2 Million
-29,947 Reduced 27.82%
77,699 $31.7 Million
Q3 2022

Nov 09, 2022
SELL
$325.8 - $407.78 $963,064 - $1.21 Million
-2,956 Reduced 2.67%
107,646 $35.1 Million
Q2 2022

Aug 10, 2022
SELL
$327.37 - $553.44 $1.91 Million - $3.22 Million
-5,827 Reduced 5.0%
110,602 $38.8 Million
Q1 2022

May 11, 2022
SELL
$466.52 - $631.01 $3.53 Million - $4.77 Million
-7,559 Reduced 6.1%
116,429 $63.7 Million
Q4 2021

Feb 14, 2022
BUY
$586.54 - $666.48 $1.29 Million - $1.47 Million
2,201 Added 1.81%
123,988 $81.6 Million
Q3 2021

Nov 10, 2021
SELL
$621.9 - $705.76 $867,550 - $984,535
-1,395 Reduced 1.13%
121,787 $75.7 Million
Q2 2021

Aug 12, 2021
BUY
$486.36 - $637.08 $13.6 Million - $17.8 Million
27,944 Added 29.34%
123,182 $77.8 Million
Q1 2021

May 13, 2021
SELL
$465.18 - $551.79 $6.61 Million - $7.84 Million
-14,203 Reduced 12.98%
95,238 $46.6 Million
Q4 2020

Feb 09, 2021
SELL
$383.85 - $499.87 $7.5 Million - $9.77 Million
-19,543 Reduced 15.15%
109,441 $54.7 Million
Q3 2020

Nov 06, 2020
SELL
$334.54 - $406.31 $5.09 Million - $6.18 Million
-15,201 Reduced 10.54%
128,984 $50.7 Million
Q2 2020

Aug 12, 2020
SELL
$230.66 - $330.16 $5.24 Million - $7.5 Million
-22,715 Reduced 13.61%
144,185 $47.6 Million
Q1 2020

May 08, 2020
BUY
$182.94 - $290.97 $9.47 Million - $15.1 Million
51,778 Added 44.98%
166,900 $40.4 Million
Q4 2019

Feb 12, 2020
SELL
$248.66 - $285.01 $10.6 Million - $12.2 Million
-42,745 Reduced 27.08%
115,122 $30.1 Million
Q3 2019

Nov 12, 2019
SELL
$260.07 - $289.93 $6.64 Million - $7.41 Million
-25,544 Reduced 13.93%
157,867 $42.9 Million
Q2 2019

Aug 09, 2019
BUY
$215.53 - $275.33 $13.2 Million - $16.8 Million
61,078 Added 49.93%
183,411 $50.5 Million
Q1 2019

May 10, 2019
BUY
$178.02 - $225.69 $12.4 Million - $15.7 Million
69,588 Added 131.93%
122,333 $27.4 Million
Q4 2018

Feb 13, 2019
SELL
$176.18 - $248.92 $17.1 Million - $24.2 Million
-97,236 Reduced 64.83%
52,745 $9.81 Million
Q3 2018

Nov 13, 2018
BUY
$218.82 - $254.46 $103,939 - $120,868
475 Added 0.32%
149,981 $37.4 Million
Q2 2018

Aug 14, 2018
SELL
$185.56 - $227.9 $22.8 Million - $28 Million
-122,779 Reduced 45.09%
149,506 $32.6 Million
Q1 2018

May 14, 2018
SELL
$157.81 - $204.73 $72 Million - $93.4 Million
-456,440 Reduced 62.64%
272,285 $52.1 Million
Q4 2017

Feb 14, 2018
BUY
$147.68 - $168.37 $73.9 Million - $84.2 Million
500,359 Added 219.1%
728,725 $114 Million
Q3 2017

Nov 13, 2017
BUY
$150.32 - $166.46 $34.3 Million - $38 Million
228,366
228,366 $35.5 Million

Others Institutions Holding IDXX

# of Institutions
1,452
Shares Held
73.6M
Call Options Held
249K
Put Options Held
199K
View Full List

About IDEXX LABORATORIES INC

IDXX Quotes by TradingView
  • Ticker IDXX
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Diagnostics & Research
  • Shares Outstandng 83,253,696
  • Market Cap $57.4B
  • Description
  • IDEXX Laboratories, Inc. develops, manufactures, and distributes products and services primarily for the companion animal veterinary, livestock and poultry, dairy, and water testing markets worldwide. The company operates through CAG; Water Quality Products; LPD; and Other segments. It provides point-of-care veterinary diagnostic products, inclu...
More about IDXX
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