Rafferty Asset Management
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Rafferty Asset Management’s Idexx Laboratories IDXX Stock Holding History

Rafferty Asset Management’s Portfolio IDXX Stock Details IDXX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$14.6M Sell
25,899
-213
-0.8% -$137K 0.06% 183
2025
Q4 		$17.7M Sell
26,112
-1,429
-5% -$973K 0.06% 172
2025
Q3 		$17.6M Sell
27,541
-3,443
-11% -$2.09M 0.06% 179
2025
Q2 		$16.6M Sell
30,984
-6,760
-18% -$3.23M 0.05% 176
2025
Q1 		$15.9M Sell
37,744
-3,156
-8% -$1.37M 0.07% 179
2024
Q4 		$16.9M Buy
40,900
+8,870
+28% +$3.89M 0.06% 177
2024
Q3 		$16.2M Sell
32,030
-2,700
-8% -$1.31M 0.06% 185
2024
Q2 		$16.9M Buy
34,730
+1,950
+6% +$979K 0.06% 174
2024
Q1 		$17.7M Buy
32,780
+3,423
+12% +$1.87M 0.07% 165
2023
Q4 		$16.3M Buy
29,357
+1,215
+4% +$570K 0.07% 166
2023
Q3 		$12.3M Buy
28,142
+4,702
+20% +$2.34M 0.07% 172
2023
Q2 		$11.8M Buy
23,440
+4,083
+21% +$1.96M 0.07% 177
2023
Q1 		$9.68M Buy
19,357
+1,317
+7% +$630K 0.07% 191
2022
Q4 		$7.36M Sell
18,040
-6,062
-25% -$2.35M 0.06% 287
2022
Q3 		$7.85M Buy
24,102
+2,388
+11% +$877K 0.08% 183
2022
Q2 		$7.62M Buy
21,714
+5,999
+38% +$2.45M 0.07% 188
2022
Q1 		$8.6M Buy
15,715
+6,185
+65% +$3.25M 0.05% 220
2021
Q4 		$6.28M Buy
9,530
+452
+5% +$284K 0.03% 288
2021
Q3 		$5.65M Buy
9,078
+905
+11% +$608K 0.04% 278
2021
Q2 		$5.16M Sell
8,173
-1,069
-12% -$590K 0.03% 306
2021
Q1 		$4.52M Sell
9,242
-223
-2% -$112K 0.03% 302
2020
Q4 		$4.73M Sell
9,465
-155
-2% -$69.4K 0.05% 223
2020
Q3 		$3.78M Sell
9,620
-1,451
-13% -$536K 0.05% 231
2020
Q2 		$3.65M Sell
11,071
-12,606
-53% -$3.65M 0.05% 226
2020
Q1 		$5.74M Buy
23,677
+12,209
+106% +$3.19M 0.24% 54
2019
Q4 		$3M Buy
11,468
+2,216
+24% +$584K 0.05% 220
2019
Q3 		$2.52M Buy
9,252
+884
+11% +$246K 0.04% 274
2019
Q2 		$2.3M Sell
8,368
-3,660
-30% -$902K 0.04% 346
2019
Q1 		$2.69M Buy
12,028
+3,910
+48% +$807K 0.04% 263
2018
Q4 		$1.51M Sell
8,118
-3,428
-30% -$703K 0.03% 325
2018
Q3 		$2.88M Buy
11,546
+4,068
+54% +$987K 0.04% 200
2018
Q2 		$1.63M Sell
7,478
-4,603
-38% -$948K 0.02% 387
2018
Q1 		$2.31M Buy
12,081
+2,676
+28% +$494K 0.03% 255
2017
Q4 		$1.47M Sell
9,405
-5,254
-36% -$827K 0.03% 332
2017
Q3 		$2.28M Buy
14,659
+5,762
+65% +$911K 0.05% 205
2017
Q2 		$1.44M Buy
8,897
+1,330
+18% +$216K 0.04% 279
2017
Q1 		$1.17M Buy
+7,567
New +$1.04M 0.03% 287
2016
Q4 		– Sell
-5,560
Closed -$627K – 489
2016
Q3 		$627K Buy
+5,560
New +$586K 0.02% 305
2016
Q2 		– Sell
-22,662
Closed -$1.77M – 533
2016
Q1 		$1.77M Buy
+22,662
New +$1.63M 0.1% 153
2015
Q4 		– Sell
-18,925
Closed -$1.41M – 557
2015
Q3 		$1.41M Buy
+18,925
New +$1.36M 0.11% 172
2014
Q2 		– Sell
-3,686
Closed -$224K – 364
2014
Q1 		$224K Buy
+3,686
New +$220K 0.05% 238

Other funds holding IDXX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return
Fundsmith LLP
Fundsmith LLP London, United Kingdom $12.8B AUM 6.9% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Rafferty Asset Management's IDXX Position: Q1 2026 in Review

Rafferty Asset Management reduced its Idexx Laboratories (IDXX) stake by 0.82% in Q1 2026, selling an estimated $137K and leaving 25,899 shares worth $14.6M. The position accounts for 0.06% of the portfolio, ranked #183.

Rafferty Asset Management first reported a position in IDXX in Q1 2014 and has held it in 41 quarters since. The position peaked at $17.7M in Q1 2024. 1,311 funds tracked by Wall St. Rank hold IDXX as of Q1 2026.

  • Rafferty Asset Management held 25,899 shares of Idexx Laboratories worth $14.6M as of Q1 2026.
  • Rafferty Asset Management sold 213 Idexx Laboratories shares in Q1 2026, an estimated $137K.
  • Idexx Laboratories made up 0.06% of Rafferty Asset Management's portfolio in Q1 2026, its #183 holding.
  • Rafferty Asset Management first reported a position in Idexx Laboratories in Q1 2014 and has held it in 41 quarters since.
  • Rafferty Asset Management's Idexx Laboratories position peaked at $17.7M in Q1 2024.
  • 1,311 funds tracked by Wall St. Rank held Idexx Laboratories as of Q1 2026.

Based on Rafferty Asset Management's 13F filing for Q1 2026, filed 15 May 2026.