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Rational Advisors’s Idexx Laboratories IDXX Stock Holding History

Rational Advisors’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
Q2 		$15.3K Buy
29
+1
+4% +$561 ﹤0.01% 174
2026
Q1 		$15.7K Hold
28
– – ﹤0.01% 156
2025
Q4 		$18.9K Buy
28
+4
+17% +$2.72K ﹤0.01% 158
2025
Q3 		$15.3K Sell
24
-12
-33% -$7.28K ﹤0.01% 171
2025
Q2 		$19.3K Buy
+36
New +$17.2K ﹤0.01% 168
2020
Q4 		– Sell
-3
Closed -$1K – 395
2020
Q3 		$1K Buy
+3
New +$1.11K ﹤0.01% 532
2020
Q2 		– Sell
-3,055
Closed -$740K – 523
2020
Q1 		$740K Sell
3,055
-76
-2% -$19.8K 0.54% 55
2019
Q4 		$818K Buy
3,131
+1,661
+113% +$438K 0.38% 69
2019
Q3 		$400K Buy
+1,470
New +$409K 0.15% 157
2019
Q2 		– Sell
-9,375
Closed -$2.1M – 568
2019
Q1 		$2.1M Buy
+9,375
New +$1.94M 0.57% 63
2018
Q4 		– Sell
-6,500
Closed -$1.62M – 544
2018
Q3 		$1.62M Sell
6,500
-600
-8% -$146K 0.39% 66
2018
Q2 		$1.55M Buy
7,100
+2,500
+54% +$515K 0.73% 49
2018
Q1 		$880K Hold
4,600
– – 0.42% 91
2017
Q4 		$719K Hold
4,600
– – 0.37% 111
2017
Q3 		$715K Hold
4,600
– – 0.38% 84
2017
Q2 		$743K Buy
+4,600
New +$747K 0.46% 80
2015
Q3 		$70K Hold
948
– – 0.03% 238
2015
Q2 		$61K Hold
948
– – 0.02% 246
2015
Q1 		$73K Sell
948
-632
-40% -$49.2K 0.02% 241
2014
Q4 		$117K Buy
+1,580
New +$111K 0.02% 253
2013
Q4 		$277K Buy
5,206
+2,024
+64% +$107K 0.02% 439
2013
Q3 		$159K Sell
3,182
-40
-1% -$1.92K 0.01% 548
2013
Q2 		$144K Buy
+3,222
New +$141K 0.01% 552

Other funds holding IDXX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

Rational Advisors's IDXX Position: Q2 2026 in Review

Rational Advisors increased its Idexx Laboratories (IDXX) stake by 3.6% in Q2 2026, buying an estimated $561 and bringing the position to 29 shares worth $15.3K. The position accounts for ﹤0.01% of the portfolio, ranked #174.

Rational Advisors first reported a position in IDXX in Q2 2013 and has held it in 23 quarters since. The position peaked at $2.1M in Q1 2019. 1,295 funds tracked by Wall St. Rank hold IDXX as of Q2 2026.

  • Rational Advisors held 29 shares of Idexx Laboratories worth $15.3K as of Q2 2026.
  • Rational Advisors bought 1 Idexx Laboratories share in Q2 2026, an estimated $561.
  • Idexx Laboratories made up ﹤0.01% of Rational Advisors's portfolio in Q2 2026, its #174 holding.
  • Rational Advisors first reported a position in Idexx Laboratories in Q2 2013 and has held it in 23 quarters since.
  • Rational Advisors's Idexx Laboratories position peaked at $2.1M in Q1 2019.
  • 1,295 funds tracked by Wall St. Rank held Idexx Laboratories as of Q2 2026.

Based on Rational Advisors's 13F filing for Q2 2026, filed 24 Jul 2026.