MF
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Magnetar Financial’s Idexx Laboratories IDXX Stock Holding History

Magnetar Financial’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 		$920K Buy
1,652
+100
+6% +$64.1K 0.01% 496
2025
Q4 		$1.05M Buy
+1,552
New +$1.06M 0.01% 429
2024
Q3 		– Sell
-3,338
Closed -$1.63M – 604
2024
Q2 		$1.63M Sell
3,338
-1,417
-30% -$711K 0.03% 227
2024
Q1 		$2.57M Buy
+4,755
New +$2.6M 0.06% 189
2023
Q4 		– Sell
-4,745
Closed -$2.07M – 452
2023
Q3 		$2.07M Buy
+4,745
New +$2.37M 0.05% 183
2021
Q4 		– Sell
-1,097
Closed -$682K – 1451
2021
Q3 		$682K Buy
+1,097
New +$737K 0.01% 825
2020
Q4 		– Sell
-2,653
Closed -$1.04M – 805
2020
Q3 		$1.04M Buy
+2,653
New +$981K 0.02% 340
2018
Q4 		– Sell
-3,183
Closed -$795K – 398
2018
Q3 		$795K Buy
+3,183
New +$773K 0.01% 141
2017
Q4 		– Sell
-1,861
Closed -$289K – 791
2017
Q3 		$289K Sell
1,861
-13,479
-88% -$2.13M 0.01% 538
2017
Q2 		$2.48M Buy
+15,340
New +$2.49M 0.04% 211
2016
Q4 		– Sell
-4,536
Closed -$511K – 195
2016
Q3 		$511K Sell
4,536
-1,024
-18% -$108K 0.01% 366
2016
Q2 		$516K Buy
5,560
+312
+6% +$26.8K 0.01% 225
2016
Q1 		$411K Sell
5,248
-829
-14% -$59.7K 0.01% 220
2015
Q4 		$443K Sell
6,077
-172
-3% -$12.3K 0.01% 162
2015
Q3 		$464K Sell
6,249
-791
-11% -$56.7K 0.01% 223
2015
Q2 		$452K Buy
+7,040
New +$487K 0.01% 279

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

Magnetar Financial's IDXX Position: Q1 2026 in Review

Magnetar Financial increased its Idexx Laboratories (IDXX) stake by 6.4% in Q1 2026, buying an estimated $64.1K and bringing the position to 1,652 shares worth $920K. The position accounts for 0.01% of the portfolio, ranked #496.

Magnetar Financial first reported a position in IDXX in Q2 2015 and has held it in 16 quarters since. The position peaked at $2.57M in Q1 2024. 1,311 funds tracked by Wall St. Rank hold IDXX as of Q1 2026.

  • Magnetar Financial held 1,652 shares of Idexx Laboratories worth $920K as of Q1 2026.
  • Magnetar Financial bought 100 Idexx Laboratories shares in Q1 2026, an estimated $64.1K.
  • Idexx Laboratories made up 0.01% of Magnetar Financial's portfolio in Q1 2026, its #496 holding.
  • Magnetar Financial first reported a position in Idexx Laboratories in Q2 2015 and has held it in 16 quarters since.
  • Magnetar Financial's Idexx Laboratories position peaked at $2.57M in Q1 2024.
  • 1,311 funds tracked by Wall St. Rank held Idexx Laboratories as of Q1 2026.

Based on Magnetar Financial's 13F filing for Q1 2026, filed 13 May 2026.