Walleye Trading
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Walleye Trading’s Mirion Technologies MIR Stock Holding History

Walleye Trading’s Portfolio MIR Stock Details MIR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$169K Sell
9,100
-100
-1% -$2.26K ﹤0.01% 3217
2025
Q4 		$215K Sell
9,200
-26,800
-74% -$668K ﹤0.01% 3352
2025
Q3 		$837K Sell
36,000
-113,600
-76% -$2.46M ﹤0.01% 2390
2025
Q2 		$3.22M Buy
+149,600
New +$2.58M 0.01% 1454
2025
Q1 		– Sell
-4,300
Closed -$75K – 4468
2024
Q4 		$75K Buy
+4,300
New +$66.7K ﹤0.01% 3669
2024
Q2 		– Sell
-19,200
Closed -$218K – 4681
2024
Q1 		$218K Sell
19,200
-39,800
-67% -$399K ﹤0.01% 3376
2023
Q4 		$605K Buy
59,000
+10,400
+21% +$87.8K ﹤0.01% 2910
2023
Q3 		$363K Buy
+48,600
New +$383K ﹤0.01% 3218
2021
Q4 		– Sell
-54,500
Closed -$557K – 5658
2021
Q3 		$557K Buy
54,500
+29,500
+118% +$298K ﹤0.01% 2801
2021
Q2 		$260K Buy
+25,000
New +$257K ﹤0.01% 3654

Other funds holding MIR

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
CLG
Cooperman Leon G $3.05B AUM 42.78% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Walleye Trading's MIR Position: Q4 2025 in Review

Walleye Trading sold out of Mirion Technologies (MIR) in Q4 2025, closing a stake of 2,463 shares — an estimated $61.4K sold.

Walleye Trading first reported a position in MIR in Q3 2020 and held it in 10 quarters. The position peaked at $6.22M in Q2 2021. 365 funds tracked by Wall St. Rank hold MIR as of Q4 2025.

  • Walleye Trading reported no remaining Mirion Technologies position as of Q4 2025 after selling out during the quarter.
  • Walleye Trading sold 2,463 Mirion Technologies shares in Q4 2025, an estimated $61.4K.
  • Walleye Trading first reported a position in Mirion Technologies in Q3 2020 and held it in 10 quarters.
  • Walleye Trading's Mirion Technologies position peaked at $6.22M in Q2 2021.
  • 365 funds tracked by Wall St. Rank held Mirion Technologies as of Q4 2025.

Based on Walleye Trading's 13F filing for Q4 2025, filed 13 Feb 2026.