Arrowstreet Capital
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Arrowstreet Capital’s Mirion Technologies MIR Stock Holding History

Arrowstreet Capital’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 		– Sell
-1,071,340
Closed -$25.1M – 2005
2025
Q4 		$25.1M Sell
1,071,340
-930,518
-46% -$23.2M 0.01% 673
2025
Q3 		$46.6M Sell
2,001,858
-279,322
-12% -$6.04M 0.03% 472
2025
Q2 		$49.1M Sell
2,281,180
-508,329
-18% -$8.76M 0.03% 426
2025
Q1 		$40.4M Sell
2,789,509
-1,425,412
-34% -$22.4M 0.03% 411
2024
Q4 		$73.6M Buy
4,214,921
+4,200,894
+29,949% +$65.2M 0.06% 285
2024
Q3 		$155K Buy
+14,027
New +$148K ﹤0.01% 1666
2024
Q2 		– Sell
-736,950
Closed -$8.38M – 1679
2024
Q1 		$8.38M Buy
+736,950
New +$7.38M 0.01% 736
2023
Q4 		– Sell
-178,575
Closed -$1.33M – 1503
2023
Q3 		$1.33M Sell
178,575
-518,391
-74% -$4.08M ﹤0.01% 925
2023
Q2 		$5.89M Buy
696,966
+164,701
+31% +$1.34M 0.01% 603
2023
Q1 		$4.55M Buy
+532,265
New +$4.22M 0.01% 723
2021
Q2 		– Sell
-235,717
Closed -$2.46M – 2092
2021
Q1 		$2.46M Buy
+235,717
New +$2.77M ﹤0.01% 1486

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

Arrowstreet Capital's MIR Position: Q1 2026 in Review

Arrowstreet Capital sold out of Mirion Technologies (MIR) in Q1 2026, closing a stake of 1,071,340 shares — an estimated $25.1M sold.

Arrowstreet Capital first reported a position in MIR in Q1 2021 and held it in 11 quarters. The position peaked at $73.6M in Q4 2024. 360 funds tracked by Wall St. Rank hold MIR as of Q1 2026.

  • Arrowstreet Capital reported no remaining Mirion Technologies position as of Q1 2026 after selling out during the quarter.
  • Arrowstreet Capital sold 1,071,340 Mirion Technologies shares in Q1 2026, an estimated $25.1M.
  • Arrowstreet Capital first reported a position in Mirion Technologies in Q1 2021 and held it in 11 quarters.
  • Arrowstreet Capital's Mirion Technologies position peaked at $73.6M in Q4 2024.
  • 360 funds tracked by Wall St. Rank held Mirion Technologies as of Q1 2026.

Based on Arrowstreet Capital's 13F filing for Q1 2026, filed 14 May 2026.