Marshall Wace
MIR icon

Marshall Wace’s Mirion Technologies MIR Stock Holding History

Marshall Wace’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
2025
Q1 		– Sell
-239,439
Closed -$4.18M – 2905
2024
Q4 		$4.18M Buy
239,439
+177,643
+287% +$2.76M 0.01% 1140
2024
Q3 		$684K Buy
+61,796
New +$650K ﹤0.01% 1814
2024
Q2 		– Sell
-53,610
Closed -$610K – 2792
2024
Q1 		$610K Buy
53,610
+23,949
+81% +$240K ﹤0.01% 1859
2023
Q4 		$304K Buy
+29,661
New +$250K ﹤0.01% 1890
2021
Q4 		– Sell
-153,727
Closed -$1.57M – 4135
2021
Q3 		$1.57M Sell
153,727
-46,497
-23% -$469K 0.01% 1715
2021
Q2 		$2.08M Buy
200,224
+99,926
+100% +$1.03M 0.01% 1390
2021
Q1 		$1.05M Sell
100,298
-99,678
-50% -$1.17M ﹤0.01% 1630
2020
Q4 		$2.18M Buy
+199,976
New +$2.06M 0.01% 918

Other funds holding MIR

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return
MC
Maverick Capital Dallas, Texas $11.3B AUM 76.6% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
CLG
Cooperman Leon G $3.55B AUM 41.85% 1-Year Est. Return
Brown Advisory
Brown Advisory Baltimore, Maryland $64.6B AUM 18.98% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Marshall Wace's MIR Position: Q1 2025 in Review

Marshall Wace sold out of Mirion Technologies (MIR) in Q1 2025, closing a stake of 239,439 shares — an estimated $4.18M sold.

Marshall Wace first reported a position in MIR in Q4 2020 and held it in 8 quarters. The position peaked at $4.18M in Q4 2024. 231 funds tracked by Wall St. Rank hold MIR as of Q1 2025.

  • Marshall Wace reported no remaining Mirion Technologies position as of Q1 2025 after selling out during the quarter.
  • Marshall Wace sold 239,439 Mirion Technologies shares in Q1 2025, an estimated $4.18M.
  • Marshall Wace first reported a position in Mirion Technologies in Q4 2020 and held it in 8 quarters.
  • Marshall Wace's Mirion Technologies position peaked at $4.18M in Q4 2024.
  • 231 funds tracked by Wall St. Rank held Mirion Technologies as of Q1 2025.

Based on Marshall Wace's 13F filing for Q1 2025, filed 15 May 2025.