T. Rowe Price Investment Management
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T. Rowe Price Investment Management’s Mirion Technologies MIR Stock Holding History

T. Rowe Price Investment Management’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 		$272M Sell
14,627,795
-485,060
-3% -$10.9M 0.19% 128
2025
Q4 		$354M Sell
15,112,855
-6,453,787
-30% -$161M 0.22% 112
2025
Q3 		$502M Buy
21,566,642
+609,122
+3% +$13.2M 0.31% 88
2025
Q2 		$451M Buy
20,957,520
+247,131
+1% +$4.26M 0.28% 101
2025
Q1 		$300M Buy
20,710,389
+322,243
+2% +$5.07M 0.2% 133
2024
Q4 		$356M Buy
20,388,146
+216,258
+1% +$3.35M 0.22% 119
2024
Q3 		$223M Buy
20,171,888
+190,277
+1% +$2M 0.13% 174
2024
Q2 		$215M Sell
19,981,611
-659,829
-3% -$7.01M 0.14% 169
2024
Q1 		$235M Buy
20,641,440
+775,214
+4% +$7.77M 0.14% 167
2023
Q4 		$204M Buy
19,866,226
+274,454
+1% +$2.32M 0.13% 182
2023
Q3 		$146M Buy
19,591,772
+568,177
+3% +$4.48M 0.1% 218
2023
Q2 		$161M Buy
19,023,595
+1,328,204
+8% +$10.8M 0.11% 202
2023
Q1 		$151M Buy
+17,695,391
New +$140M 0.11% 195

Other funds holding MIR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 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
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

T. Rowe Price Investment Management's MIR Position: Q1 2026 in Review

T. Rowe Price Investment Management reduced its Mirion Technologies (MIR) stake by 3.2% in Q1 2026, selling an estimated $10.9M and leaving 14,627,795 shares worth $272M. The position accounts for 0.19% of the portfolio, ranked #128.

T. Rowe Price Investment Management first reported a position in MIR in Q1 2023 and has held it in 13 quarters since. The position peaked at $502M in Q3 2025. 361 funds tracked by Wall St. Rank hold MIR as of Q1 2026.

  • T. Rowe Price Investment Management held 14,627,795 shares of Mirion Technologies worth $272M as of Q1 2026.
  • T. Rowe Price Investment Management sold 485,060 Mirion Technologies shares in Q1 2026, an estimated $10.9M.
  • Mirion Technologies made up 0.19% of T. Rowe Price Investment Management's portfolio in Q1 2026, its #128 holding.
  • T. Rowe Price Investment Management first reported a position in Mirion Technologies in Q1 2023 and has held it in 13 quarters since.
  • T. Rowe Price Investment Management's Mirion Technologies position peaked at $502M in Q3 2025.
  • 361 funds tracked by Wall St. Rank held Mirion Technologies as of Q1 2026.

Based on T. Rowe Price Investment Management's 13F filing for Q1 2026, filed 15 May 2026.