Brown Advisory
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Brown Advisory’s Mirion Technologies MIR Stock Holding History

Brown Advisory’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
Q2 		– Sell
-1,300,073
Closed -$24.2M – 1498
2026
Q1 		$24.2M Sell
1,300,073
-312,978
-19% -$7.06M 0.04% 296
2025
Q4 		$37.8M Sell
1,613,051
-1,108,732
-41% -$27.7M 0.05% 239
2025
Q3 		$63.3M Sell
2,721,783
-2,678,622
-50% -$57.9M 0.08% 170
2025
Q2 		$116M Sell
5,400,405
-160,056
-3% -$2.76M 0.15% 108
2025
Q1 		$80.6M Buy
5,560,461
+1,748,437
+46% +$27.5M 0.12% 131
2024
Q4 		$66.5M Buy
+3,812,024
New +$59.1M 0.08% 168

Other funds holding MIR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return
CLG
Cooperman Leon G $3.55B AUM 41.85% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
CAM
Congress Asset Management Boston, Massachusetts $16.3B AUM 42.69% 1-Year Est. Return

Brown Advisory's MIR Position: Q2 2026 in Review

Brown Advisory sold out of Mirion Technologies (MIR) in Q2 2026, closing a stake of 1,300,073 shares — an estimated $24.2M sold.

Brown Advisory first reported a position in MIR in Q4 2024 and held it in 6 quarters. The position peaked at $116M in Q2 2025. 351 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • Brown Advisory reported no remaining Mirion Technologies position as of Q2 2026 after selling out during the quarter.
  • Brown Advisory sold 1,300,073 Mirion Technologies shares in Q2 2026, an estimated $24.2M.
  • Brown Advisory first reported a position in Mirion Technologies in Q4 2024 and held it in 6 quarters.
  • Brown Advisory's Mirion Technologies position peaked at $116M in Q2 2025.
  • 351 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Brown Advisory's 13F filing for Q2 2026, filed 14 Aug 2026.