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Madison Asset Management’s Mirion Technologies MIR Stock Holding History

Madison Asset 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
Q2 		$3.41M Buy
190,001
+65,678
+53% +$1.22M 0.04% 213
2026
Q1 		$2.31M Buy
124,323
+67,679
+119% +$1.53M 0.03% 242
2025
Q4 		$1.33M Buy
+56,644
New +$1.41M 0.02% 278

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 $3.38T AUM 44.17% 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 $15.4B AUM 30.35% 1-Year Est. Return

Madison Asset Management's MIR Position: Q2 2026 in Review

Madison Asset Management increased its Mirion Technologies (MIR) stake by 53% in Q2 2026, buying an estimated $1.22M and bringing the position to 190,001 shares worth $3.41M. The position accounts for 0.04% of the portfolio, ranked #213.

Madison Asset Management first reported a position in MIR in Q4 2025 and has held it in 3 quarters since. 351 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • Madison Asset Management held 190,001 shares of Mirion Technologies worth $3.41M as of Q2 2026.
  • Madison Asset Management bought 65,678 Mirion Technologies shares in Q2 2026, an estimated $1.22M.
  • Mirion Technologies made up 0.04% of Madison Asset Management's portfolio in Q2 2026, its #213 holding.
  • Madison Asset Management first reported a position in Mirion Technologies in Q4 2025 and has held it in 3 quarters since.
  • 351 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Madison Asset Management's 13F filing for Q2 2026, filed 10 Aug 2026.