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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
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 $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

Madison Asset Management's MIR Position: Q1 2026 in Review

Madison Asset Management increased its Mirion Technologies (MIR) stake by 119% in Q1 2026, buying an estimated $1.53M and bringing the position to 124,323 shares worth $2.31M. The position accounts for 0.03% of the portfolio, ranked #242.

Madison Asset Management first reported a position in MIR in Q4 2025 and has held it in 2 quarters since. 360 funds tracked by Wall St. Rank hold MIR as of Q1 2026.

  • Madison Asset Management held 124,323 shares of Mirion Technologies worth $2.31M as of Q1 2026.
  • Madison Asset Management bought 67,679 Mirion Technologies shares in Q1 2026, an estimated $1.53M.
  • Mirion Technologies made up 0.03% of Madison Asset Management's portfolio in Q1 2026, its #242 holding.
  • Madison Asset Management first reported a position in Mirion Technologies in Q4 2025 and has held it in 2 quarters since.
  • 360 funds tracked by Wall St. Rank held Mirion Technologies as of Q1 2026.

Based on Madison Asset Management's 13F filing for Q1 2026, filed 7 May 2026.