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Atria Investments’s Mirion Technologies MIR Stock Holding History

Atria Investments’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 		$223K Buy
11,985
+2,335
+24% +$52.7K ﹤0.01% 1932
2025
Q4 		$226K Buy
+9,650
New +$241K ﹤0.01% 1908

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

Atria Investments's MIR Position: Q1 2026 in Review

Atria Investments increased its Mirion Technologies (MIR) stake by 24% in Q1 2026, buying an estimated $52.7K and bringing the position to 11,985 shares worth $223K. The position accounts for ﹤0.01% of the portfolio, ranked #1932.

Atria Investments first reported a position in MIR in Q4 2025 and has held it in 2 quarters since. The position peaked at $226K in Q4 2025. 360 funds tracked by Wall St. Rank hold MIR as of Q1 2026.

  • Atria Investments held 11,985 shares of Mirion Technologies worth $223K as of Q1 2026.
  • Atria Investments bought 2,335 Mirion Technologies shares in Q1 2026, an estimated $52.7K.
  • Mirion Technologies made up ﹤0.01% of Atria Investments's portfolio in Q1 2026, its #1932 holding.
  • Atria Investments first reported a position in Mirion Technologies in Q4 2025 and has held it in 2 quarters since.
  • Atria Investments's Mirion Technologies position peaked at $226K in Q4 2025.
  • 360 funds tracked by Wall St. Rank held Mirion Technologies as of Q1 2026.

Based on Atria Investments's 13F filing for Q1 2026, filed 5 May 2026.