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Rossby Financial’s Mirion Technologies MIR Stock Holding History

Rossby Financial’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 		$1.29K Sell
72
-24
-25% -$445 ﹤0.01% 1851
2026
Q1 		$1.79K Buy
96
+87
+967% +$1.96K ﹤0.01% 1844
2025
Q4 		$211 Buy
+9
New +$224 ﹤0.01% 1745

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

Rossby Financial's MIR Position: Q2 2026 in Review

Rossby Financial reduced its Mirion Technologies (MIR) stake by 25% in Q2 2026, selling an estimated $445 and leaving 72 shares worth $1.29K. The position accounts for ﹤0.01% of the portfolio, ranked #1851.

Rossby Financial first reported a position in MIR in Q4 2025 and has held it in 3 quarters since. The position peaked at $1.79K in Q1 2026. 352 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • Rossby Financial held 72 shares of Mirion Technologies worth $1.29K as of Q2 2026.
  • Rossby Financial sold 24 Mirion Technologies shares in Q2 2026, an estimated $445.
  • Mirion Technologies made up ﹤0.01% of Rossby Financial's portfolio in Q2 2026, its #1851 holding.
  • Rossby Financial first reported a position in Mirion Technologies in Q4 2025 and has held it in 3 quarters since.
  • Rossby Financial's Mirion Technologies position peaked at $1.79K in Q1 2026.
  • 352 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Rossby Financial's 13F filing for Q2 2026, filed 4 Aug 2026.