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Aperture Investors’s Mirion Technologies MIR Stock Holding History

Aperture Investors’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
-151,685
Closed -$2.82M – 99
2026
Q1 		$2.82M Hold
151,685
– – 0.36% 59
2025
Q4 		$3.55M Sell
151,685
-228,410
-60% -$5.7M 0.41% 61
2025
Q3 		$8.84M Buy
380,095
+35,095
+10% +$759K 1.21% 27
2025
Q2 		$7.43M Sell
345,000
-12,367
-3% -$213K 0.97% 33
2025
Q1 		$5.18M Sell
357,367
-14,203
-4% -$223K 0.66% 42
2024
Q4 		$6.48M Buy
371,570
+2,344
+0.6% +$36.4K 0.81% 40
2024
Q3 		$4.09M Buy
369,226
+149,132
+68% +$1.57M 0.52% 49
2024
Q2 		$2.36M Buy
220,094
+66,989
+44% +$712K 0.35% 63
2024
Q1 		$1.74M Buy
+153,105
New +$1.53M 0.22% 70

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

Aperture Investors's MIR Position: Q2 2026 in Review

Aperture Investors sold out of Mirion Technologies (MIR) in Q2 2026, closing a stake of 151,685 shares — an estimated $2.82M sold.

Aperture Investors first reported a position in MIR in Q1 2024 and held it in 9 quarters. The position peaked at $8.84M in Q3 2025. 351 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • Aperture Investors reported no remaining Mirion Technologies position as of Q2 2026 after selling out during the quarter.
  • Aperture Investors sold 151,685 Mirion Technologies shares in Q2 2026, an estimated $2.82M.
  • Aperture Investors first reported a position in Mirion Technologies in Q1 2024 and held it in 9 quarters.
  • Aperture Investors's Mirion Technologies position peaked at $8.84M in Q3 2025.
  • 351 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Aperture Investors's 13F filing for Q2 2026, filed 14 Aug 2026.