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ArrowMark Colorado Holdings’s Mirion Technologies MIR Stock Holding History

ArrowMark Colorado Holdings’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 		$10.5M Buy
588,240
+13,085
+2% +$243K 0.44% 80
2026
Q1 		$10.7M Sell
575,155
-140,910
-20% -$3.18M 0.28% 110
2025
Q4 		$16.8M Sell
716,065
-93,155
-12% -$2.32M 0.37% 79
2025
Q3 		$18.8M Sell
809,220
-868,292
-52% -$18.8M 0.35% 78
2025
Q2 		$36.1M Sell
1,677,512
-511,414
-23% -$8.82M 0.65% 52
2025
Q1 		$31.7M Sell
2,188,926
-179,624
-8% -$2.82M 0.51% 64
2024
Q4 		$41.3M Sell
2,368,550
-631,510
-21% -$9.79M 0.56% 59
2024
Q3 		$33.2M Buy
3,000,060
+241,334
+9% +$2.54M 0.43% 68
2024
Q2 		$29.6M Sell
2,758,726
-40,266
-1% -$428K 0.35% 75
2024
Q1 		$31.8M Sell
2,798,992
-827,346
-23% -$8.29M 0.36% 76
2023
Q4 		$37.2M Buy
3,626,338
+327,485
+10% +$2.76M 0.41% 69
2023
Q3 		$24.6M Buy
3,298,853
+412,690
+14% +$3.25M 0.3% 86
2023
Q2 		$24.4M Buy
2,886,163
+219,015
+8% +$1.78M 0.27% 89
2023
Q1 		$22.8M Buy
2,667,148
+305,917
+13% +$2.43M 0.26% 86
2022
Q4 		$15.6M Buy
2,361,231
+78,817
+3% +$531K 0.19% 108
2022
Q3 		$17.1M Buy
2,282,414
+702,717
+44% +$4.95M 0.21% 109
2022
Q2 		$9.1M Buy
+1,579,697
New +$11.6M 0.1% 175

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

ArrowMark Colorado Holdings's MIR Position: Q2 2026 in Review

ArrowMark Colorado Holdings increased its Mirion Technologies (MIR) stake by 2.3% in Q2 2026, buying an estimated $243K and bringing the position to 588,240 shares worth $10.5M. The position accounts for 0.44% of the portfolio, ranked #80.

ArrowMark Colorado Holdings first reported a position in MIR in Q2 2022 and has held it in 17 quarters since. The position peaked at $41.3M in Q4 2024. 352 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • ArrowMark Colorado Holdings held 588,240 shares of Mirion Technologies worth $10.5M as of Q2 2026.
  • ArrowMark Colorado Holdings bought 13,085 Mirion Technologies shares in Q2 2026, an estimated $243K.
  • Mirion Technologies made up 0.44% of ArrowMark Colorado Holdings's portfolio in Q2 2026, its #80 holding.
  • ArrowMark Colorado Holdings first reported a position in Mirion Technologies in Q2 2022 and has held it in 17 quarters since.
  • ArrowMark Colorado Holdings's Mirion Technologies position peaked at $41.3M in Q4 2024.
  • 352 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on ArrowMark Colorado Holdings's 13F filing for Q2 2026, filed 13 Aug 2026.