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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
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 $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

ArrowMark Colorado Holdings's MIR Position: Q1 2026 in Review

ArrowMark Colorado Holdings reduced its Mirion Technologies (MIR) stake by 20% in Q1 2026, selling an estimated $3.18M and leaving 575,155 shares worth $10.7M. The position accounts for 0.28% of the portfolio, ranked #110.

ArrowMark Colorado Holdings first reported a position in MIR in Q2 2022 and has held it in 16 quarters since. The position peaked at $41.3M in Q4 2024. 360 funds tracked by Wall St. Rank hold MIR as of Q1 2026.

  • ArrowMark Colorado Holdings held 575,155 shares of Mirion Technologies worth $10.7M as of Q1 2026.
  • ArrowMark Colorado Holdings sold 140,910 Mirion Technologies shares in Q1 2026, an estimated $3.18M.
  • Mirion Technologies made up 0.28% of ArrowMark Colorado Holdings's portfolio in Q1 2026, its #110 holding.
  • ArrowMark Colorado Holdings first reported a position in Mirion Technologies in Q2 2022 and has held it in 16 quarters since.
  • ArrowMark Colorado Holdings's Mirion Technologies position peaked at $41.3M in Q4 2024.
  • 360 funds tracked by Wall St. Rank held Mirion Technologies as of Q1 2026.

Based on ArrowMark Colorado Holdings's 13F filing for Q1 2026, filed 15 May 2026.