Select Equity Group
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Select Equity Group’s Mirion Technologies MIR Stock Holding History

Select Equity Group’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 		$28.3M Buy
1,576,023
+520,555
+49% +$9.65M 0.14% 95
2026
Q1 		$19.6M Buy
1,055,468
+286,435
+37% +$6.46M 0.1% 109
2025
Q4 		$18M Sell
769,033
-372,231
-33% -$9.28M 0.08% 123
2025
Q3 		$26.5M Sell
1,141,264
-886,295
-44% -$19.2M 0.11% 97
2025
Q2 		$43.7M Sell
2,027,559
-264,677
-12% -$4.56M 0.18% 77
2025
Q1 		$33.2M Sell
2,292,236
-21,183
-0.9% -$333K 0.14% 83
2024
Q4 		$40.4M Sell
2,313,419
-2,004,285
-46% -$31.1M 0.16% 80
2024
Q3 		$47.8M Sell
4,317,704
-1,466,184
-25% -$15.4M 0.17% 81
2024
Q2 		$62.1M Sell
5,783,888
-176,645
-3% -$1.88M 0.24% 72
2024
Q1 		$67.8M Buy
5,960,533
+3,740,265
+168% +$37.5M 0.24% 71
2023
Q4 		$22.8M Buy
2,220,268
+1,890,107
+572% +$16M 0.08% 96
2023
Q3 		$2.47M Buy
330,161
+46,863
+17% +$369K 0.01% 134
2023
Q2 		$2.39M Buy
283,298
+123,832
+78% +$1M 0.01% 135
2023
Q1 		$1.36M Buy
+159,466
New +$1.27M ﹤0.01% 141

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

Select Equity Group's MIR Position: Q2 2026 in Review

Select Equity Group increased its Mirion Technologies (MIR) stake by 49% in Q2 2026, buying an estimated $9.65M and bringing the position to 1,576,023 shares worth $28.3M. The position accounts for 0.14% of the portfolio, ranked #95.

Select Equity Group first reported a position in MIR in Q1 2023 and has held it in 14 quarters since. The position peaked at $67.8M in Q1 2024. 351 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • Select Equity Group held 1,576,023 shares of Mirion Technologies worth $28.3M as of Q2 2026.
  • Select Equity Group bought 520,555 Mirion Technologies shares in Q2 2026, an estimated $9.65M.
  • Mirion Technologies made up 0.14% of Select Equity Group's portfolio in Q2 2026, its #95 holding.
  • Select Equity Group first reported a position in Mirion Technologies in Q1 2023 and has held it in 14 quarters since.
  • Select Equity Group's Mirion Technologies position peaked at $67.8M in Q1 2024.
  • 351 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Select Equity Group's 13F filing for Q2 2026, filed 14 Aug 2026.