Alyeska Investment Group
MIR icon

Alyeska Investment Group’s Mirion Technologies MIR Stock Holding History

Alyeska Investment 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 		$171M Buy
9,534,955
+6,833,375
+253% +$127M 0.44% 53
2026
Q1 		$50.2M Buy
2,701,580
+1,170,363
+76% +$26.4M 0.14% 191
2025
Q4 		$35.9M Sell
1,531,217
-1,596,528
-51% -$39.8M 0.1% 234
2025
Q3 		$72.8M Sell
3,127,745
-1,319,108
-30% -$28.5M 0.22% 125
2025
Q2 		$95.7M Buy
4,446,853
+296,591
+7% +$5.11M 0.34% 84
2025
Q1 		$60.2M Buy
4,150,262
+388,947
+10% +$6.11M 0.24% 120
2024
Q4 		$65.6M Sell
3,761,315
-4,057,311
-52% -$62.9M 0.25% 105
2024
Q3 		$86.6M Buy
7,818,626
+843,592
+12% +$8.87M 0.44% 62
2024
Q2 		$74.9M Buy
6,975,034
+51,235
+0.7% +$545K 0.43% 74
2024
Q1 		$78.7M Buy
6,923,799
+1,765,923
+34% +$17.7M 0.48% 61
2023
Q4 		$52.9M Sell
5,157,876
-1,115,212
-18% -$9.41M 0.35% 87
2023
Q3 		$46.9M Buy
6,273,088
+2,403,595
+62% +$18.9M 0.32% 108
2023
Q2 		$32.7M Sell
3,869,493
-1,154,205
-23% -$9.37M 0.24% 139
2023
Q1 		$42.9M Sell
5,023,698
-2,724,337
-35% -$21.6M 0.38% 89
2022
Q4 		$51.2M Sell
7,748,035
-4,950,463
-39% -$33.3M 0.53% 65
2022
Q3 		$94.9M Sell
12,698,498
-925,656
-7% -$6.52M 1.11% 12
2022
Q2 		$78.5M Sell
13,624,154
-465,459
-3% -$3.42M 0.9% 18
2022
Q1 		$114M Buy
14,089,613
+496,160
+4% +$4.27M 1.25% 6
2021
Q4 		$142M Buy
13,593,453
+9,407,462
+225% +$101M 1.64% 1
2021
Q3 		$42.8M Buy
4,185,991
+2,445,192
+140% +$24.7M 0.53% 50
2021
Q2 		$18.1M Buy
1,740,799
+726,513
+72% +$7.47M 0.21% 142
2021
Q1 		$10.6M Sell
1,014,286
-2,963,917
-75% -$34.8M 0.14% 192
2020
Q4 		$43.4M Buy
3,978,203
+3,688,727
+1,274% +$38.1M 0.61% 31
2020
Q3 		$3.12M Buy
+289,476
New +$3M 0.05% 305

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
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
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Alyeska Investment Group's MIR Position: Q2 2026 in Review

Alyeska Investment Group increased its Mirion Technologies (MIR) stake by 253% in Q2 2026, buying an estimated $127M and bringing the position to 9,534,955 shares worth $171M. The position accounts for 0.44% of the portfolio, ranked #53.

Alyeska Investment Group first reported a position in MIR in Q3 2020 and has held it in 24 quarters since. 351 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • Alyeska Investment Group held 9,534,955 shares of Mirion Technologies worth $171M as of Q2 2026.
  • Alyeska Investment Group bought 6,833,375 Mirion Technologies shares in Q2 2026, an estimated $127M.
  • Mirion Technologies made up 0.44% of Alyeska Investment Group's portfolio in Q2 2026, its #53 holding.
  • Alyeska Investment Group first reported a position in Mirion Technologies in Q3 2020 and has held it in 24 quarters since.
  • 351 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

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