Rockefeller Capital Management
MIR icon

Rockefeller Capital Management’s Mirion Technologies MIR Stock Holding History

Rockefeller Capital Management’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 		$26.3M Buy
1,466,144
+73,420
+5% +$1.36M 0.04% 398
2026
Q1 		$25.9M Buy
1,392,724
+253,687
+22% +$5.72M 0.05% 377
2025
Q4 		$26.7M Buy
1,139,037
+167,454
+17% +$4.18M 0.05% 361
2025
Q3 		$22.6M Sell
971,583
-90,775
-9% -$1.96M 0.04% 377
2025
Q2 		$22.9M Buy
1,062,358
+124,121
+13% +$2.14M 0.05% 350
2025
Q1 		$13.6M Buy
+938,237
New +$14.7M 0.03% 476
2021
Q2 		– Sell
-500
Closed -$5K – 3536
2021
Q1 		$5K Buy
+500
New +$5.87K ﹤0.01% 2898

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

Rockefeller Capital Management's MIR Position: Q2 2026 in Review

Rockefeller Capital Management increased its Mirion Technologies (MIR) stake by 5.3% in Q2 2026, buying an estimated $1.36M and bringing the position to 1,466,144 shares worth $26.3M. The position accounts for 0.04% of the portfolio, ranked #398.

Rockefeller Capital Management first reported a position in MIR in Q1 2021 and has held it in 7 quarters since. The position peaked at $26.7M in Q4 2025. 351 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • Rockefeller Capital Management held 1,466,144 shares of Mirion Technologies worth $26.3M as of Q2 2026.
  • Rockefeller Capital Management bought 73,420 Mirion Technologies shares in Q2 2026, an estimated $1.36M.
  • Mirion Technologies made up 0.04% of Rockefeller Capital Management's portfolio in Q2 2026, its #398 holding.
  • Rockefeller Capital Management first reported a position in Mirion Technologies in Q1 2021 and has held it in 7 quarters since.
  • Rockefeller Capital Management's Mirion Technologies position peaked at $26.7M in Q4 2025.
  • 351 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Rockefeller Capital Management's 13F filing for Q2 2026, filed 13 Aug 2026.