Royce & Associates’s Mirion Technologies MIR Stock Holding History

Royce & Associates’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	$6.23M	Sell	347,262 -104,493	-23%	-$1.94M	0.05%	469
2026 Q1	$8.4M	Buy	451,755 +157,837	+54%	+$3.56M	0.08%	374
2025 Q4	$6.88M	Buy	293,918 +141,835	+93%	+$3.54M	0.07%	413
2025 Q3	$3.54M	Sell	152,083 -638,011	-81%	-$13.8M	0.04%	524
2025 Q2	$17M	Buy	790,094 +121,451	+18%	+$2.09M	0.17%	178
2025 Q1	$9.7M	Buy	668,643 +215,643	+48%	+$3.39M	0.11%	292
2024 Q4	$7.9M	Sell	453,000 -31,000	-6%	-$481K	0.07%	389
2024 Q3	$5.36M	Buy	484,000 +4,000	+0.8%	+$42.1K	0.05%	464
2024 Q2	$5.16M	Buy	480,000 +50,000	+12%	+$531K	0.05%	474
2024 Q1	$4.89M	Buy	430,000 +205,000	+91%	+$2.05M	0.04%	498
2023 Q4	$2.31M	Hold	225,000	–	–	0.02%	626
2023 Q3	$1.68M	Hold	225,000	–	–	0.02%	670
2023 Q2	$1.9M	Hold	225,000	–	–	0.02%	669
2023 Q1	$1.92M	Buy	225,000 +100,000	+80%	+$793K	0.02%	660
2022 Q4	$826K	Hold	125,000	–	–	0.01%	781
2022 Q3	$934K	Hold	125,000	–	–	0.01%	745
2022 Q2	$720K	Hold	125,000	–	–	0.01%	797
2022 Q1	$1.01M	Buy	+125,000	New	+$1.08M	0.01%	806

Other funds holding MIR

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

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 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

Royce & Associates's MIR Position: Q2 2026 in Review

Royce & Associates reduced its Mirion Technologies (MIR) stake by 23% in Q2 2026, selling an estimated $1.94M and leaving 347,262 shares worth $6.23M. The position accounts for 0.05% of the portfolio, ranked #469.

Royce & Associates first reported a position in MIR in Q1 2022 and has held it in 18 quarters since. The position peaked at $17M in Q2 2025. 351 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

Royce & Associates held 347,262 shares of Mirion Technologies worth $6.23M as of Q2 2026.
Royce & Associates sold 104,493 Mirion Technologies shares in Q2 2026, an estimated $1.94M.
Mirion Technologies made up 0.05% of Royce & Associates's portfolio in Q2 2026, its #469 holding.
Royce & Associates first reported a position in Mirion Technologies in Q1 2022 and has held it in 18 quarters since.
Royce & Associates's Mirion Technologies position peaked at $17M in Q2 2025.
351 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Royce & Associates's 13F filing for Q2 2026, filed 14 Aug 2026.