T. Rowe Price Investment Management’s Mirion Technologies MIR Stock Holding History

T. Rowe Price Investment 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	$256M	Sell	14,288,075 -339,720	-2%	-$6.3M	0.17%	151
2026 Q1	$272M	Sell	14,627,795 -485,060	-3%	-$10.9M	0.19%	128
2025 Q4	$354M	Sell	15,112,855 -6,453,787	-30%	-$161M	0.22%	112
2025 Q3	$502M	Buy	21,566,642 +609,122	+3%	+$13.2M	0.31%	88
2025 Q2	$451M	Buy	20,957,520 +247,131	+1%	+$4.26M	0.28%	101
2025 Q1	$300M	Buy	20,710,389 +322,243	+2%	+$5.07M	0.2%	133
2024 Q4	$356M	Buy	20,388,146 +216,258	+1%	+$3.35M	0.22%	119
2024 Q3	$223M	Buy	20,171,888 +190,277	+1%	+$2M	0.13%	174
2024 Q2	$215M	Sell	19,981,611 -659,829	-3%	-$7.01M	0.14%	169
2024 Q1	$235M	Buy	20,641,440 +775,214	+4%	+$7.77M	0.14%	167
2023 Q4	$204M	Buy	19,866,226 +274,454	+1%	+$2.32M	0.13%	182
2023 Q3	$146M	Buy	19,591,772 +568,177	+3%	+$4.48M	0.1%	218
2023 Q2	$161M	Buy	19,023,595 +1,328,204	+8%	+$10.8M	0.11%	202
2023 Q1	$151M	Buy	+17,695,391	New	+$140M	0.11%	195

Other funds holding MIR

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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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 $3.38T AUM 44.17% 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

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

T. Rowe Price Investment Management's MIR Position: Q2 2026 in Review

T. Rowe Price Investment Management reduced its Mirion Technologies (MIR) stake by 2.3% in Q2 2026, selling an estimated $6.3M and leaving 14,288,075 shares worth $256M. The position accounts for 0.17% of the portfolio, ranked #151.

T. Rowe Price Investment Management first reported a position in MIR in Q1 2023 and has held it in 14 quarters since. The position peaked at $502M in Q3 2025. 351 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

T. Rowe Price Investment Management held 14,288,075 shares of Mirion Technologies worth $256M as of Q2 2026.
T. Rowe Price Investment Management sold 339,720 Mirion Technologies shares in Q2 2026, an estimated $6.3M.
Mirion Technologies made up 0.17% of T. Rowe Price Investment Management's portfolio in Q2 2026, its #151 holding.
T. Rowe Price Investment Management first reported a position in Mirion Technologies in Q1 2023 and has held it in 14 quarters since.
T. Rowe Price Investment Management's Mirion Technologies position peaked at $502M in Q3 2025.
351 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on T. Rowe Price Investment Management's 13F filing for Q2 2026, filed 14 Aug 2026.