Ameriprise’s Mirion Technologies MIR Stock Holding History

Ameriprise’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	$18M	Sell	1,002,284 -287,406	-22%	-$5.33M	﹤0.01%	1615
2026 Q1	$24M	Sell	1,289,690 -1,046,620	-45%	-$23.6M	0.01%	1288
2025 Q4	$54.7M	Buy	2,336,310 +619,118	+36%	+$15.4M	0.01%	824
2025 Q3	$39.9M	Buy	1,717,192 +1,456,987	+560%	+$31.5M	0.01%	1020
2025 Q2	$5.6M	Buy	260,205 +148,596	+133%	+$2.56M	﹤0.01%	2274
2025 Q1	$1.62M	Buy	111,609 +18,287	+20%	+$287K	﹤0.01%	3004
2024 Q4	$1.63M	Buy	+93,322	New	+$1.45M	﹤0.01%	3031
2021 Q3	–	Sell	-11,161	Closed	-$116K	–	3911
2021 Q2	$116K	Buy	+11,161	New	+$115K	﹤0.01%	3806

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 $3.38T 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

Ameriprise's MIR Position: Q2 2026 in Review

Ameriprise reduced its Mirion Technologies (MIR) stake by 22% in Q2 2026, selling an estimated $5.33M and leaving 1,002,284 shares worth $18M. The position accounts for ﹤0.01% of the portfolio, ranked #1615.

Ameriprise first reported a position in MIR in Q2 2021 and has held it in 8 quarters since. The position peaked at $54.7M in Q4 2025. 351 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

Ameriprise held 1,002,284 shares of Mirion Technologies worth $18M as of Q2 2026.
Ameriprise sold 287,406 Mirion Technologies shares in Q2 2026, an estimated $5.33M.
Mirion Technologies made up ﹤0.01% of Ameriprise's portfolio in Q2 2026, its #1615 holding.
Ameriprise first reported a position in Mirion Technologies in Q2 2021 and has held it in 8 quarters since.
Ameriprise's Mirion Technologies position peaked at $54.7M in Q4 2025.
351 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Ameriprise's 13F filing for Q2 2026, filed 14 Aug 2026.