George Soros’s Mirion Technologies MIR Stock Holding History

George Soros’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
2025 Q3	–	Sell	-71,700	Closed	-$1.54M	–	222
2025 Q2	$1.54M	Buy	+71,700	New	+$1.24M	0.02%	185

Other funds holding MIR

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

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

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

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

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

Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

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

Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

George Soros's MIR Position: Q3 2025 in Review

George Soros sold out of Mirion Technologies (MIR) in Q3 2025, closing a stake of 71,700 shares — an estimated $1.54M sold.

George Soros first reported a position in MIR in Q2 2025 and held it in 1 quarter. The position peaked at $1.54M in Q2 2025. 342 funds tracked by Wall St. Rank hold MIR as of Q3 2025.

George Soros reported no remaining Mirion Technologies position as of Q3 2025 after selling out during the quarter.
George Soros sold 71,700 Mirion Technologies shares in Q3 2025, an estimated $1.54M.
George Soros first reported a position in Mirion Technologies in Q2 2025 and held it in 1 quarter.
George Soros's Mirion Technologies position peaked at $1.54M in Q2 2025.
342 funds tracked by Wall St. Rank held Mirion Technologies as of Q3 2025.

Based on Soros Fund Management's 13F filing for Q3 2025, filed 14 Nov 2025.