Polar Asset Management Partners’s Mirion Technologies MIR Stock Holding History

Polar Asset Management Partners’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 Q4	–	Sell	-105,000	Closed	-$2.44M	–	772
2025 Q3	$2.44M	Sell	105,000 -2,498	-2%	-$54K	0.03%	356
2025 Q2	$2.31M	Buy	+107,498	New	+$1.85M	0.04%	299
2025 Q1	–	Sell	-174,919	Closed	-$3.05M	–	660
2024 Q4	$3.05M	Buy	+174,919	New	+$2.71M	0.04%	294
2021 Q1	–	Sell	-2,800,000	Closed	-$30.5M	–	1066
2020 Q4	$30.5M	Sell	2,800,000 -700,000	-20%	-$7.23M	0.33%	46
2020 Q3	$37.7M	Buy	+3,500,000	New	+$36.3M	0.51%	29

Other funds holding MIR

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

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

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

CLG

Cooperman Leon G $3.05B AUM 42.78% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

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

Polar Asset Management Partners's MIR Position: Q4 2025 in Review

Polar Asset Management Partners sold out of Mirion Technologies (MIR) in Q4 2025, closing a stake of 105,000 shares — an estimated $2.44M sold.

Polar Asset Management Partners first reported a position in MIR in Q3 2020 and held it in 5 quarters. The position peaked at $37.7M in Q3 2020. 365 funds tracked by Wall St. Rank hold MIR as of Q4 2025.

Polar Asset Management Partners reported no remaining Mirion Technologies position as of Q4 2025 after selling out during the quarter.
Polar Asset Management Partners sold 105,000 Mirion Technologies shares in Q4 2025, an estimated $2.44M.
Polar Asset Management Partners first reported a position in Mirion Technologies in Q3 2020 and held it in 5 quarters.
Polar Asset Management Partners's Mirion Technologies position peaked at $37.7M in Q3 2020.
365 funds tracked by Wall St. Rank held Mirion Technologies as of Q4 2025.

Based on Polar Asset Management Partners's 13F filing for Q4 2025, filed 17 Feb 2026.