Munro Partners’s Mirion Technologies MIR Stock Holding History

Munro 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
2026 Q1	–	Sell	-222,720	Closed	-$5.22M	–	68
2025 Q4	$5.22M	Buy	222,720 +22,810	+11%	+$569K	0.14%	56
2025 Q3	$4.65M	Buy	199,910 +78,035	+64%	+$1.69M	0.13%	59
2025 Q2	$2.62M	Buy	+121,875	New	+$2.1M	0.08%	55
2025 Q1	–	Sell	-1,122,215	Closed	-$19.6M	–	72
2024 Q4	$19.6M	Buy	+1,122,215	New	+$17.4M	0.65%	35

Other funds holding MIR

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

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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

CLG

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

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

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

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

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Munro Partners's MIR Position: Q1 2026 in Review

Munro Partners sold out of Mirion Technologies (MIR) in Q1 2026, closing a stake of 222,720 shares — an estimated $5.22M sold.

Munro Partners first reported a position in MIR in Q4 2024 and held it in 4 quarters. The position peaked at $19.6M in Q4 2024. 360 funds tracked by Wall St. Rank hold MIR as of Q1 2026.

Munro Partners reported no remaining Mirion Technologies position as of Q1 2026 after selling out during the quarter.
Munro Partners sold 222,720 Mirion Technologies shares in Q1 2026, an estimated $5.22M.
Munro Partners first reported a position in Mirion Technologies in Q4 2024 and held it in 4 quarters.
Munro Partners's Mirion Technologies position peaked at $19.6M in Q4 2024.
360 funds tracked by Wall St. Rank held Mirion Technologies as of Q1 2026.

Based on Munro Partners's 13F filing for Q1 2026, filed 6 May 2026.