PEAK6’s Mirion Technologies MIR Stock Holding History

PEAK6’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	-55,000	Closed	-$1.29M	–	3064
2025 Q4	$1.29M	Buy	+55,000	New	+$1.37M	﹤0.01%	1651

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

PEAK6's MIR Position: Q1 2026 in Review

PEAK6 increased its Mirion Technologies (MIR) stake by 630% in Q1 2026, buying an estimated $992K and bringing the position to 50,935 shares worth $947K. The position accounts for ﹤0.01% of the portfolio, ranked #1725.

PEAK6 first reported a position in MIR in Q4 2025 and has held it in 2 quarters since. 360 funds tracked by Wall St. Rank hold MIR as of Q1 2026.

PEAK6 held 50,935 shares of Mirion Technologies worth $947K as of Q1 2026.
PEAK6 bought 43,961 Mirion Technologies shares in Q1 2026, an estimated $992K.
Mirion Technologies made up ﹤0.01% of PEAK6's portfolio in Q1 2026, its #1725 holding.
PEAK6 first reported a position in Mirion Technologies in Q4 2025 and has held it in 2 quarters since.
360 funds tracked by Wall St. Rank held Mirion Technologies as of Q1 2026.

Based on PEAK6's 13F filing for Q1 2026, filed 14 May 2026.