PEAK6
MIR icon

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 		$3.22M Sell
173,000
-600
-0.3% -$13.5K 0.01% 1116
2025
Q4 		$4.07M Sell
173,600
-221,900
-56% -$5.53M 0.01% 1047
2025
Q3 		$9.2M Buy
395,500
+170,300
+76% +$3.68M 0.01% 729
2025
Q2 		$4.85M Sell
225,200
-56,900
-20% -$981K 0.01% 974
2025
Q1 		$4.09M Sell
282,100
-55,900
-17% -$879K 0.01% 1037
2024
Q4 		$5.9M Buy
+338,000
New +$5.24M 0.01% 820

Other funds holding MIR

BlackRock
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
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
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
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Millennium Management
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.