MIRION TECHNOLOGIES INC (MIR) Institutional Ownership Changes & 13F Activity

MIRION TECHNOLOGIES INC (MIR). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Polen Capital Management and Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Polen Capital ManagementSell-54,49824,921$463,281
Q4 2025Polen Capital ManagementBuy3,30079,419$1,859,993
Q3 2025Polen Capital ManagementBuy18,88976,119$1,770,528
Q2 2025Renaissance Technologies LLCSell-527,800115,900$2,495,327
Q2 2025Polen Capital ManagementBuy57,23057,230$1,232,162
Q1 2025Renaissance Technologies LLCBuy498,686643,700$9,333,650
Q4 2024Renaissance Technologies LLCBuy32,014145,014$2,530,494
Q3 2024Renaissance Technologies LLCSell-61,000113,000$1,250,910
Q2 2024Renaissance Technologies LLCSell-128,500174,000$1,868,760
Q1 2024Renaissance Technologies LLCBuy44,004302,500$3,439
Q2 2023Renaissance Technologies LLCBuy124,396258,496$2,184
Q1 2023Renaissance Technologies LLCBuy54,800134,100$1,145
Q4 2022Renaissance Technologies LLCBuy79,30079,300$524

Frequently asked questions about MIR activity

  • Which institutional owners are buying MIR?

    Institutional owners buying MIR include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in MIR activity?

    "Buy" means an investor increased their reported position in MIR compared to the prior reporting period. This reflects growing exposure to MIRION TECHNOLOGIES INC (MIR) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MIR increasing?

    Institutional interest in MIR can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

Related MIR Institutional Insights

MIR Institutional Ownership Changes and 13F Activity Q1 2026 | InsiderSet