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Mirion Technologies, Inc.

MIR
Exchange
NYSE
Industry
Measuring & Controlling Devices, NEC
SEC CIK
0001809987

In the last 90 days, Mirion Technologies, Inc. insiders filed 1 open-market purchase and 0 sales; 351 institutions reported holding it in 13F filings for Q2 2026, worth $4.70B in total; Maverick Capital is the only superinvestor holding it.

Q1 2023 vs. Q4 2022

How the institutions holding Mirion Technologies, Inc. changed between Q4 2022 and Q1 2023.

All holders in Q1 2023All holders in Q4 2022

13F holders of MIR: Q4 2022 compared with Q1 2023
MeasureQ4 2022Q1 2023Change
Holders119117−2
Shares153.3M170.0M+16.8M (+10.9%)
Value$1.01B$1.45B+$439.2M (+43.4%)

New holders (17)

Institutions that held Mirion Technologies, Inc. at the end of Q1 2023 but not at the end of Q4 2022.

Institutions new to MIR in Q1 2023
InstitutionSharesValue% of portfolio
T. Rowe Price Investment Management, Inc.17,695,391$151.1M0.11%
Pantechnicon Advisors LLP1,030,000$8.80M3.56%
Arrowstreet Capital, Limited Partnership532,265$4.55M0.01%
ING Groep NV500,000$4.27M0.04%
CIBC World Markets Corp500,000$4.27M0.07%
Roubaix Capital, LLC448,151$3.83M2.92%
TD Asset Management Inc330,958$2.83M0.00%
Qube Research & Technologies Ltd162,218$1.39M0.01%
Select Equity Group, L.P.159,466$1.36M0.01%
Squarepoint Ops LLC105,750$903.1K0.01%
First Trust Advisors LP74,430$635.6K0.00%
Occudo Quantitative Strategies LP69,848$596.5K0.05%
Handelsbanken Fonder AB22,900$196.0K0.00%
Walleye Trading LLC4,212$36.0K0.00%
Advisory Services Network, LLC2,345$20.0K0.00%
PEAK6 Investments LLC263$2.25K0.00%
CWM, LLC31$00.00%

Sold out (19)

Institutions that held Mirion Technologies, Inc. at the end of Q4 2022 and filed for Q1 2023 without it.

Institutions that sold out of MIR in Q1 2023
InstitutionShares, Q4 2022Value, Q4 2022
Senator Investment Group LP1,650,000$10.9M
Clearline Capital LP626,431$4.14M
Artal Group S.A.500,000$3.31M
Gyon Technologies Capital Management, LP409,626$2.71M
Western Standard LLC291,235$1.93M
Group One Trading, L.P.90,766$600.0K
STRS Ohio28,900$191.0K
Acuitas Investments, LLC27,600$182.4K
HRT Financial LP25,978$171.0K
CenterBook Partners LP24,571$162.4K
Worth Venture Partners, LLC13,369$88.4K
Quantbot Technologies LP11,638$76.9K
Jump Financial, LLC10,029$66.3K
Tudor Investment Corp Et Al10,000$66.0K
Citadel Advisors LLC5,496$36.3K
Madden Securities Corp3,354$22.2K
Balyasny Asset Management LLC217$1.43K
Ellevest, Inc.50$331
Lindbrook Capital, LLC29$192