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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.

Q4 2024 vs. Q3 2024

How the institutions holding Mirion Technologies, Inc. changed between Q3 2024 and Q4 2024.

All holders in Q4 2024All holders in Q3 2024

13F holders of MIR: Q3 2024 compared with Q4 2024
MeasureQ3 2024Of which not filed for Q4 2024Q4 2024Change
Holders1764224+52
Shares205.1M531.7K193.9M−10.7M (−5.2%)
Value$2.27B$8.11M$3.38B+$1.12B (+49.4%)

4 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (75)

Institutions that held Mirion Technologies, Inc. at the end of Q4 2024 but not at the end of Q3 2024.

Institutions new to MIR in Q4 2024
InstitutionSharesValue% of portfolio
Brown Advisory Inc3,812,024$66.5M0.08%
William Blair Investment Management, LLC3,041,016$53.1M0.13%
Artemis Investment Management LLP2,186,553$38.2M0.54%
Bornite Capital Management LP2,117,000$36.9M4.97%
Munro Partners1,122,215$19.6M0.68%
Masters Capital Management LLC1,000,000$17.4M2.98%
Raymond James Financial Inc983,610$17.2M0.01%
Silvercrest Asset Management Group LLC968,561$16.9M0.11%
Greenhouse Funds LLLP700,623$12.2M0.54%
Schroder Investment Management Group675,084$11.8M0.01%
Ci Investments Inc.659,720$11.5M0.04%
Pier Capital, LLC657,957$11.5M1.64%
Emerald Advisers, LLC607,991$10.6M0.41%
Arosa Capital Management LP493,000$8.60M5.66%
Ensign Peak Advisors, Inc472,221$8.24M0.01%
Trexquant Investment LP453,544$7.91M0.09%
Kingdon Capital Management, L.L.C.400,000$6.98M1.19%
Discovery Capital Management, LLC360,000$6.28M0.43%
Duquesne Family Office LLCSuperinvestorDuquesne Family Office342,700$5.98M0.17%
D. E. Shaw & Co., Inc.319,544$5.58M0.01%
Walleye Trading LLC296,844$5.18M0.10%
EAM Global Investors LLC282,534$4.93M0.88%
Paradoxiom Capital L.P.280,335$4.89M2.02%
EAM Investors, LLC257,777$4.50M0.64%
Schonfeld Strategic Advisors LLC252,686$4.41M0.03%
Scopus Asset Management, L.P.246,060$4.29M0.16%
Bridgewater Associates, LP243,755$4.25M0.02%
Advantage Alpha Capital Partners LP235,565$4.11M0.97%
Emerald Mutual Fund Advisers Trust226,679$3.96M0.24%
SEI Investments Co187,918$3.28M0.00%
Polar Asset Management Partners Inc.174,919$3.05M0.05%
Wolverine Asset Management LLC162,000$2.83M0.05%
HRT Financial LP155,399$2.71M0.01%
Graham Capital Management, L.P.107,748$1.88M0.06%
Walleye Capital LLC103,151$1.80M0.02%
CastleKnight Management LP99,900$1.74M0.19%
Nomura Holdings Inc97,824$1.71M0.01%
Bryce Point Capital, LLC95,998$1.68M0.49%
Ameriprise Financial Inc93,322$1.63M0.00%
AQR Capital Management LLC88,812$1.55M0.00%
Wolverine Trading, LLC69,607$1.22M0.03%
Cresset Asset Management, LLC58,500$1.02M0.00%
Engineers Gate Manager LP48,932$853.9K0.01%
Police & Firemen's Retirement System of New Jersey44,108$769.7K0.01%
Counterpoint Mutual Funds LLC44,022$768.2K0.10%
Group One Trading, L.P.43,240$754.5K0.03%
KLP Kapitalforvaltning AS37,500$654.4K0.00%
Balyasny Asset Management LLC36,502$637.0K0.00%
Susquehanna Fundamental Investments, LLC36,400$635.2K0.01%
BNP Paribas Arbitrage, SA27,520$480.2K0.00%
Jain Global LLC25,665$447.9K0.01%
Occudo Quantitative Strategies LP22,566$393.8K0.07%
Y-Intercept (Hong Kong) Ltd22,551$393.5K0.03%
Gilder Gagnon Howe & Co LLC22,234$388.0K0.00%
CIBC World Markets Corp19,332$337.3K0.00%
STRS Ohio19,300$336.8K0.00%
Diametric Capital, LP16,557$288.9K0.20%
Options Solutions, LLC13,762$240.1K0.11%
LPL Financial LLC12,106$211.3K0.00%
Longboard Asset Management, LP11,594$202.3K0.54%
CI Private Wealth, LLC10,700$186.7K0.00%
Harvest Fund Management Co., Ltd6,858$120.0K0.01%
Bessemer Group Inc1,110$19.0K0.00%
Aster Capital Management (DIFC) Ltd855$14.9K0.01%
Murphy & Mullick Capital Management Corp250$4.36K0.00%
Amundi135$2.23K0.00%
Parallax Volatility Advisers, L.P.120$2.09K0.00%
Steward Partners Investment Advisory, LLC100$1.75K0.00%
Ameriflex Group, Inc.94$1.49K0.00%
EverSource Wealth Advisors, LLC81$1.41K0.00%
Neo Ivy Capital Management63$1.00K0.00%
IFP Advisors, Inc12$2090.00%
Global Financial Private Client, LLC11$1920.00%
SBI Securities Co., Ltd.10$1750.00%
Parkworth Wealth Management, Inc.6$1050.00%

Sold out (23)

Institutions that held Mirion Technologies, Inc. at the end of Q3 2024 and filed for Q4 2024 without it.

Institutions that sold out of MIR in Q4 2024
InstitutionShares, Q3 2024Value, Q3 2024
P2 Capital Partners, LLC3,350,000$37.1M
Crestline Management, LP941,649$10.4M
Freshford Capital Management, LLC475,801$5.27M
Shellback Capital, LP408,810$4.53M
Portolan Capital Management, LLC236,975$2.62M
Russell Investments Group, Ltd.163,766$1.81M
Concentric Capital Strategies, LP111,517$1.23M
Cinctive Capital Management LP85,313$944.4K
MYDA Advisors LLC80,000$885.6K
Boston Partners79,931$884.8K
Gotham Asset Management, LLC29,010$321.1K
Connor, Clark & Lunn Investment Management Ltd.25,396$281.1K
Nordwand Advisors, LLC25,000$276.8K
Kestra Advisory Services, LLC19,612$217.1K
Levin Capital Strategies, L.P.15,000$166.1K
Axq Capital, LP12,878$142.6K
Paloma Partners Management Co11,040$122.2K
SG Americas Securities, LLC9,875$109.0K
GWM Advisors LLC1,324$14.7K
Zazove Associates LLC461$5.10K
Capital Performance Advisors LLP77$852
Anfield Capital Management, LLC45$498
Claris Advisors, LLC12$133

Not filed for Q4 2024 yet (4)

Institutions that held Mirion Technologies, Inc. at the end of Q3 2024 and haven't filed a 13F for Q4 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MIR in Q3 2024 that haven't filed for Q4 2024
InstitutionShares, Q3 2024Value, Q3 2024
Eagle Asset Management Inc505,247$7.82M
AJOVista, LLC15,623$172.9K
PEAK6 Investments LLC10,778$119.3K
FinTrust Capital Advisors, LLC25$277