Skip to main content
Livermore
Livermore
ZHEN

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 2025 vs. Q4 2024

How the institutions holding Mirion Technologies, Inc. changed between Q4 2024 and Q1 2025.

All holders in Q1 2025All holders in Q4 2024

13F holders of MIR: Q4 2024 compared with Q1 2025
MeasureQ4 2024Of which not filed for Q1 2025Q1 2025Change
Holders2242230+8
Shares193.9M7.43M185.4M−1.13M (−0.6%)
Value$3.38B$129.7M$2.69B−$565.0M (−17.4%)

2 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (47)

Institutions that held Mirion Technologies, Inc. at the end of Q1 2025 but not at the end of Q4 2024.

Institutions new to MIR in Q1 2025
InstitutionSharesValue% of portfolio
Nuveen, LLC1,388,424$20.1M0.01%
Rockefeller Capital Management L.P.938,237$13.6M0.03%
Summit Partners Public Asset Management, LLC896,000$13.0M0.62%
Norges Bank602,500$8.74M0.00%
Bastion Asset Management Inc.326,580$4.89M2.63%
Dark Forest Capital Management LP151,996$2.20M0.10%
Aquatic Capital Management LLC97,996$1.42M0.04%
Sumitomo Mitsui DS Asset Management Company, Ltd87,721$1.27M0.01%
TT International Asset Management LTD62,346$904.0K0.14%
Vontobel Holding Ltd.59,895$868.5K0.00%
Jefferies Financial Group Inc.56,300$816.4K0.01%
Virginia Retirement Systems Et Al47,546$689.4K0.01%
Simplex Trading, LLC31,370$454.0K0.02%
Register Financial Advisors LLC29,300$424.9K0.22%
Universal- Beteiligungs- und Servicegesellschaft mbH24,189$350.7K0.00%
PDT Partners, LLC22,969$333.1K0.02%
Sumitomo Life Insurance Co22,676$328.8K0.01%
SG Americas Securities, LLC19,021$276.0K0.00%
Toroso Investments, LLC17,217$249.6K0.00%
Ieq Capital, LLC14,919$216.3K0.00%
Keybank National Association13,547$196.4K0.00%
Stifel Financial Corp12,859$186.5K0.00%
Two Sigma Securities, LLC11,427$165.7K0.03%
Sciencast Management LP10,508$152.4K0.04%
Corient IA LLC10,000$145.0K0.10%
BI Asset Management Fondsmaeglerselskab A/S4,676$68.0K0.00%
Clear Street Markets LLC1,659$24.1K0.02%
Versant Capital Management, Inc1,163$16.9K0.00%
First Horizon Advisors, Inc.642$9.31K0.00%
Rise Advisors, LLC579$8.40K0.00%
Hillsdale Investment Management Inc.430$6.24K0.00%
Sierra Ocean, LLC321$4.66K0.00%
Public Employees Retirement System of Ohio270$3.92K0.00%
Millstone Evans Group, LLC268$3.89K0.00%
Rothschild Investment LLC230$3.33K0.00%
Coldstream Capital Management Inc213$3.09K0.00%
Larson Financial Group LLC189$2.74K0.00%
Highline Wealth Partners LLC126$1.83K0.00%
Parkside Financial Bank & Trust120$1.74K0.00%
Russell Investments Group, Ltd.87$1.26K0.00%
Stephens Consulting, LLC75$1.09K0.00%
ORG Partners LLC90$8610.00%
Caitong International Asset Management Co., Ltd43$6240.00%
Signaturefd, LLC15$2180.00%
True Wealth Design, LLC12$1740.00%
HFM Investment Advisors, LLC6$870.00%
Bay Harbor Wealth Management, LLC4$580.00%

Sold out (39)

Institutions that held Mirion Technologies, Inc. at the end of Q4 2024 and filed for Q1 2025 without it.

Institutions that sold out of MIR in Q1 2025
InstitutionShares, Q4 2024Value, Q4 2024
Munro Partners1,122,215$19.6M
Greenhouse Funds LLLP700,623$12.2M
Ci Investments Inc.659,720$11.5M
Discovery Capital Management, LLC360,000$6.28M
Duquesne Family Office LLCSuperinvestorDuquesne Family Office342,700$5.98M
Walleye Trading LLC296,844$5.18M
EAM Global Investors LLC282,534$4.93M
Paradoxiom Capital L.P.280,335$4.89M
EAM Investors, LLC257,777$4.50M
Scopus Asset Management, L.P.246,060$4.29M
Bridgewater Associates, LP243,755$4.25M
Marshall Wace, LLP239,439$4.18M
Advantage Alpha Capital Partners LP235,565$4.11M
Yaupon Capital Management LP178,554$3.12M
Polar Asset Management Partners Inc.174,919$3.05M
M&T Bank Corp160,116$2.79M
Adage Capital Partners GP, L.L.C.140,958$2.46M
Nomura Holdings Inc97,824$1.71M
Bryce Point Capital, LLC95,998$1.68M
Wolverine Trading, LLC69,607$1.22M
Moore Capital Management, LP59,817$1.04M
Counterpoint Mutual Funds LLC44,022$768.2K
Group One Trading, L.P.43,240$754.5K
Susquehanna Fundamental Investments, LLC36,400$635.2K
Jain Global LLC25,665$447.9K
Occudo Quantitative Strategies LP22,566$393.8K
Y-Intercept (Hong Kong) Ltd22,551$393.5K
Gilder Gagnon Howe & Co LLC22,234$388.0K
Landscape Capital Management, L.L.C.11,960$208.7K
CI Private Wealth, LLC10,700$186.7K
SkyView Investment Advisors, LLC10,000$175.0K
Harvest Fund Management Co., Ltd6,858$120.0K
Aster Capital Management (DIFC) Ltd855$14.9K
SRS Capital Advisors, Inc.438$7.64K
Nelson, Van Denburg & Campbell Wealth Management Group, LLC202$3.52K
Parallax Volatility Advisers, L.P.120$2.09K
Steward Partners Investment Advisory, LLC100$1.75K
Neo Ivy Capital Management63$1.00K
FNY Investment Advisers, LLC10$0

Not filed for Q1 2025 yet (2)

Institutions that held Mirion Technologies, Inc. at the end of Q4 2024 and haven't filed a 13F for Q1 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MIR in Q4 2024 that haven't filed for Q1 2025
InstitutionShares, Q4 2024Value, Q4 2024
Swedbank AB6,060,500$105.8M
Nuveen Asset Management, LLC1,371,004$23.9M