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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.

Q2 2025 vs. Q1 2025

How the institutions holding Mirion Technologies, Inc. changed between Q1 2025 and Q2 2025.

All holders in Q2 2025All holders in Q1 2025

13F holders of MIR: Q1 2025 compared with Q2 2025
MeasureQ1 2025Of which not filed for Q2 2025Q2 2025Change
Holders2301302+73
Shares185.4M253207.4M+22.0M (+11.9%)
Value$2.69B$3.67K$4.46B+$1.78B (+66.0%)

1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (103)

Institutions that held Mirion Technologies, Inc. at the end of Q2 2025 but not at the end of Q1 2025.

Showing the largest 100 of 103 by value.

Institutions new to MIR in Q2 2025
InstitutionSharesValue% of portfolio
Swedbank AB4,126,035$88.8M0.10%
Massachusetts Financial Services Co3,833,668$82.5M0.03%
Driehaus Capital Management LLC2,007,888$43.2M0.35%
Loomis Sayles & Co L P1,591,688$34.3M0.04%
Hood River Capital Management LLC1,470,273$31.7M0.44%
TCW Group Inc731,465$15.7M0.12%
Franklin Resources Inc668,159$14.4M0.00%
Troluce Capital Advisors LLC600,000$12.9M6.58%
Shannon River Fund Management LLC555,377$12.0M1.84%
Concentric Capital Strategies, LP412,460$8.88M0.50%
Moore Capital Management, LP407,413$8.77M0.18%
Axiom Investors LLC392,685$8.45M0.07%
Zacks Investment Management379,461$8.17M0.07%
Sona Asset Management (US) LLC314,000$6.76M0.23%
EAM Global Investors LLC236,179$5.08M1.32%
Robeco Schweiz AG230,000$4.95M0.11%
EAM Investors, LLC208,974$4.50M0.68%
Candelo Capital Management LP203,161$4.37M4.19%
Jain Global LLC162,968$3.51M0.05%
SummitTX Capital, L.P.150,000$3.23M0.14%
Nomura Holdings Inc141,946$3.06M0.02%
Neo Ivy Capital Management132,188$2.85M0.91%
Munro Partners121,875$2.62M0.08%
Polar Asset Management Partners Inc.107,498$2.31M0.06%
Capstone Investment Advisors, LLC104,350$2.25M0.02%
Connor, Clark & Lunn Investment Management Ltd.102,225$2.20M0.01%
Centiva Capital, LP96,267$2.07M0.14%
Boothbay Fund Management, LLC95,790$2.06M0.06%
Susquehanna Advisors Group, Inc.91,689$1.97M0.08%
Aristeia Capital LLC86,002$1.85M0.05%
Daiwa Securities Group Inc.75,700$1.63M0.01%
Jackson Creek Investment Advisors LLC74,000$1.59M0.43%
Soros Fund Management LLCSuperinvestorSoros Fund Management71,700$1.54M0.03%
Y-Intercept (Hong Kong) Ltd71,014$1.53M0.04%
Weiss Asset Management LP66,910$1.44M0.02%
Bank of Montreal65,640$1.41M0.00%
FORA Capital, LLC58,903$1.27M0.14%
Highbridge Capital Management LLC57,352$1.23M0.06%
Steelhead Partners LLC57,352$1.23M0.06%
Polen Capital Management LLC57,230$1.23M0.00%
Blackhawk Capital Partners LLC.52,893$1.14M0.53%
Ci Investments Inc.52,865$1.14M0.00%
Calamos Advisors LLC44,400$955.9K0.00%
Groupama Asset Managment–$932.4K0.02%
HBK Investments L P42,998$925.7K0.02%
Tenor Capital Management Co., L.P.42,998$925.7K0.01%
Twin Tree Management, LP39,581$852.2K0.02%
Brevan Howard Capital Management LP32,925$708.9K0.01%
Two Sigma Investments, LP28,650$616.8K0.00%
Public Employees Retirement Association of Colorado28,338$610.0K0.00%
CSS LLC28,070$604.3K0.04%
Axq Capital, LP26,654$573.9K0.19%
Janney Montgomery Scott LLC22,439$483.0K0.00%
Cookson Peirce & Co Inc20,000$430.6K0.02%
Premier Fund Managers Ltd18,934$411.0K0.01%
Aigen Investment Management, LP18,596$400.4K0.05%
Bailard, Inc.17,748$382.1K0.01%
Wealth Enhancement Advisory Services, LLC17,547$363.4K0.00%
Wolverine Trading, LLC15,011$325.9K0.01%
Gotham Asset Management, LLC13,603$292.9K0.00%
MML Investors Services, LLC13,448$290.0K0.00%
Cetera Investment Advisers13,398$288.5K0.00%
Baird Financial Group, Inc.12,559$270.4K0.00%
Cerity Partners LLC11,731$252.6K0.00%
Captrust Financial Advisors10,204$219.7K0.00%
Zevenbergen Capital Investments LLC10,200$219.6K0.00%
Ethic Inc.9,945$215.9K0.00%
NBC Securities, Inc.9,804$211.0K0.02%
Altshuler Shaham Ltd9,519$204.9K0.01%
Forum Financial Management, LP9,315$200.6K0.00%
Walleye Trading LLC9,173$197.5K0.00%
BNP PARIBAS ASSET MANAGEMENT Holding S.A.2,264$49.0K0.00%
Skopos Labs, Inc.1,655$35.6K0.00%
Fortress Investment Group LLC1,506$32.4K0.00%
Global Retirement Partners, LLC1,500$32.3K0.00%
REAP Financial Group, LLC1,093$23.5K0.01%
Essential Partners LLC971$20.9K0.01%
University of Texas/Texas Am Investment Managment Co952$20.5K0.00%
Danske Bank A/S900$19.4K0.00%
Raleigh Capital Management Inc.888$19.1K0.01%
Banque Cantonale Vaudoise594$13.0K0.00%
Annis Gardner Whiting Capital Advisors, LLC546$11.8K0.00%
SRS Capital Advisors, Inc.497$10.7K0.00%
Principal Securities, Inc.480$10.3K0.00%
WPG Advisers, LLC463$9.97K0.01%
CoreCap Advisors, LLC356$7.67K0.00%
Private Trust Co NA227$4.89K0.00%
Harbour Investments, Inc.207$4.46K0.00%
Geneos Wealth Management Inc.149$3.21K0.00%
Bryn Mawr Trust Co143$3.08K0.00%
Jones Financial Companies LLLP100$2.17K0.00%
Mount Yale Investment Advisors, LLC100$2.15K0.00%
Toth Financial Advisory Corp85$1.83K0.00%
Cullen/Frost Bankers, Inc.79$1.70K0.00%
Bare Financial Services, Inc58$1.25K0.00%
Fortitude Family Office, LLC52$1.12K0.00%
DecisionPoint Financial, LLC47$9650.00%
Steward Partners Investment Advisory, LLC37$7970.00%
UMA Financial Services, Inc.29$6250.00%
Assetmark, Inc28$6030.00%

Sold out (30)

Institutions that held Mirion Technologies, Inc. at the end of Q1 2025 and filed for Q2 2025 without it.

Institutions that sold out of MIR in Q2 2025
InstitutionShares, Q1 2025Value, Q1 2025
Masters Capital Management LLC1,000,000$14.5M
Norges Bank602,500$8.74M
Trexquant Investment LP567,609$8.23M
Tudor Investment Corp Et Al430,949$6.25M
Bastion Asset Management Inc.326,580$4.89M
Alberta Investment Management Corp180,520$2.62M
Dark Forest Capital Management LP151,996$2.20M
HRT Financial LP145,133$2.10M
Squarepoint Ops LLC107,363$1.56M
Corebridge Financial, Inc.101,203$1.47M
Aquatic Capital Management LLC97,996$1.42M
First Manhattan Co76,932$1.12M
XTX Topco Ltd69,269$1.00M
Virginia Retirement Systems Et Al47,546$689.4K
Engineers Gate Manager LP34,303$497.4K
Campbell & CO Investment Adviser LLC33,425$484.7K
PDT Partners, LLC22,969$333.1K
Diametric Capital, LP13,679$198.3K
Two Sigma Securities, LLC11,427$165.7K
Sciencast Management LP10,508$152.4K
BI Asset Management Fondsmaeglerselskab A/S4,676$68.0K
Quadrant Capital Group LLC817$11.8K
Optiver Holding B.V.736$10.7K
Global Financial Private Client, LLC494$7.16K
Sierra Ocean, LLC321$4.66K
Millstone Evans Group, LLC268$3.89K
Coldstream Capital Management Inc213$3.09K
Amundi133$1.81K
Stephens Consulting, LLC75$1.09K
Caitong International Asset Management Co., Ltd43$624

Not filed for Q2 2025 yet (1)

Institutions that held Mirion Technologies, Inc. at the end of Q1 2025 and haven't filed a 13F for Q2 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MIR in Q1 2025 that haven't filed for Q2 2025
InstitutionShares, Q1 2025Value, Q1 2025
Lindbrook Capital, LLC253$3.67K