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Mirion Technologies (MIR) Institutional Ownership

Mirion Technologies logo
$20.68 +0.07 (+0.33%)
Closing price 09/3/2025 03:59 PM Eastern
Extended Trading
$20.67 -0.01 (-0.03%)
As of 09/3/2025 06:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.
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Institutional Ownership Changes (13F Filings) for Mirion Technologies (NYSE:MIR)

Current
Institutional Ownership
Percentage
78.51%
Number of
Institutional Buyers
(last 12 months)
193
Total
Institutional Inflows
(last 12 months)
$1.07B
Number of
Institutional Sellers
(last 12 months)
80
Total
Institutional Outflows
(last 12 months)
$698.73M
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MIR Institutional Buying and Selling by Quarter

Mirion Technologies Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/2/2025 FSC Wealth Advisors LLC2,744$59K0.0%N/A0.001%
8/27/2025 Munro Partners121,875$2.62M0.1%N/A0.052%
8/19/2025 State of Wyoming6,233$134K0.0%-92.3%0.003%
8/18/2025 Nomura Holdings Inc.141,946$3.06M0.0%N/A0.061%
8/16/2025 FORA Capital LLC58,903$1.27M0.1%N/A0.025%
8/15/2025 Tower Research Capital LLC TRC 39,878$859K0.0%+613.9%0.017%
8/15/2025 Captrust Financial Advisors10,204$220K0.0%N/A0.004%
8/15/2025 Tidal Investments LLC21,274$458K0.0%+23.6%0.009%
8/15/2025 Select Equity Group L.P.2,027,559$43.65M0.2%-11.5%0.867%
8/15/2025 Smartleaf Asset Management LLC6,146$133K0.0%+18.1%0.003%
8/15/2025 Sandler Capital Management89,356$1.92M0.5%-50.8%0.038%
8/15/2025 Moore Capital Management LP407,413$8.77M0.1%N/A0.174%
8/15/2025 Lazard Asset Management LLC218,031$4.69M0.0%+13.7%0.093%
8/15/2025 Fortress Investment Group LLC1,506$32K0.0%N/A0.001%
8/15/2025 BNP Paribas Financial Markets148,395$3.20M0.0%+1,003.6%0.063%
8/15/2025 Boothbay Fund Management LLC95,790$2.06M0.0%N/A0.041%
8/15/2025 Brevan Howard Capital Management LP32,925$709K0.0%N/A0.014%
8/15/2025 Balyasny Asset Management L.P.167,245$3.60M0.0%+2.0%0.071%
8/15/2025 Bank of America Corp DE1,383,213$29.78M0.0%+135.0%0.591%
8/15/2025 Ameriprise Financial Inc.260,205$5.60M0.0%+133.1%0.111%
8/15/2025 AQR Capital Management LLC312,260$6.72M0.0%+56.7%0.133%
8/14/2025 TENOR CAPITAL MANAGEMENT Co. L.P.42,998$926K0.0%N/A0.018%
8/14/2025 California State Teachers Retirement System203,402$4.38M0.0%+14.7%0.087%
8/14/2025 Raymond James Financial Inc.1,972,536$42.47M0.0%+14.8%0.843%
8/14/2025 Maverick Capital Ltd.5,308,038$114.28M1.7%-36.8%2.269%
8/14/2025 Soros Fund Management LLC71,700$1.54M0.0%N/A0.031%
8/14/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.115,332$2.48M0.0%-6.2%0.049%
8/14/2025 The Manufacturers Life Insurance Company 111,723$2.41M0.0%-4.9%0.048%
8/14/2025 Sei Investments Co.351,039$7.56M0.0%+127.2%0.150%
8/14/2025 Ardsley Advisory Partners LP463,220$9.97M1.3%+164.7%0.198%
8/14/2025 Aperture Investors LLC345,000$7.43M1.0%-3.5%0.147%
8/14/2025 Qube Research & Technologies Ltd463,977$9.99M0.0%-28.6%0.198%
8/14/2025 State Street Corp5,094,072$109.68M0.0%-0.9%2.177%
8/14/2025 Daiwa Securities Group Inc.75,700$1.63M0.0%N/A0.032%
8/14/2025 Hood River Capital Management LLC1,470,273$31.66M0.4%N/A0.628%
8/14/2025 Cerity Partners LLC11,731$253K0.0%N/A0.005%
8/13/2025 Gabelli Funds LLC511,314$11.01M0.1%-2.5%0.219%
8/13/2025 Gamco Investors INC. ET AL562,074$12.10M0.1%-5.1%0.240%
8/13/2025 Bosun Asset Management LLC38,191$822K0.2%+47.3%0.016%
8/13/2025 Cresset Asset Management LLC42,500$915K0.0%-27.4%0.018%
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8/13/2025 Brown Advisory Inc.5,400,405$116.27M0.2%-2.9%2.308%
8/13/2025 Baird Financial Group Inc.12,559$270K0.0%N/A0.005%
8/13/2025 Walleye Capital LLC81,997$1.77M0.0%-71.4%0.035%
8/13/2025 First Trust Advisors LP190,035$4.09M0.0%-40.1%0.081%
8/13/2025 EverSource Wealth Advisors LLC1,642$35K0.0%+470.1%0.001%
8/13/2025 Invesco Ltd.2,617,252$56.35M0.0%+713.2%1.119%
8/13/2025 Arrowstreet Capital Limited Partnership2,281,180$49.11M0.0%-18.2%0.975%
8/13/2025 HBK Investments L P42,998$926K0.0%N/A0.018%
8/13/2025 New York State Common Retirement Fund133,181$2.87M0.0%+13.8%0.057%
8/13/2025 Schroder Investment Management Group1,120,605$24.13M0.0%-0.2%0.479%
8/13/2025 Loomis Sayles & Co. L P1,591,688$34.27M0.0%N/A0.680%
8/13/2025 Hsbc Holdings PLC20,426$443K0.0%-14.8%0.009%
8/13/2025 Corsair Capital Management L.P.3,025,412$65.14M12.5%-1.5%1.293%
8/13/2025 Groupama Asset Managment800,000$17.22M0.1%N/A0.342%
8/12/2025 Ameritas Investment Partners Inc.21,455$462K0.0%+2.7%0.009%
8/12/2025 Prudential Financial Inc.27,010$582K0.0%+69.4%0.012%
8/12/2025 American Century Companies Inc.3,373,352$72.63M0.0%-1.7%1.442%
8/12/2025 Segall Bryant & Hamill LLC1,089,217$23.45M0.3%+53.1%0.466%
8/12/2025 Rhumbline Advisers318,602$6.86M0.0%+3.6%0.136%
8/12/2025 AXQ Capital LP26,654$574K0.2%N/A0.011%
8/12/2025 Franklin Resources Inc.668,159$14.39M0.0%N/A0.286%
8/12/2025 Legal & General Group Plc242,824$5.23M0.0%+3.9%0.104%
8/12/2025 Neo Ivy Capital Management132,188$2.85M0.9%N/A0.056%
8/12/2025 JPMorgan Chase & Co.825,269$17.77M0.0%+187.2%0.353%
8/12/2025 Swiss National Bank408,800$8.80M0.0%+4.0%0.175%
8/12/2025 Highbridge Capital Management LLC57,352$1.24M0.1%N/A0.025%
8/12/2025 Ensign Peak Advisors Inc601,248$12.95M0.0%+21.2%0.257%
8/11/2025 FSC Wealth Advisors LLC2,744$59K0.0%N/A0.001%
8/11/2025 Universal Beteiligungs und Servicegesellschaft mbH240,549$5.18M0.0%+894.5%0.104%
8/8/2025 Rockefeller Capital Management L.P.25,395$547K0.0%-97.3%0.011%
8/8/2025 Cetera Investment Advisers13,398$288K0.0%N/A0.006%
8/8/2025 Creative Planning104,996$2.26M0.0%+83.1%0.045%
8/8/2025 Calamos Advisors LLC44,400$956K0.0%N/A0.019%
8/8/2025 Police & Firemen s Retirement System of New Jersey47,951$1.03M0.0%+8.7%0.021%
8/8/2025 Bailard Inc.17,748$382K0.0%N/A0.008%
8/8/2025 Geode Capital Management LLC4,739,240$102.05M0.0%+0.0%2.043%
8/8/2025 PNC Financial Services Group Inc.16,812$362K0.0%-26.6%0.007%
8/8/2025 KBC Group NV6,348$137K0.0%-39.5%0.003%
8/7/2025 Robeco Schweiz AG230,000$4.95M0.1%N/A0.099%
8/7/2025 ProShare Advisors LLC43,091$928K0.0%-3.6%0.019%
8/7/2025 Bornite Capital Management LP2,051,700$44.17M4.4%-0.6%0.885%
8/7/2025 Connor Clark & Lunn Investment Management Ltd.102,225$2.20M0.0%N/A0.044%
8/6/2025 Summit Investment Advisors Inc.20,898$303K0.2%-3.3%0.009%
8/6/2025 Savant Capital LLC22,329$481K0.0%N/A0.010%
8/5/2025 Bank of Montreal Can65,640$1.41M0.0%N/A0.028%
8/5/2025 Sumitomo Life Insurance Co.64,495$1.39M0.1%+184.4%0.028%
8/5/2025 Pier Capital LLC871,028$18.75M2.9%-7.5%0.376%
8/4/2025 Wolverine Asset Management LLC89,452$1.93M0.0%+86.4%0.039%
8/4/2025 Simon Quick Advisors LLC25,300$545K0.0%+2.4%0.011%
8/4/2025 Strs Ohio62,100$1.34M0.0%+221.8%0.027%
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8/4/2025 Emerald Mutual Fund Advisers Trust553,624$11.92M0.7%+9.2%0.239%
8/4/2025 Emerald Advisers LLC965,245$20.78M0.8%+9.7%0.416%
8/1/2025 Jennison Associates LLC1,072,089$23.08M0.0%+15.0%0.462%
8/1/2025 Teacher Retirement System of Texas32,341$696K0.0%+9.4%0.014%
8/1/2025 Y Intercept Hong Kong Ltd71,014$1.53M0.0%N/A0.031%
8/1/2025 Envestnet Asset Management Inc.232,996$5.02M0.0%+30.9%0.100%
7/31/2025 Nisa Investment Advisors LLC3,366$72K0.0%+24.0%0.001%
7/31/2025 State of New Jersey Common Pension Fund D105,811$2.28M0.0%-16.5%0.046%
7/30/2025 Ethic Inc.9,945$216K0.0%N/A0.004%
7/30/2025 Cookson Peirce & Co. Inc.20,000$431K0.0%N/A0.009%
(Data available from 1/1/2016 forward)

MIR Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of MIR shares?

During the previous two years, 240 institutional investors and hedge funds held shares of Mirion Technologies. The most heavily invested institutionals were Vanguard Group Inc. ($337.24M), T. Rowe Price Investment Management Inc. ($300.30M), Janus Henderson Group PLC ($145.37M), Brown Advisory Inc. ($116.27M), Maverick Capital Ltd. ($114.28M), State Street Corp ($109.68M), and Dimensional Fund Advisors LP ($106.78M).Learn more on Mirion Technologies' institutional investors.

What percentage of Mirion Technologies' stock is owned by institutional investors?

78.51% of Mirion Technologies' stock is owned by institutional investors. Learn more on MIR's institutional investor holdings.

Which institutional investors have been buying Mirion Technologies' stock?

Of the 219 institutional investors that purchased Mirion Technologies' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Swedbank AB ($10.78M), Brown Advisory Inc. ($5.56M), Arrowstreet Capital Limited Partnership ($4.20M), American Century Companies Inc. ($3.04M), William Blair Investment Management LLC ($3.04M), Artemis Investment Management LLP ($3.00M), and Raymond James Financial Inc. ($2.96M).

How much institutional buying is happening at Mirion Technologies?

Institutional investors have bought a total of 62,050,041 shares in the last 24 months. This purchase volume represents approximately $1.07B in transactions.

Which of Mirion Technologies' major shareholders have been selling company stock?

Of the 80 institutional investors that sold Mirion Technologies' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Goldman Sachs Group Inc. ($8.30M), Swedbank AB ($6.42M), Alyeska Investment Group L.P. ($4.06M), Adage Capital Partners GP L.L.C. ($3.48M), Maverick Capital Ltd. ($3.09M), Select Equity Group L.P. ($2.29M), and First Manhattan CO. LLC. ($1.63M).

How much institutional selling is happening at Mirion Technologies?

Institutional investors have sold a total of 40,558,859 shares in the last 24 months. This volume of shares sold represents approximately $698.73M in transactions.


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This page (NYSE:MIR) was last updated on 9/4/2025 by MarketBeat.com Staff
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