13F

Stock

Mirion Technologies, Inc.

MIR · held by 360 managers

Reported value

$4.4B

Holders

360

+54 new · −58 exited

Holders’ est. mark

−$843.9M

Price effect on 206 books still in the name

Largest holder

$703.8M

BlackRock, Inc.

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
BlackRock, Inc.37.9M$703.8M−$182.9MCut−$190.9M
VANGUARD PORTFOLIO MANAGEMENT LLC17.9M$332.9MHeld
VANGUARD CAPITAL MANAGEMENT LLC10.5M$195.3MHeld
State Street9.43M$175.3M−$44.4MCut−$40.1M
COOPERMAN LEON G8.38M$155.8M−$40.5MCut−$40.5M
GOLDMAN SACHS GROUP INC7.35M$136.6M−$25.4MAdded$13.7M
Fidelity6.55M$121.8M−$31.6MCut−$75.3M
GEODE CAPITAL MANAGEMENT, LLC5.94M$110.4M−$28MCut−$25.1M
MILLENNIUM MANAGEMENT LLC5.11M$94.9MNew
DIMENSIONAL FUND ADVISORS LP4.69M$87.2M−$19.8MCut−$8.85M
Bank of New York Mellon Corp4.54M$84.3M−$14.9MAdded$12.3M
JANUS HENDERSON GROUP PLC4.04M$75.2M−$19.5MCut−$32.5M
UBS Group AG3.77M$70M−$18.2MCut−$43.6M
Swedbank AB3.16M$58.7M−$15.3MCut−$20.8M
AMERICAN CENTURY COMPANIES INC2.73M$50.8M−$12.3MCut−$9.08M
Alyeska Investment Group, L.P.2.7M$50.2M−$7.4MAdded$14.4M
LOOMIS SAYLES & CO L P2.67M$49.6M−$12.9MCut−$17M
MAVERICK CAPITAL LTD2.65M$49.3MNew
Two Creeks Capital Management, LP2.45M$45.5M−$11.8MCut−$22.9M
JPMORGAN CHASE & CO2.62M$45.4M−$10.2MAdded$6.25M
NORTHERN TRUST CORP2.37M$44M−$11.3MCut−$10.6M
Invesco Ltd.2.29M$42.7M−$11.1MCut−$30M
MORGAN STANLEY2.29M$42.5M−$10.1MCut−$6.63M
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2.28M$42.3M−$11MCut−$12.6M
TCW GROUP INC2.24M$41.6M−$10.8MCut−$15.8M
ALLIANCEBERNSTEIN L.P.1.65M$38.7M−$0Added$31.2M
FRANKLIN RESOURCES INC2M$37.1M−$9.07MCut−$6.85M
ROYAL BANK OF CANADA1.96M$36.5M−$9.47MCut−$13.8M
Nuveen, LLC1.95M$36.3M−$9.42MCut−$10.9M
Conestoga Capital Advisors, LLC1.83M$34M−$8.84MCut−$11.4M
Citadel1.82M$33.9M−$7.83MCut−$4.06M
VANGUARD FIDUCIARY TRUST CO1.69M$31.5MHeld
Chescapmanager LLC1.66M$30.8M−$8.01MCut−$8.01M
MASSACHUSETTS FINANCIAL SERVICES CO /MA/1.59M$29.5M−$7.68MCut−$56.3M
Troluce Capital Advisors LLC1.5M$27.9M−$4.11MAdded$7.98M
Rockefeller Capital Management L.P.1.39M$25.9M−$5.5MCut−$785.5K
EMERALD ADVISERS, LLC1.38M$25.7M−$5.49MCut−$948.5K
Stephens Investment Management Group LLC1.37M$25.6M−$3.91MAdded$6.59M
BANK OF AMERICA CORP /DE/1.36M$25.2M−$6.55MCut−$6.63M
Davidson Kempner Capital Management LP1.31M$24.4M−$4.48MAdded$2.7M
BROWN ADVISORY INC1.3M$24.2M−$6.28MCut−$13.6M
TimesSquare Capital Management, LLC1.29M$24.1M−$4.67MAdded$1.41M
AMERIPRISE FINANCIAL INC1.29M$24M−$6.23MCut−$30.7M
Daiwa Securities Group Inc.1.22M$22.6M$872.6KAdded$22.6M
BAMCO INC /NY/1.21M$22.6M−$3.14MAdded$7.34M
PRINCIPAL FINANCIAL GROUP INC1.2M$22.2M−$5.78MCut−$17.8M
VOYA INVESTMENT MANAGEMENT LLC1.17M$21.7M−$4.25MAdded$1.11M
CONGRESS ASSET MANAGEMENT CO1.11M$20.7MNew
SEGALL BRYANT & HAMILL, LLC1.11M$20.7M−$5.37MCut−$6.72M
BNP PARIBAS FINANCIAL MARKETS1.11M$20.7M−$4.37MCut−$516.2K
Allspring Global Investments Holdings, LLC1.06M$19.8M−$5.33MCut−$4.79M
SCHRODER INVESTMENT MANAGEMENT GROUP1.14M$19.7M−$6.45MCut−$4.29M
Select Equity Group, L.P.1.06M$19.6M−$3.71MAdded$1.61M
CITIGROUP INC1.05M$19.5M−$1.83MAdded$10.6M
RAYMOND JAMES FINANCIAL INC1.08M$18.9M−$6.48MCut−$17.3M
CORSAIR CAPITAL MANAGEMENT, L.P.982.4K$18.3M−$4.75MCut−$4.75M
Alta Park Capital, LP977.1K$18.2M−$2.72MAdded$4.99M
JENNISON ASSOCIATES LLC942.7K$17.5M−$4.55MCut−$5.72M
FRED ALGER MANAGEMENT, LLC909.6K$16.9MNew
PUBLIC SECTOR PENSION INVESTMENT BOARD875.3K$16.3M−$4.14MCut−$3.82M
EMERALD MUTUAL FUND ADVISERS TRUST873.5K$16.2M−$3.4MCut−$261.6K
NEUBERGER BERMAN GROUP LLC856.4K$15.9M−$2.74MAdded$2.63M
SCHWARTZ INVESTMENT COUNSEL INC854.3K$15.9M−$3.84MCut−$2.72M
WELLINGTON MANAGEMENT GROUP LLP837.8K$15.6M−$1.2MAdded$9.75M
FEDERATED HERMES, INC.816.4K$15.2M−$3.94MCut−$4.7M
Tidal Investments LLC775K$14.4M−$1.95MAdded$4.97M
NOMURA HOLDINGS INC764.6K$14.2M−$3.67MCut−$3.6M
OBERWEIS ASSET MANAGEMENT INC/744.3K$13.8M−$2.94MCut−$398.8K
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.727.3K$13.5M−$3.51MCut−$6.5M
Pier Capital, LLC703.8K$13.1M−$3.4MCut−$3.72M
SILVERCREST ASSET MANAGEMENT GROUP LLC680.4K$12.6M−$3.29MCut−$6.52M
WELLS FARGO & COMPANY/MN678.4K$12.6M−$3.28MCut−$7.77M
RHUMBLINE ADVISERS634.4K$11.8M−$2.99MCut−$2.71M
Ensign Peak Advisors, Inc631.4K$11.7M−$3.05MCut−$3.48M
DEUTSCHE BANK AG\613K$11.4M−$2.79MCut−$2.15M
ArrowMark Colorado Holdings LLC575.2K$10.7M−$2.78MCut−$6.08M
Legal & General Group Plc555.9K$10.3M−$2.69MCut−$3.95M
GAMCO INVESTORS, INC. ET AL544.7K$10.1M−$2.62MCut−$2.57M
Artemis Investment Management LLP539.1K$10M−$2.6MCut−$36.2M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC507.2K$9.43M−$2.14MCut−$966K
AXIOM INVESTORS LLC /DE472K$8.78M−$2.28MCut−$8.12M
D. E. Shaw & Co., Inc.468.1K$8.7M−$2.26MCut−$6.03M
Swiss National Bank465.9K$8.66M−$2.24MCut−$2.21M
PEREGRINE CAPITAL MANAGEMENT LLC462.4K$8.6M−$1.95MCut−$845.5K
SEI INVESTMENTS CO458.4K$8.52M−$2.2MCut−$2.17M
Aberdeen Group plc456.5K$8.49MNew
ROYCE & ASSOCIATES LP451.8K$8.4M−$1.42MAdded$1.51M
EXCHANGE TRADED CONCEPTS, LLC407K$7.57M−$1.42MAdded$685.3K
Bastion Asset Management Inc.389.2K$7.29MNew
ZACKS INVESTMENT MANAGEMENT388.9K$7.23M−$1.88MCut−$2.19M
BANK OF NOVA SCOTIA380.2K$7.07M−$1.84MCut−$2.09M
MIROVA368.4K$6.85MNew
GABELLI FUNDS LLC368K$6.84M−$1.78MCut−$3.24M
Sumitomo Mitsui DS Asset Management Company, Ltd363.6K$6.76M−$1.76MCut−$2.6M
Bridgewater351.8K$6.54M−$1.7MCut−$4.93M
BURKEHILL GLOBAL MANAGEMENT, LP350K$6.51M−$1.69MCut−$1.69M
TD Asset Management Inc348.1K$6.47M−$1.68MCut−$1.68M
ENVESTNET ASSET MANAGEMENT INC338.7K$6.3M−$1.2MAdded$492.7K
ZEVENBERGEN CAPITAL INVESTMENTS LLC326.3K$6.07M−$1.07MAdded$883.1K
ARDSLEY ADVISORY PARTNERS LP325K$6.04M−$1.57MCut−$1.57M
LAZARD ASSET MANAGEMENT LLC322.4K$5.99M−$691KAdded$2.64M
Summit Creek Advisors LLC315.9K$5.87MNew
ESSEX INVESTMENT MANAGEMENT CO LLC309.1K$5.75M−$1.47MCut−$1.36M
Montanaro Asset Management Ltd305.3K$5.68M−$1.23MCut−$305.9K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM274.1K$5.1M−$1.08MCut−$158.7K
Walleye Capital LLC273K$5.07M−$1.15MCut−$505.6K
Icahn Capital269.1K$5M−$1.3MCut−$1.5M
Connor, Clark & Lunn Investment Management Ltd.266.1K$4.95M−$342.5KAdded$3.29M
PRUDENTIAL FINANCIAL INC249.5K$4.64M−$1.12MCut−$778.1K
STATE OF WISCONSIN INVESTMENT BOARD242.8K$4.51M−$1.09MCut−$791.6K
Robeco Schweiz AG230K$4.28M−$1.11MCut−$1.11M
FIFTH THIRD BANCORP227.1K$4.22M−$5.45KAdded$4.2M
RICE HALL JAMES & ASSOCIATES, LLC196.9K$3.66M−$951KCut−$1.02M
OSAIC HOLDINGS, INC.185K$3.44M−$15.8KAdded$3.36M
VANGUARD ASSET MANAGEMENT, Ltd178.6K$3.32MHeld
KORNITZER CAPITAL MANAGEMENT INC /KS174.7K$3.25MNew
Point72 Asset Management, L.P.174.3K$3.24MNew
Hollow Brook Wealth Management LLC172K$3.2M−$828.7KCut−$820.8K
SUSQUEHANNA INTERNATIONAL GROUP, LLP161.3K$3MNew
TEMA ETFS LLC155.7K$2.9M−$507KAdded$437K
VICTORY CAPITAL MANAGEMENT INC152K$2.83M−$734KCut−$6.68M
Aperture Investors, LLC151.7K$2.82M−$732.6KCut−$732.6K
FIRST TRUST ADVISORS LP147K$2.73M−$710KCut−$5.42M
BOOTHBAY FUND MANAGEMENT, LLC143.7K$2.67M−$693.9KCut−$1.4M
DDD Partners, LLC142.8K$2.65M−$304.5KAdded$1.18M
Creative Planning139.3K$2.59M−$672.6KCut−$1.01M
Pathstone Holdings, LLC132.1K$2.46M−$638.2KCut−$1.2M
MetLife Investment Management, LLC131K$2.44M−$632.7KCut−$656.6K
UniSuper Management Pty Ltd129.5K$2.41M−$625.5KCut−$625.5K
Illinois Municipal Retirement Fund126.3K$2.35M−$610.2KCut−$864.9K
Madison Asset Management, LLC124.3K$2.31M−$273.6KAdded$984.6K
KENNEDY CAPITAL MANAGEMENT LLC123.6K$2.3M−$596.8KCut−$632.2K
Qube Research & Technologies Ltd123.5K$2.3MNew
Covea Finance119.2K$2.22MNew
LPL Financial LLC114.1K$2.12M−$551.1KCut−$589K
FIRST NATIONAL BANK OF OMAHA113.5K$2.11M−$535.4KCut−$485.8K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.112.4K$2.09M−$538KCut−$518.8K
MANUFACTURERS LIFE INSURANCE COMPANY, THE111.7K$2.08M−$539.3KCut−$630.2K
Zurcher Kantonalbank (Zurich Cantonalbank)108.6K$2.02M−$404.6KAdded$57K
Louisiana State Employees Retirement System108.5K$2.02M−$524.1KCut−$641.2K
State of New Jersey Common Pension Fund D104.7K$1.95M−$436.6KCut−$169.8K
First National Advisers, LLC104.7K$1.95M−$504.7KCut−$657.4K
Register Financial Advisors LLC103.7K$1.93M−$355.7KAdded$202K
Vanguard Global Advisers, LLC103.1K$1.92MHeld
FIL Ltd100K$1.86M−$483KCut−$483K
Legato Capital Management LLC97.4K$1.81M−$470.3KCut−$4.67M
SCOTIA CAPITAL INC.94.7K$1.76MNew
Curi Capital, LLC88.4K$1.64MNew
Holocene Advisors, LP85.1K$1.58MNew
Dana Investment Advisors, Inc.83.1K$1.55MNew
Universal- Beteiligungs- und Servicegesellschaft mbH79.8K$1.48M−$385.5KCut−$6.15M
LBP AM SA78.2K$1.45M−$179.1KAdded$585.9K
SUMITOMO LIFE INSURANCE CO76.6K$1.42M−$370KCut−$493.9K
CAPSTONE INVESTMENT ADVISORS, LLC75.7K$1.41M−$365.6KCut−$365.6K
NEW YORK STATE COMMON RETIREMENT FUND74.8K$1.39M−$361.2KCut−$2.72M
INTECH INVESTMENT MANAGEMENT LLC72.4K$1.35M−$349.8KCut−$1.24M
Russell Investments Group, Ltd.67.7K$1.26M−$106.6KAdded$740.7K
STIFEL FINANCIAL CORP66.7K$1.24M−$285.4KCut−$144.5K
YOUSIF CAPITAL MANAGEMENT, LLC65.9K$1.23M−$505.4KCut−$533.3K
Police & Firemen's Retirement System of New Jersey65.3K$1.21M−$308KCut−$278.9K
Tribune Investment Group LP65K$1.21MNew
ARIZONA STATE RETIREMENT SYSTEM64.6K$1.2M−$312.2KCut−$331.9K
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS60.5K$1.12M−$292.2KCut−$312.1K
Vanguard Investments Australia, Ltd.59K$1.1MHeld
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM57.2K$1.06M−$276.3KCut−$276.3K
OREGON PUBLIC EMPLOYEES RETIREMENT FUND55.9K$1.04M−$270KCut−$288.7K
State of Tennessee, Department of Treasury55.5K$1.03M−$347.1KCut−$818.1K
Asset Management One Co., Ltd.55.7K$1.03MNew
KLP KAPITALFORVALTNING AS52K$966.7K−$242.5KCut−$209K
THORNBURG INVESTMENT MANAGEMENT INC51.6K$959.2K−$249.2KCut−$4.34M
PEAK6 LLC50.9K$946.9K−$33.7KAdded$783.6K
1832 Asset Management L.P.50K$929.5K−$241.5KCut−$241.5K
Nicholas Investment Partners, LP49.3K$916.1K−$238KCut−$14.1M
Hudson Bay Capital Management LP46.3K$860.2K−$193.2KCut−$76.6K
Neo Ivy Capital Management44.6K$829.2KNew
BARCLAYS PLC43.8K$814.1K−$211.5KCut−$7.95M
Cresset Asset Management, LLC42.6K$791.1K−$205.3KCut−$204.2K
Blackstone Inc.42.4K$788.5KNew
Quantinno Capital Management LP41.7K$775.3K−$54.5KAdded$511K
OPPENHEIMER & CO INC41.6K$773.6K−$164.1KCut−$22.2K
Themes Management Co LLC38.8K$722K−$119.5KAdded$142.6K
Entropy Technologies, LP38.5K$715.8KNew
Sterling Capital Management LLC38.2K$710.8K−$184.7KCut−$900.5K
Twin Tree Management, LP38.1K$707.8K−$121.4KAdded$119.2K
ProShare Advisors LLC37.4K$694.7K−$180.5KCut−$399.7K
XTX Topco Ltd37.2K$691.1K−$179.6KCut−$2.24M
Amundi36.7K$682.1K−$59.4KAdded$394K
Maryland State Retirement & Pension System35.6K$662.3K−$172.1KCut−$187.4K
Pictet Asset Management Holding SA35.5K$659.8K−$161.3KCut−$122.3K
TRUIST FINANCIAL CORP31.1K$578.1K−$150.2KCut−$214.8K
Vontobel Holding Ltd.29.9K$555.7K−$97KAdded$85.4K
Sanctuary Advisors, LLC29.6K$550.6K−$143.1KCut−$156.3K
CAPTRUST FINANCIAL ADVISORS28.6K$532.3K−$121.9KCut−$58.6K
AXQ CAPITAL, LP28.2K$523.6KNew
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC28K$520.5K−$135.2KCut−$142.8K
Corient Private Wealth LLC27.5K$510.9K−$68.9KAdded$172.2K
ZIONS BANCORPORATION, NATIONAL ASSOCIATION /UT/27.2K$506.1K−$131.5KCut−$542.5K
Empowered Funds, LLC26.9K$501K−$130.2KCut−$6.03M
Cetera Investment Advisers25K$464.3K−$95.2KAdded$2.8K
POLEN CAPITAL MANAGEMENT LLC24.9K$463.3K−$120.4KCut−$1.4M
Gibbs Wealth Management23.9K$444.7KNew
SIMON QUICK ADVISORS, LLC23.9K$443.9K−$115.3KCut−$115.5K
XPONANCE LLC22.4K$416.7K−$91KCut−$24.6K
Alliance Wealth Advisors, LLC /UT22.2K$412.8KNew
Squarepoint Ops LLC21.6K$400.9KNew
PNC Financial Services Group, Inc.21.5K$399.4K−$88.2KCut−$28.3K
Ameritas Investment Partners, Inc.19.8K$368.8K−$95.8KCut−$95.8K
Blueshift Asset Management, LLC19.2K$356.7K−$91KCut−$84.7K
SANDLER CAPITAL MANAGEMENT19K$352.9K−$73.4KCut−$2.97K
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC18.4K$350.4K−$110.7KCut−$99.6K
SCP Investment, LP18.8K$349.5K−$86.9KCut−$72.1K
SHELTON CAPITAL MANAGEMENT18.2K$337.7KNew
Jain Global LLC18K$334.6KNew
DAYMARK WEALTH PARTNERS, LLC17.6K$327.9KNew
BANK OF MONTREAL /CAN/17.4K$322.6K−$76.4KCut−$47.9K
Portside Wealth Group, LLC16.5K$307.5KNew
CWM, LLC16.2K$300.6K$300.3KAdded$300.2K
Tower Research Capital LLC (TRC)16.2K$300.4K−$36.6KAdded$123.1K
ELEVATION POINT WEALTH PARTNERS, LLC15.9K$295.4KNew
New Age Alpha Advisors, LLC15.7K$292.3K−$75.9KCut−$84.2K
MML INVESTORS SERVICES, LLC15.6K$289.1K−$75.1KCut−$99.7K
Swiss Life Asset Management Ltd15.5K$287.3K−$52.4KAdded$33.1K
CenterBook Partners LP15.4K$285.8KNew
GLENMEDE TRUST CO NA15.3K$284.1K−$73.8KCut−$81.7K
DNB Asset Management AS15.1K$279.9KNew
STRS OHIO15K$278.9K−$72.5KCut−$205.9K
Vident Advisory, LLC14.9K$276.4K−$68.2KCut−$54.5K
MARIETTA INVESTMENT PARTNERS LLC14.8K$275.7K−$71.6KCut−$191.6K
Tributary Capital Management, LLC14.8K$275.1K−$71.5KCut−$71.5K
Vanguard Personalized Indexing Management, LLC14.7K$274.2K−$43.8KAdded$62K
T. Rowe Price Investment Management, Inc.14.6M$271.9K−$70.7KCut−$82K
MIRABELLA FINANCIAL SERVICES LLP14.3K$265.3KNew
TWINBEECH CAPITAL LP14K$260.4K−$67.7KCut−$1.08M
Altshuler Shaham Ltd13.1K$244.4K−$56.5KCut−$29.7K
KEYBANK NATIONAL ASSOCIATION/OH13K$242.4K−$63KCut−$78.5K
CIBC Bancorp USA Inc.12.5K$233KHeld
Atria Investments, Inc12K$222.8K−$46.6KCut−$3.2K
Qsemble Capital Management, LP11.8K$219.6K−$57KCut−$818.4K
Stratos Wealth Partners, LTD.11.1K$206.8K−$51KCut−$40.7K
Aigen Investment Management, LP10.8K$201.3K−$50.8KCut−$45.2K
Beacon Pointe Advisors, LLC10.7K$198.8KNew
PROFUND ADVISORS LLC10.3K$191.8K−$49.8KCut−$64.7K
SBI Okasan Asset Management Co.Ltd.11K$190.5K−$70.9KCut−$71K
Orion Porfolio Solutions, LLC10.2K$188.7KNew
PRELUDE CAPITAL MANAGEMENT, LLC10K$185.9K−$48.3KCut−$73.7K
Corient IA LLC8.89K$165.3K−$42.9KCut−$68.9K
US BANCORP \DE\7.19K$133.7K−$34.7KCut−$35.9K
State of Wyoming6.38K$118.5K−$30.8KCut−$47.5K
Mirae Asset Global Investments Co., Ltd.5.7K$106KNew
Pinnacle Wealth Planning Services, Inc.5.64K$104.9K−$27.3KCut−$55.2K

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.