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.
13F holders, Q2 2026
Institutional positions in Mirion Technologies, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 351
- −6 vs. Q1 2026
- Shares held
- 262.0M
- +12.6M (+5.0%) vs. Q1 2026
- Total value
- $4.70B
- +$56.2M (+1.2%) vs. Q1 2026
- New holders
- 59
- 138 more added
- Sold out
- 65
- 117 more reduced
5 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MIR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 351 | $4.70B |
| Q1 2026 | 362 | $4.71B |
| Q4 2025 | 365 | $5.91B |
| Q3 2025 | 343 | $5.93B |
| Q2 2025 | 302 | $4.46B |
| Q1 2025 | 230 | $2.69B |
| Q4 2024 | 224 | $3.38B |
| Q3 2024 | 176 | $2.27B |
| Q2 2024 | 155 | $2.12B |
| Q1 2024 | 143 | $2.14B |
| Q4 2023 | 125 | $1.93B |
| Q3 2023 | 127 | $1.40B |
| Q2 2023 | 124 | $1.53B |
| Q1 2023 | 117 | $1.45B |
| Q4 2022 | 119 | $1.01B |
| Q3 2022 | 121 | $1.27B |
| Q2 2022 | 115 | $921.8M |
| Q1 2022 | 108 | $1.20B |
| Q4 2021 | 93 | $1.52B |
| Q3 2021 | 4 | $16.4M |
| Q2 2021 | 1 | $20.8K |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Franklin Resources Inc | 884,482 | $15.9M | 0.00% | −1,111,662−55.7% | Reduced |
| Jennison Associates LLC | 887,170 | $15.9M | 0.01% | −55,526−5.9% | Reduced |
| Millennium Management LLC | 991,741 | $17.8M | 0.01% | −4,115,060−80.6% | Reduced |
| Ameriprise Financial Inc | 1,002,284 | $18.0M | 0.00% | −287,406−22.3% | Reduced |
| Clearbridge Investments, LLC | 1,096,729 | $19.7M | 0.02% | +1,096,729 | New |
| Wellington Management Group LLP | 1,098,987 | $19.7M | 0.00% | +261,175+31.2% | Added |
| Segall Bryant & Hamill, LLC | 1,131,124 | $20.3M | 0.24% | +19,250+1.7% | Added |
| Bank of America Corp | 1,158,094 | $20.8M | 0.00% | −197,204−14.6% | Reduced |
| Royal London Asset Management Ltd | 1,176,241 | $21.1M | 0.04% | +1,176,241 | New |
| Principal Financial Group Inc | 1,194,106 | $21.4M | 0.01% | −1,943−0.2% | Reduced |
| Raymond James Financial Inc | 1,196,716 | $21.5M | 0.01% | +121,064+11.3% | Added |
| Conestoga Capital Advisors, LLC | 1,248,061 | $22.4M | 0.49% | −582,958−31.8% | Reduced |
| Emerald Advisers, LLC | 1,364,780 | $24.5M | 0.58% | −16,794−1.2% | Reduced |
| Bank of New York Mellon Corp | 1,381,674 | $24.8M | 0.00% | −3,155,058−69.5% | Reduced |
| TimesSquare Capital Management, LLC | 1,400,642 | $25.1M | 0.37% | +106,477+8.2% | Added |
| Rockefeller Capital Management L.P. | 1,466,144 | $26.3M | 0.04% | +73,420+5.3% | Added |
| Troluce Capital Advisors LLC | 1,539,212 | $27.6M | 10.34% | +39,212+2.6% | Added |
| Schroder Investment Management Group | 1,594,840 | $27.8M | 0.02% | +458,840+40.4% | Added |
| Select Equity Group, L.P. | 1,576,023 | $28.3M | 0.15% | +520,555+49.3% | Added |
| Davidson Kempner Capital Management LP | 1,619,998 | $29.0M | 0.47% | +305,179+23.2% | Added |
| Chescapmanager LLC | 1,659,137 | $29.7M | 3.86% | 00.0% | Unchanged |
| Stephens Investment Management Group LLC | 1,678,373 | $30.1M | 0.32% | +303,497+22.1% | Added |
| Vanguard Fiduciary Trust Co | 1,723,956 | $30.9M | 0.01% | +29,418+1.7% | Added |
| Royal Bank of Canada | 1,782,618 | $32.0M | 0.01% | −178,786−9.1% | Reduced |
| Nuveen, LLC | 2,109,181 | $37.8M | 0.01% | +159,189+8.2% | Added |
| TCW Group Inc | 2,255,645 | $40.4M | 0.27% | +17,219+0.8% | Added |
| Charles Schwab Investment Management Inc | 2,447,222 | $43.9M | 0.01% | +169,977+7.5% | Added |
| Loomis Sayles & Co L P | 2,525,188 | $45.3M | 0.06% | −145,040−5.4% | Reduced |
| Swedbank AB | 2,531,200 | $45.4M | 0.04% | −628,750−19.9% | Reduced |
| JPMorgan Chase & Co | 2,606,507 | $45.7M | 0.00% | −12,613−0.5% | Reduced |
| Northern Trust Corp | 2,586,059 | $46.4M | 0.01% | +219,822+9.3% | Added |
| UBS Group AG | 2,686,713 | $48.2M | 0.01% | −1,080,129−28.7% | Reduced |
| Invesco Ltd. | 2,769,589 | $49.7M | 0.00% | +475,339+20.7% | Added |
| American Century Companies Inc | 3,176,241 | $57.0M | 0.03% | +443,479+16.2% | Added |
| Neuberger Berman Group LLC | 3,199,539 | $57.4M | 0.04% | +2,343,150+273.6% | Added |
| Morgan Stanley | 3,896,754 | $69.9M | 0.00% | +1,611,686+70.5% | Added |
| Bamco Inc | 3,906,083 | $70.0M | 0.11% | +2,692,335+221.8% | Added |
| Jupiter Topco LLC | 4,114,766 | $73.8M | 0.03% | +4,114,766 | New |
| Dimensional Fund Advisors LP | 4,859,755 | $87.1M | 0.02% | +165,467+3.5% | Added |
| Maverick Capital LtdSuperinvestorMaverick Capital | 5,245,039 | $94.0M | 0.85% | +2,595,160+97.9% | Added |
| Geode Capital Management, LLC | 6,280,048 | $112.6M | 0.01% | +339,873+5.7% | Added |
| Congress Asset Management Co | 6,685,434 | $119.9M | 0.74% | +5,571,373+500.1% | Added |
| FMR LLC | 7,329,386 | $131.4M | 0.01% | +777,694+11.9% | Added |
| Cooperman Leon G | 8,383,441 | $150.3M | 4.24% | 00.0% | Unchanged |
| Alyeska Investment Group, L.P. | 9,534,955 | $171.0M | 0.44% | +6,833,375+252.9% | Added |
| State Street Corp | 9,923,609 | $177.9M | 0.01% | +493,592+5.2% | Added |
| Goldman Sachs Group Inc | 10,406,605 | $186.6M | 0.02% | +3,056,937+41.6% | Added |
| Vanguard Capital Management LLC | 10,613,869 | $190.3M | 0.00% | +108,674+1.0% | Added |
| T. Rowe Price Investment Management, Inc. | 14,288,075 | $256.2M | 0.17% | −339,720−2.3% | Reduced |
| Vanguard Portfolio Management LLC | 18,179,850 | $326.0M | 0.01% | +274,128+1.5% | Added |
| BlackRock, Inc. | 38,262,307 | $686.0M | 0.01% | +404,610+1.1% | Added |
| Two Creeks Capital Management, LP | 0 | $0 | 0.00% | −2,449,059−100.0% | Sold out |
| Brown Advisory Inc | 0 | $0 | 0.00% | −1,300,073−100.0% | Sold out |
| Daiwa Securities Group Inc. | 0 | $0 | 0.00% | −1,217,497−100.0% | Sold out |
| Alta Park Capital, LP | 0 | $0 | 0.00% | −977,138−100.0% | Sold out |
| Lord, Abbett & Co. LLC | 0 | $0 | 0.00% | −937,044−100.0% | Sold out |
| Oberweis Asset Management Inc | 0 | $0 | 0.00% | −744,267−100.0% | Sold out |
| Artemis Investment Management LLP | 0 | $0 | 0.00% | −539,134−100.0% | Sold out |
| Zacks Investment Management | 0 | $0 | 0.00% | −388,877−100.0% | Sold out |
| Aperture Investors, LLC | 0 | $0 | 0.00% | −151,685−100.0% | Sold out |
| DDD Partners, LLC | 0 | $0 | 0.00% | −142,790−100.0% | Sold out |
| UniSuper Management Pty Ltd | 0 | $0 | 0.00% | −129,502−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −123,462−100.0% | Sold out |
| First National Bank of Omaha | 0 | $0 | 0.00% | −113,516−100.0% | Sold out |
| Dana Investment Advisors, Inc. | 0 | $0 | 0.00% | −83,120−100.0% | Sold out |
| Capstone Investment Advisors, LLC | 0 | $0 | 0.00% | −75,700−100.0% | Sold out |
| Tribune Investment Group LP | 0 | $0 | 0.00% | −65,000−100.0% | Sold out |
| Asset Management One Co.,Ltd. | 0 | $0 | 0.00% | −55,723−100.0% | Sold out |
| Thornburg Investment Management Inc | 0 | $0 | 0.00% | −51,597−100.0% | Sold out |
| PEAK6 LLC | 0 | $0 | 0.00% | −50,935−100.0% | Sold out |
| Nicholas Investment Partners, LP | 0 | $0 | 0.00% | −49,278−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −46,270−100.0% | Sold out |
| Blackstone Group Inc. | 0 | $0 | 0.00% | −42,414−100.0% | Sold out |
| Twin Tree Management, LP | 0 | $0 | 0.00% | −38,075−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −28,167−100.0% | Sold out |
| Van Eck Associates Corp | 0 | $0 | 0.00% | −28,073−100.0% | Sold out |
| Polen Capital Management LLC | 0 | $0 | 0.00% | −24,921−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −21,567−100.0% | Sold out |
| Janney Montgomery Scott LLC | 0 | $0 | 0.00% | −21,039−100.0% | Sold out |
| Sandler Capital Management | 0 | $0 | 0.00% | −18,982−100.0% | Sold out |
| SCP Investment, LP | 0 | $0 | 0.00% | −18,800−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −18,001−100.0% | Sold out |
| AlphaGrep UK Ltd | 0 | $0 | 0.00% | −15,430−100.0% | Sold out |
| CenterBook Partners LP | 0 | $0 | 0.00% | −15,373−100.0% | Sold out |
| Marietta Investment Partners LLC | 0 | $0 | 0.00% | −14,833−100.0% | Sold out |
| Tributary Capital Management, LLC | 0 | $0 | 0.00% | −14,800−100.0% | Sold out |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −14,273−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −14,008−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −10,827−100.0% | Sold out |
| Park Avenue Securities LLC | 0 | $0 | 0.00% | −10,816−100.0% | Sold out |
| Beacon Pointe Advisors, LLC | 0 | $0 | 0.00% | −10,694−100.0% | Sold out |
| Premier Fund Managers Ltd | 0 | $0 | 0.00% | −11,192−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Tredje AP-fonden | 0 | $0 | 0.00% | −4,662−100.0% | Sold out |
| NBC Securities, Inc. | 0 | $0 | 0.00% | −3,891−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −4,804−100.0% | Sold out |
| REAP Financial Group, LLC | 0 | $0 | 0.00% | −1,415−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −1,325−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −1,065−100.0% | Sold out |
| Strive Financial Group ,LLC | 0 | $0 | 0.00% | −983−100.0% | Sold out |