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, Q3 2025
Institutional positions in Mirion Technologies, Inc. as of Sep 30, 2025. 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
- 343
- +44 vs. Q2 2025
- Shares held
- 255.0M
- +47.7M (+23.0%) vs. Q2 2025
- Total value
- $5.93B
- +$1.47B (+32.9%) vs. Q2 2025
- New holders
- 91
- 129 more added
- Sold out
- 47
- 91 more reduced
3 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: 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, Q3 2025
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Verdence Capital Advisors LLC | 8,814 | $216.3K | 0.01% | +8,814 | New |
| Forum Financial Management, LP | 9,317 | $216.7K | 0.00% | +20.0% | Added |
| FORA Capital, LLC | 9,436 | $219.5K | 0.04% | −49,467−84.0% | Reduced |
| Integrated Advisors Network LLC | 9,538 | $221.9K | 0.01% | −2,633−21.6% | Reduced |
| State of Wyoming | 9,687 | $225.3K | 0.03% | +3,454+55.4% | Added |
| Swiss Life Asset Management Ltd | 9,832 | $228.7K | 0.00% | +9,832 | New |
| Corient IA LLC | 10,000 | $232.6K | 0.17% | −50,000−83.3% | Reduced |
| O'Shaughnessy Asset Management, LLC | 10,021 | $233.1K | 0.00% | +10,021 | New |
| Stratos Wealth Partners, LTD. | 10,083 | $234.5K | 0.00% | +10,083 | New |
| Bailard, Inc. | 10,348 | $240.7K | 0.01% | −7,400−41.7% | Reduced |
| Van Eck Associates Corp | 10,500 | $244.0K | 0.00% | +10,500 | New |
| Altshuler Shaham Ltd | 11,141 | $259.1K | 0.00% | +1,622+17.0% | Added |
| Profund Advisors LLC | 11,287 | $262.5K | 0.01% | +11,287 | New |
| Diametric Capital, LP | 11,448 | $266.3K | 0.10% | +11,448 | New |
| Ethic Inc. | 11,476 | $266.9K | 0.00% | +1,531+15.4% | Added |
| Glenmede Investment Management, LP | 11,959 | $278.2K | 0.00% | +11,959 | New |
| CI Private Wealth, LLC | 12,411 | $288.7K | 0.00% | +12,411 | New |
| The PNC Financial Services Group, Inc. | 12,728 | $296.1K | 0.00% | −4,084−24.3% | Reduced |
| Cerity Partners LLC | 13,483 | $313.6K | 0.00% | +1,752+14.9% | Added |
| Keybank National Association | 13,615 | $316.7K | 0.00% | +68+0.5% | Added |
| Natixis Advisors, L.P. | 14,096 | $328.0K | 0.00% | +14,096 | New |
| MML Investors Services, LLC | 14,912 | $346.9K | 0.00% | +1,464+10.9% | Added |
| Captrust Financial Advisors | 15,652 | $364.1K | 0.00% | +5,448+53.4% | Added |
| Bank of Montreal | 16,095 | $374.4K | 0.00% | −49,545−75.5% | Reduced |
| NBC Securities, Inc. | 16,209 | $377.0K | 0.03% | +6,405+65.3% | Added |
| Axq Capital, LP | 16,795 | $390.7K | 0.15% | −9,859−37.0% | Reduced |
| Dymon Asia Capital (Singapore) Pte. Ltd. | 17,100 | $397.7K | 0.16% | +17,100 | New |
| CWM, LLC | 17,095 | $398.0K | 0.00% | +185+1.1% | Added |
| Xponance, Inc. | 17,360 | $403.8K | 0.00% | +701+4.2% | Added |
| Wealth Enhancement Advisory Services, LLC | 17,851 | $412.9K | 0.00% | +304+1.7% | Added |
| Cetera Investment Advisers | 17,871 | $415.7K | 0.00% | +4,473+33.4% | Added |
| Ameritas Investment Partners, Inc. | 19,840 | $461.5K | 0.01% | −1,615−7.5% | Reduced |
| Russell Investments Group, Ltd. | 19,845 | $461.6K | 0.00% | +19,758+22,710.3% | Added |
| Toroso Investments, LLC | 20,777 | $483.3K | 0.00% | −497−2.3% | Reduced |
| Janney Montgomery Scott LLC | 22,760 | $529.0K | 0.00% | +321+1.4% | Added |
| Simon Quick Advisors, LLC | 23,879 | $555.4K | 0.03% | 00.0% | Unchanged |
| Mackenzie Financial Corp | 24,289 | $565.0K | 0.00% | −283−1.2% | Reduced |
| CIBC Bancorp USA Inc. | 25,060 | $582.9K | 0.00% | +25,060 | New |
| SummitTX Capital, L.P. | 25,482 | $592.7K | 0.02% | −124,518−83.0% | Reduced |
| Premier Fund Managers Ltd | 28,152 | $633.0K | 0.03% | +9,218+48.7% | Added |
| Mutual of America Capital Management LLC | 27,457 | $638.6K | 0.01% | +27,457 | New |
| Public Employees Retirement Association of Colorado | 27,553 | $641.0K | 0.00% | −785−2.8% | Reduced |
| Vontobel Holding Ltd. | 27,676 | $643.7K | 0.00% | −9,863−26.3% | Reduced |
| Polymer Capital Management (US) LLC | 27,682 | $643.9K | 0.09% | +27,682 | New |
| Virtu Financial LLC | 27,771 | $646.0K | 0.04% | +27,771 | New |
| Teacher Retirement System of Texas | 27,885 | $648.6K | 0.00% | −4,456−13.8% | Reduced |
| Pictet Asset Management Holding SA | 27,919 | $649.4K | 0.00% | −6,865−19.7% | Reduced |
| STRS Ohio | 28,300 | $658.3K | 0.00% | −33,800−54.4% | Reduced |
| Boothbay Fund Management, LLC | 28,952 | $673.4K | 0.02% | −66,838−69.8% | Reduced |
| Sanctuary Advisors, LLC | 31,249 | $726.9K | 0.00% | +798+2.6% | Added |
| Prelude Capital Management, LLC | 31,282 | $727.6K | 0.06% | +31,282 | New |
| Oppenheimer & Co Inc | 32,062 | $745.8K | 0.01% | +550+1.7% | Added |
| Truist Financial Corp | 32,203 | $749.0K | 0.00% | +36+0.1% | Added |
| Maryland State Retirement & Pension System | 35,417 | $823.8K | 0.02% | +35,417 | New |
| Mariner, LLC | 35,806 | $832.8K | 0.00% | −21,648−37.7% | Reduced |
| Ieq Capital, LLC | 38,563 | $897.0K | 0.00% | +480+1.3% | Added |
| 1832 Asset Management L.P. | 40,000 | $930.4K | 0.00% | +40,000 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 40,963 | $952.8K | 0.00% | +2,576+6.7% | Added |
| ProShare Advisors LLC | 41,587 | $967.3K | 0.00% | −1,504−3.5% | Reduced |
| Voya Investment Management LLC | 42,496 | $988.5K | 0.00% | −14,976−26.1% | Reduced |
| Cresset Asset Management, LLC | 42,500 | $988.5K | 0.00% | 00.0% | Unchanged |
| Groupama Asset Managment | – | $990.6K | 0.01% | – | – |
| IMC-Chicago, LLC | 42,689 | $992.9K | 0.02% | +42,689 | New |
| Fund 1 Investments, LLC | 43,900 | $1.02M | 0.13% | +43,900 | New |
| Calamos Advisors LLC | 44,400 | $1.03M | 0.00% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 44,400 | $1.03M | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 44,963 | $1.05M | 0.00% | +44,963 | New |
| Daiwa Securities Group Inc. | 45,400 | $1.06M | 0.00% | −30,300−40.0% | Reduced |
| Wolverine Trading, LLC | 50,728 | $1.14M | 0.02% | +35,717+237.9% | Added |
| Wolverine Asset Management LLC | 49,359 | $1.15M | 0.02% | −40,093−44.8% | Reduced |
| Hel Ved Capital Management Ltd | 49,800 | $1.16M | 0.63% | +49,800 | New |
| Brevan Howard Capital Management LP | 49,910 | $1.16M | 0.02% | +16,985+51.6% | Added |
| Teachers Retirement System of the State of Kentucky | 52,500 | $1.22M | 0.01% | +52,500 | New |
| New York State Teachers Retirement System | 54,536 | $1.27M | 0.00% | +54,536 | New |
| Oregon Public Employees Retirement Fund | 55,200 | $1.28M | 0.02% | +55,200 | New |
| Jane Street Group, LLC | 55,760 | $1.30M | 0.00% | −185,784−76.9% | Reduced |
| State Board of Administration of Florida Retirement System | 57,210 | $1.33M | 0.00% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 57,420 | $1.34M | 0.00% | +57,420 | New |
| Police & Firemen's Retirement System of New Jersey | 59,632 | $1.39M | 0.01% | +11,681+24.4% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 62,446 | $1.45M | 0.01% | +62,446 | New |
| Arizona State Retirement System | 63,407 | $1.47M | 0.01% | +974+1.6% | Added |
| Register Financial Advisors LLC | 65,800 | $1.53M | 0.60% | +2,000+3.1% | Added |
| Lisanti Capital Growth, LLC | 67,175 | $1.56M | 0.38% | +67,175 | New |
| Amalgamated Bank | 69,729 | $1.62M | 0.01% | +62,667+887.4% | Added |
| Handelsbanken Fonder AB | 72,531 | $1.69M | 0.01% | +11,500+18.8% | Added |
| Yousif Capital Management, LLC | 74,991 | $1.74M | 0.02% | +74,991 | New |
| Davidson Kempner Capital Management LP | 75,000 | $1.74M | 0.02% | +75,000 | New |
| Twin Tree Management, LP | 75,118 | $1.75M | 0.08% | +35,537+89.8% | Added |
| Capstone Investment Advisors, LLC | 75,700 | $1.76M | 0.02% | −28,650−27.5% | Reduced |
| Polen Capital Management LLC | 76,119 | $1.77M | 0.01% | +18,889+33.0% | Added |
| LPL Financial LLC | 76,228 | $1.77M | 0.00% | +31,058+68.8% | Added |
| Sandler Capital Management | 76,526 | $1.78M | 0.65% | −12,830−14.4% | Reduced |
| Freestone Grove Partners LP | 77,415 | $1.80M | 0.01% | +77,415 | New |
| Sumitomo Life Insurance Co | 81,691 | $1.90M | 0.06% | +17,196+26.7% | Added |
| Sterling Capital Management LLC | 88,594 | $2.06M | 0.03% | +6,349+7.7% | Added |
| Blackhawk Capital Partners LLC. | 89,254 | $2.08M | 0.81% | +36,361+68.7% | Added |
| Jackson Creek Investment Advisors LLC | 93,843 | $2.18M | 0.63% | +19,843+26.8% | Added |
| Intech Investment Management LLC | 94,526 | $2.20M | 0.02% | −33,426−26.1% | Reduced |
| Ci Investments Inc. | 96,565 | $2.25M | 0.01% | +43,700+82.7% | Added |
| Monashee Investment Management LLC | 100,000 | $2.33M | 1.16% | +100,000 | New |