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 |
|---|---|---|---|---|---|
| Universal- Beteiligungs- und Servicegesellschaft mbH | 275,944 | $6.42M | 0.01% | +35,395+14.7% | Added |
| Maven Securities LTD | 275,000 | $6.40M | 1.22% | +275,000 | New |
| First Trust Advisors LP | 269,201 | $6.26M | 0.00% | +79,166+41.7% | Added |
| Hollow Brook Wealth Management LLC | 255,717 | $5.95M | 1.41% | −199−0.1% | Reduced |
| Exchange Traded Concepts, LLC | 253,080 | $5.89M | 0.06% | +71,607+39.5% | Added |
| Prudential Financial Inc | 241,640 | $5.62M | 0.01% | +214,630+794.6% | Added |
| JPMorgan Chase & Co | 238,340 | $5.54M | 0.00% | −586,929−71.1% | Reduced |
| Zevenbergen Capital Investments LLC | 231,500 | $5.38M | 0.10% | +221,300+2,169.6% | Added |
| Robeco Schweiz AG | 230,000 | $5.35M | 0.12% | 00.0% | Unchanged |
| Envestnet Asset Management Inc | 228,726 | $5.32M | 0.00% | −4,270−1.8% | Reduced |
| Rice Hall James & Associates, LLC | 223,031 | $5.19M | 0.28% | −46,792−17.3% | Reduced |
| BNP Paribas Arbitrage, SA | 217,951 | $5.07M | 0.00% | +69,556+46.9% | Added |
| Simplex Trading, LLC | 202,331 | $4.71M | 0.10% | +83,382+70.1% | Added |
| Zimmer Partners, LP | 200,000 | $4.65M | 0.11% | +200,000 | New |
| Munro Partners | 199,910 | $4.65M | 0.13% | +78,035+64.0% | Added |
| California State Teachers Retirement System | 197,969 | $4.60M | 0.00% | −5,433−2.7% | Reduced |
| Citadel Advisors LLC | 189,844 | $4.42M | 0.00% | −261,630−58.0% | Reduced |
| Deutsche Bank AG | 188,914 | $4.39M | 0.00% | −75,963−28.7% | Reduced |
| Legato Capital Management LLC | 188,037 | $4.37M | 0.48% | +37,398+24.8% | Added |
| Thrivent Financial for Lutherans | 179,781 | $4.18M | 0.01% | +179,781 | New |
| Comerica Bank | 179,306 | $4.17M | 0.02% | +176,874+7,272.8% | Added |
| Montanaro Asset Management Ltd | 171,600 | $3.99M | 1.00% | +171,600 | New |
| New York State Common Retirement Fund | 169,875 | $3.95M | 0.01% | +36,694+27.6% | Added |
| Verition Fund Management LLC | 162,220 | $3.77M | 0.02% | −173,223−51.6% | Reduced |
| Centiva Capital, LP | 155,000 | $3.61M | 0.34% | +58,733+61.0% | Added |
| Royce & Associates LP | 152,083 | $3.54M | 0.04% | −638,011−80.8% | Reduced |
| Pathstone Holdings, LLC | 148,621 | $3.46M | 0.01% | +10,021+7.2% | Added |
| EAM Investors, LLC | 146,731 | $3.36M | 0.38% | −62,243−29.8% | Reduced |
| State of Wisconsin Investment Board | 136,759 | $3.18M | 0.01% | −17,015−11.1% | Reduced |
| MetLife Investment Management | 136,490 | $3.17M | 0.02% | +10,955+8.7% | Added |
| Creative Planning | 130,540 | $3.04M | 0.00% | +25,544+24.3% | Added |
| State of Alaska, Department of Revenue | 125,407 | $2.92M | 0.03% | +125,407 | New |
| Kennedy Capital Management, Inc. | 124,571 | $2.90M | 0.06% | +124,571 | New |
| SG Americas Securities, LLC | 117,069 | $2.72M | 0.01% | +41,663+55.3% | Added |
| Element Capital Management LLC | 115,578 | $2.69M | 3.81% | +115,578 | New |
| Macquarie Group Ltd | 114,724 | $2.67M | 0.00% | +114,724 | New |
| Concentric Capital Strategies, LP | 114,483 | $2.66M | 0.13% | −297,977−72.2% | Reduced |
| Manufacturers Life Insurance Company, The | 112,123 | $2.61M | 0.00% | +400+0.4% | Added |
| State of New Jersey Common Pension Fund D | 105,248 | $2.45M | 0.01% | −563−0.5% | Reduced |
| Polar Asset Management Partners Inc. | 105,000 | $2.44M | 0.05% | −2,498−2.3% | Reduced |
| Louisiana State Employees Retirement System | 104,800 | $2.44M | 0.04% | +104,800 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 101,430 | $2.36M | 0.00% | −13,902−12.1% | Reduced |
| Monashee Investment Management LLC | 100,000 | $2.33M | 1.16% | +100,000 | New |
| Ovata Capital Management Ltd | 100,000 | $2.33M | 0.47% | +100,000 | New |
| Ci Investments Inc. | 96,565 | $2.25M | 0.01% | +43,700+82.7% | Added |
| Intech Investment Management LLC | 94,526 | $2.20M | 0.02% | −33,426−26.1% | Reduced |
| Jackson Creek Investment Advisors LLC | 93,843 | $2.18M | 0.63% | +19,843+26.8% | Added |
| Blackhawk Capital Partners LLC. | 89,254 | $2.08M | 0.81% | +36,361+68.7% | Added |
| Sterling Capital Management LLC | 88,594 | $2.06M | 0.03% | +6,349+7.7% | Added |
| Sumitomo Life Insurance Co | 81,691 | $1.90M | 0.06% | +17,196+26.7% | Added |
| Freestone Grove Partners LP | 77,415 | $1.80M | 0.01% | +77,415 | New |
| Sandler Capital Management | 76,526 | $1.78M | 0.65% | −12,830−14.4% | Reduced |
| LPL Financial LLC | 76,228 | $1.77M | 0.00% | +31,058+68.8% | Added |
| Polen Capital Management LLC | 76,119 | $1.77M | 0.01% | +18,889+33.0% | Added |
| Capstone Investment Advisors, LLC | 75,700 | $1.76M | 0.02% | −28,650−27.5% | Reduced |
| Twin Tree Management, LP | 75,118 | $1.75M | 0.08% | +35,537+89.8% | Added |
| Davidson Kempner Capital Management LP | 75,000 | $1.74M | 0.02% | +75,000 | New |
| Yousif Capital Management, LLC | 74,991 | $1.74M | 0.02% | +74,991 | New |
| Handelsbanken Fonder AB | 72,531 | $1.69M | 0.01% | +11,500+18.8% | Added |
| Amalgamated Bank | 69,729 | $1.62M | 0.01% | +62,667+887.4% | Added |
| Lisanti Capital Growth, LLC | 67,175 | $1.56M | 0.38% | +67,175 | New |
| Register Financial Advisors LLC | 65,800 | $1.53M | 0.60% | +2,000+3.1% | Added |
| Arizona State Retirement System | 63,407 | $1.47M | 0.01% | +974+1.6% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 62,446 | $1.45M | 0.01% | +62,446 | New |
| Police & Firemen's Retirement System of New Jersey | 59,632 | $1.39M | 0.01% | +11,681+24.4% | Added |
| State of Tennessee, Treasury Department | 57,420 | $1.34M | 0.00% | +57,420 | New |
| State Board of Administration of Florida Retirement System | 57,210 | $1.33M | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 55,760 | $1.30M | 0.00% | −185,784−76.9% | Reduced |
| Oregon Public Employees Retirement Fund | 55,200 | $1.28M | 0.02% | +55,200 | New |
| New York State Teachers Retirement System | 54,536 | $1.27M | 0.00% | +54,536 | New |
| Teachers Retirement System of the State of Kentucky | 52,500 | $1.22M | 0.01% | +52,500 | New |
| Brevan Howard Capital Management LP | 49,910 | $1.16M | 0.02% | +16,985+51.6% | Added |
| Hel Ved Capital Management Ltd | 49,800 | $1.16M | 0.63% | +49,800 | New |
| Wolverine Asset Management LLC | 49,359 | $1.15M | 0.02% | −40,093−44.8% | Reduced |
| Wolverine Trading, LLC | 50,728 | $1.14M | 0.02% | +35,717+237.9% | Added |
| Daiwa Securities Group Inc. | 45,400 | $1.06M | 0.00% | −30,300−40.0% | Reduced |
| Federated Hermes, Inc. | 44,963 | $1.05M | 0.00% | +44,963 | 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 |
| Fund 1 Investments, LLC | 43,900 | $1.02M | 0.13% | +43,900 | New |
| IMC-Chicago, LLC | 42,689 | $992.9K | 0.02% | +42,689 | New |
| Groupama Asset Managment | – | $990.6K | 0.01% | – | – |
| Cresset Asset Management, LLC | 42,500 | $988.5K | 0.00% | 00.0% | Unchanged |
| Voya Investment Management LLC | 42,496 | $988.5K | 0.00% | −14,976−26.1% | Reduced |
| ProShare Advisors LLC | 41,587 | $967.3K | 0.00% | −1,504−3.5% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 40,963 | $952.8K | 0.00% | +2,576+6.7% | Added |
| 1832 Asset Management L.P. | 40,000 | $930.4K | 0.00% | +40,000 | New |
| Ieq Capital, LLC | 38,563 | $897.0K | 0.00% | +480+1.3% | Added |
| Mariner, LLC | 35,806 | $832.8K | 0.00% | −21,648−37.7% | Reduced |
| Maryland State Retirement & Pension System | 35,417 | $823.8K | 0.02% | +35,417 | New |
| Truist Financial Corp | 32,203 | $749.0K | 0.00% | +36+0.1% | Added |
| Oppenheimer & Co Inc | 32,062 | $745.8K | 0.01% | +550+1.7% | Added |
| Prelude Capital Management, LLC | 31,282 | $727.6K | 0.06% | +31,282 | New |
| Sanctuary Advisors, LLC | 31,249 | $726.9K | 0.00% | +798+2.6% | Added |
| Boothbay Fund Management, LLC | 28,952 | $673.4K | 0.02% | −66,838−69.8% | Reduced |
| STRS Ohio | 28,300 | $658.3K | 0.00% | −33,800−54.4% | Reduced |
| Pictet Asset Management Holding SA | 27,919 | $649.4K | 0.00% | −6,865−19.7% | Reduced |
| Teacher Retirement System of Texas | 27,885 | $648.6K | 0.00% | −4,456−13.8% | Reduced |
| Virtu Financial LLC | 27,771 | $646.0K | 0.04% | +27,771 | New |
| Polymer Capital Management (US) LLC | 27,682 | $643.9K | 0.09% | +27,682 | New |