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, Q4 2024
Institutional positions in Mirion Technologies, Inc. as of Dec 31, 2024. 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
- 224
- +52 vs. Q3 2024
- Shares held
- 193.9M
- −10.7M (−5.2%) vs. Q3 2024
- Total value
- $3.38B
- +$1.12B (+49.4%) vs. Q3 2024
- New holders
- 75
- 82 more added
- Sold out
- 23
- 55 more reduced
4 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2024: 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, Q4 2024
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Northern Trust Corp | 2,041,589 | $35.6M | 0.01% | +328,164+19.2% | Added |
| Bornite Capital Management LP | 2,117,000 | $36.9M | 4.97% | +2,117,000 | New |
| Artemis Investment Management LLP | 2,186,553 | $38.2M | 0.54% | +2,186,553 | New |
| Select Equity Group, L.P. | 2,313,419 | $40.4M | 0.16% | −2,004,285−46.4% | Reduced |
| ArrowMark Colorado Holdings LLC | 2,368,550 | $41.3M | 0.56% | −631,510−21.0% | Reduced |
| Lord, Abbett & Co. LLC | 2,368,734 | $41.3M | 0.13% | +981,199+70.7% | Added |
| American Century Companies Inc | 2,385,033 | $41.6M | 0.02% | −1,427,563−37.4% | Reduced |
| William Blair Investment Management, LLC | 3,041,016 | $53.1M | 0.13% | +3,041,016 | New |
| Millennium Management LLC | 3,105,374 | $54.2M | 0.05% | +1,557,077+100.6% | Added |
| Corsair Capital Management, L.P. | 3,169,620 | $55.3M | 11.91% | +8,770+0.3% | Added |
| Alyeska Investment Group, L.P. | 3,761,315 | $65.6M | 0.25% | −4,057,311−51.9% | Reduced |
| Brown Advisory Inc | 3,812,024 | $66.5M | 0.08% | +3,812,024 | New |
| Arrowstreet Capital, Limited Partnership | 4,214,921 | $73.6M | 0.06% | +4,200,894+29,948.6% | Added |
| Geode Capital Management, LLC | 4,571,828 | $79.8M | 0.01% | +69,373+1.5% | Added |
| State Street Corp | 5,201,092 | $90.8M | 0.00% | −164,636−3.1% | Reduced |
| Swedbank AB | 6,060,500 | $105.8M | 0.13% | −4,158,500−40.7% | Reduced |
| Maverick Capital LtdSuperinvestorMaverick Capital | 6,177,611 | $107.8M | 1.94% | +5,994,184+3,267.9% | Added |
| Cooperman Leon G | 7,025,000 | $122.6M | 4.64% | −1,000,000−12.5% | Reduced |
| Dimensional Fund Advisors LP | 7,185,694 | $125.4M | 0.03% | +171,918+2.5% | Added |
| Janus Henderson Group PLC | 8,330,495 | $145.4M | 0.07% | +229,718+2.8% | Added |
| Goldman Sachs Group Inc | 8,875,458 | $154.9M | 0.03% | −25,933,562−74.5% | Reduced |
| BlackRock, Inc. | 16,102,061 | $281.0M | 0.01% | +129,141+0.8% | Added |
| T. Rowe Price Investment Management, Inc. | 20,388,146 | $355.8M | 0.22% | +216,258+1.1% | Added |
| Vanguard Group Inc | 23,909,802 | $417.2M | 0.01% | +227,178+1.0% | Added |
| P2 Capital Partners, LLC | 0 | $0 | 0.00% | −3,350,000−100.0% | Sold out |
| Crestline Management, LP | 0 | $0 | 0.00% | −941,649−100.0% | Sold out |
| Freshford Capital Management, LLC | 0 | $0 | 0.00% | −475,801−100.0% | Sold out |
| Shellback Capital, LP | 0 | $0 | 0.00% | −408,810−100.0% | Sold out |
| Portolan Capital Management, LLC | 0 | $0 | 0.00% | −236,975−100.0% | Sold out |
| Russell Investments Group, Ltd. | 0 | $0 | 0.00% | −163,766−100.0% | Sold out |
| Concentric Capital Strategies, LP | 0 | $0 | 0.00% | −111,517−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −85,313−100.0% | Sold out |
| MYDA Advisors LLC | 0 | $0 | 0.00% | −80,000−100.0% | Sold out |
| Boston Partners | 0 | $0 | 0.00% | −79,931−100.0% | Sold out |
| Gotham Asset Management, LLC | 0 | $0 | 0.00% | −29,010−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −25,396−100.0% | Sold out |
| Nordwand Advisors, LLC | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −19,612−100.0% | Sold out |
| Levin Capital Strategies, L.P. | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −12,878−100.0% | Sold out |
| Paloma Partners Management Co | 0 | $0 | 0.00% | −11,040−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −9,875−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −1,324−100.0% | Sold out |
| Zazove Associates LLC | 0 | $0 | 0.00% | −461−100.0% | Sold out |
| Capital Performance Advisors LLP | 0 | $0 | 0.00% | −77−100.0% | Sold out |
| Anfield Capital Management, LLC | 0 | $0 | 0.00% | −45−100.0% | Sold out |
| Claris Advisors, LLC | 0 | $0 | 0.00% | −12−100.0% | Sold out |
| Eagle Asset Management Inc | – | – | – | – | Not filed |
| AJOVista, LLC | – | – | – | – | Not filed |
| PEAK6 Investments LLC | – | – | – | – | Not filed |
| FinTrust Capital Advisors, LLC | – | – | – | – | Not filed |