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 2025
Institutional positions in Mirion Technologies, Inc. as of Dec 31, 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
- 365
- +26 vs. Q3 2025
- Shares held
- 252.2M
- −2.75M (−1.1%) vs. Q3 2025
- Total value
- $5.91B
- −$22.0M (−0.4%) vs. Q3 2025
- New holders
- 82
- 147 more added
- Sold out
- 56
- 94 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Pictet Asset Management Holding SA | 33,392 | $782.0K | 0.00% | +5,473+19.6% | Added |
| Calamos Advisors LLC | 31,700 | $742.4K | 0.00% | −12,700−28.6% | Reduced |
| Sanctuary Advisors, LLC | 30,183 | $706.9K | 0.00% | −1,066−3.4% | Reduced |
| Mutual of America Capital Management LLC | 28,324 | $663.3K | 0.01% | +867+3.2% | Added |
| Laurion Capital Management LP | 28,188 | $660.2K | 0.05% | +28,188 | New |
| Public Employees Retirement Association of Colorado | 27,553 | $645.0K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 25,232 | $590.9K | 0.00% | +9,580+61.2% | Added |
| Van Eck Associates Corp | 25,132 | $589.0K | 0.00% | +14,632+139.4% | Added |
| Twin Tree Management, LP | 25,134 | $588.6K | 0.06% | −49,984−66.5% | Reduced |
| Themes Management Co LLC | 24,739 | $579.4K | 0.46% | +24,739 | New |
| Premier Fund Managers Ltd | 23,605 | $560.0K | 0.03% | −4,547−16.2% | Reduced |
| Simon Quick Advisors, LLC | 23,884 | $559.4K | 0.02% | +50.0% | Added |
| Janney Montgomery Scott LLC | 22,365 | $524.0K | 0.00% | −395−1.7% | Reduced |
| Russell Investments Group, Ltd. | 22,080 | $517.1K | 0.00% | +2,235+11.3% | Added |
| Headlands Technologies LLC | 20,964 | $491.0K | 0.04% | +20,964 | New |
| STRS Ohio | 20,700 | $484.8K | 0.00% | −7,600−26.9% | Reduced |
| Vontobel Holding Ltd. | 20,079 | $470.3K | 0.00% | −7,597−27.4% | Reduced |
| Marietta Investment Partners LLC | 19,953 | $467.3K | 0.09% | +19,953 | New |
| Ameritas Investment Partners, Inc. | 19,840 | $464.7K | 0.01% | 00.0% | Unchanged |
| Cetera Investment Advisers | 19,707 | $461.5K | 0.00% | +1,836+10.3% | Added |
| Wealth Enhancement Advisory Services, LLC | 17,857 | $450.0K | 0.00% | +60.0% | Added |
| Blueshift Asset Management, LLC | 18,846 | $441.4K | 0.13% | +18,846 | New |
| Xponance, Inc. | 18,843 | $441.3K | 0.00% | +1,483+8.5% | Added |
| The PNC Financial Services Group, Inc. | 18,264 | $427.7K | 0.00% | +5,536+43.5% | Added |
| SCP Investment, LP | 18,000 | $421.6K | 0.34% | +18,000 | New |
| Toronto Dominion Bank | 17,746 | $415.6K | 0.00% | +17,746 | New |
| CWM, LLC | 17,138 | $401.0K | 0.00% | +43+0.3% | Added |
| MML Investors Services, LLC | 16,604 | $388.9K | 0.00% | +1,692+11.3% | Added |
| NBC Securities, Inc. | 16,314 | $382.1K | 0.03% | +105+0.6% | Added |
| Ethic Inc. | 16,271 | $381.1K | 0.01% | +4,795+41.8% | Added |
| New Age Alpha Advisors, LLC | 16,077 | $376.5K | 0.02% | +16,077 | New |
| CIBC World Markets Corp | 15,870 | $371.7K | 0.00% | +15,870 | New |
| Bank of Montreal | 15,821 | $370.5K | 0.00% | −274−1.7% | Reduced |
| Glenmede Trust Co NA | 15,623 | $365.9K | 0.00% | +15,623 | New |
| Inceptionr LLC | 15,428 | $361.3K | 0.10% | +15,428 | New |
| Sandler Capital Management | 15,194 | $355.8K | 0.16% | −61,332−80.1% | Reduced |
| Tributary Capital Management, LLC | 14,800 | $346.6K | 0.03% | +14,800 | New |
| Ieq Capital, LLC | 14,522 | $340.1K | 0.00% | −24,041−62.3% | Reduced |
| Vident Advisory, LLC | 14,128 | $330.9K | 0.00% | +14,128 | New |
| Keybank National Association | 13,700 | $320.9K | 0.00% | +85+0.6% | Added |
| Cerity Partners LLC | 12,610 | $295.3K | 0.00% | −873−6.5% | Reduced |
| Harbour Capital Advisors, LLC | 12,125 | $288.9K | 0.06% | +12,125 | New |
| Amundi | 12,300 | $288.1K | 0.00% | +12,300 | New |
| Altshuler Shaham Ltd | 11,704 | $274.1K | 0.00% | +563+5.1% | Added |
| O'Shaughnessy Asset Management, LLC | 11,546 | $270.4K | 0.00% | +1,525+15.2% | Added |
| Quantinno Capital Management LP | 11,286 | $264.3K | 0.00% | +11,286 | New |
| SBI Okasan Asset Management Co.Ltd. | 11,000 | $261.5K | 0.01% | +11,000 | New |
| Prelude Capital Management, LLC | 11,085 | $259.6K | 0.02% | −20,197−64.6% | Reduced |
| Profund Advisors LLC | 10,954 | $256.5K | 0.01% | −333−3.0% | Reduced |
| Swiss Life Asset Management Ltd | 10,856 | $254.2K | 0.00% | +1,024+10.4% | Added |
| VARCOV Co. | 10,838 | $253.8K | 0.10% | +10,838 | New |
| Stratos Wealth Partners, LTD. | 10,567 | $247.5K | 0.00% | +484+4.8% | Added |
| Aigen Investment Management, LP | 10,522 | $246.4K | 0.06% | +10,522 | New |
| Corient IA LLC | 10,000 | $234.2K | 0.22% | 00.0% | Unchanged |
| CIBC Asset Management Inc | 9,840 | $230.5K | 0.00% | +9,840 | New |
| Weiss Asset Management LP | 9,720 | $227.6K | 0.00% | +9,720 | New |
| Atria Investments LLC | 9,650 | $226.0K | 0.00% | +9,650 | New |
| Forum Financial Management, LP | 9,317 | $218.2K | 0.00% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 9,198 | $215.4K | 0.00% | +9,198 | New |
| JustInvest LLC | 9,059 | $212.2K | 0.00% | +9,059 | New |
| Absher Wealth Management, LLC | 9,000 | $210.8K | 0.03% | 00.0% | Unchanged |
| Integrated Advisors Network LLC | 8,957 | $209.8K | 0.01% | −581−6.1% | Reduced |
| CastleKnight Management LP | 8,750 | $204.9K | 0.01% | 00.0% | Unchanged |
| Merit Financial Group, LLC | 8,574 | $200.8K | 0.00% | +8,574 | New |
| Jefferies Financial Group Inc. | 8,500 | $199.1K | 0.00% | +8,500 | New |
| KBC Group NV | 7,669 | $180.0K | 0.00% | +1,321+20.8% | Added |
| Tower Research Capital LLC (TRC) | 7,570 | $177.3K | 0.00% | +1,828+31.8% | Added |
| Kestra Advisory Services, LLC | 7,536 | $176.5K | 0.00% | +7,536 | New |
| US Bancorp | 7,242 | $169.6K | 0.00% | +368+5.4% | Added |
| State of Wyoming | 7,090 | $166.0K | 0.02% | −2,597−26.8% | Reduced |
| PEAK6 LLC | 6,974 | $163.3K | 0.00% | +6,974 | New |
| Pinnacle Wealth Planning Services, Inc. | 6,835 | $160.1K | 0.02% | +6,835 | New |
| Smartleaf Asset Management LLC | 5,542 | $131.3K | 0.00% | −560−9.2% | Reduced |
| Public Employees Retirement System of Ohio | 5,226 | $122.4K | 0.00% | +4,548+670.8% | Added |
| Parallel Advisors, LLC | 3,714 | $87.0K | 0.00% | +1,902+105.0% | Added |
| Nisa Investment Advisors, LLC | 3,662 | $85.8K | 0.00% | −247−6.3% | Reduced |
| Northwestern Mutual Wealth Management Co | 3,571 | $83.6K | 0.00% | +3,394+1,917.5% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 3,466 | $81.0K | 0.00% | +1,116+47.5% | Added |
| Advisor Group Holdings, Inc. | 3,262 | $76.4K | 0.00% | −3,179−49.4% | Reduced |
| GWM Advisors LLC | 3,251 | $76.1K | 0.00% | −1,377−29.8% | Reduced |
| Quest Partners LLC | 3,241 | $75.9K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 2,781 | $65.1K | 0.00% | +1,130+68.4% | Added |
| Central Pacific Bank - Trust Division | 2,500 | $58.5K | 0.01% | 00.0% | Unchanged |
| GAMMA Investing LLC | 2,242 | $52.5K | 0.00% | +1,302+138.5% | Added |
| Global Retirement Partners, LLC | 2,018 | $47.3K | 0.00% | +887+78.4% | Added |
| Salomon & Ludwin, LLC | 1,636 | $40.3K | 0.00% | +366+28.8% | Added |
| Steward Partners Investment Advisory, LLC | 1,709 | $40.0K | 0.00% | +631+58.5% | Added |
| REAP Financial Group, LLC | 1,404 | $32.9K | 0.01% | +236+20.2% | Added |
| Versant Capital Management, Inc | 1,355 | $31.7K | 0.00% | 00.0% | Unchanged |
| Wolff Wiese Magana LLC | 1,350 | $31.6K | 0.02% | +250+22.7% | Added |
| Umb Bank N A | 1,344 | $31.5K | 0.00% | +856+175.4% | Added |
| Quadrant Capital Group LLC | 1,284 | $30.1K | 0.00% | +219+20.6% | Added |
| EverSource Wealth Advisors, LLC | 1,207 | $28.3K | 0.00% | −849−41.3% | Reduced |
| Fifth Third Bancorp | 1,129 | $26.4K | 0.00% | +308+37.5% | Added |
| Los Angeles Capital Management LLC | 888 | $25.8K | 0.00% | +888 | New |
| DV Trading LLC | 1,006 | $23.6K | 0.00% | +1,006 | New |
| SageView Advisory Group, LLC | 1,005 | $23.5K | 0.00% | +1,005 | New |
| Essential Partners LLC | 976 | $22.9K | 0.01% | +1+0.1% | Added |
| Danske Bank A/S | 900 | $21.1K | 0.00% | 00.0% | Unchanged |
| Strive Financial Group ,LLC | 852 | $20.0K | 0.01% | +852 | New |