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, Q1 2026
Institutional positions in Mirion Technologies, Inc. as of Mar 31, 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
- 362
- +5 vs. Q4 2025
- Shares held
- 253.5M
- +32.3M (+14.6%) vs. Q4 2025
- Total value
- $4.71B
- −$467.0M (−9.0%) vs. Q4 2025
- New holders
- 62
- 136 more added
- Sold out
- 57
- 131 more reduced
8 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| SBI Okasan Asset Management Co.Ltd. | 11,000 | $190.5K | 0.01% | 00.0% | Unchanged |
| Profund Advisors LLC | 10,320 | $191.8K | 0.01% | −634−5.8% | Reduced |
| Premier Fund Managers Ltd | 11,192 | $194.0K | 0.01% | −12,413−52.6% | Reduced |
| Beacon Pointe Advisors, LLC | 10,694 | $198.8K | 0.00% | +10,694 | New |
| Park Avenue Securities LLC | 10,816 | $201.0K | 0.00% | +10,816 | New |
| Aigen Investment Management, LP | 10,827 | $201.3K | 0.05% | +305+2.9% | Added |
| Stratos Wealth Partners, LTD. | 11,123 | $206.8K | 0.00% | +556+5.3% | Added |
| Qsemble Capital Management, LP | 11,811 | $219.6K | 0.02% | −32,508−73.4% | Reduced |
| Atria Investments LLC | 11,985 | $222.8K | 0.00% | +2,335+24.2% | Added |
| CIBC Bancorp USA Inc. | 12,535 | $233.0K | 0.00% | +12,535 | New |
| Keybank National Association | 13,038 | $242.4K | 0.00% | −662−4.8% | Reduced |
| Altshuler Shaham Ltd | 13,147 | $244.4K | 0.00% | +1,443+12.3% | Added |
| Twinbeech Capital LP | 14,008 | $260.4K | 0.03% | −43,092−75.5% | Reduced |
| Mirabella Financial Services LLP | 14,273 | $265.3K | 0.03% | +14,273 | New |
| JustInvest LLC | 14,748 | $274.2K | 0.00% | +5,689+62.8% | Added |
| Tributary Capital Management, LLC | 14,800 | $275.1K | 0.03% | 00.0% | Unchanged |
| Marietta Investment Partners LLC | 14,833 | $275.7K | 0.06% | −5,120−25.7% | Reduced |
| Vident Advisory, LLC | 14,866 | $276.4K | 0.00% | +738+5.2% | Added |
| STRS Ohio | 15,000 | $278.9K | 0.00% | −5,700−27.5% | Reduced |
| DnB Asset Management AS | 15,054 | $279.9K | 0.00% | +15,054 | New |
| Glenmede Trust Co NA | 15,285 | $284.1K | 0.00% | −338−2.2% | Reduced |
| CenterBook Partners LP | 15,373 | $285.8K | 0.02% | +15,373 | New |
| AlphaGrep UK Ltd | 15,430 | $286.8K | 0.08% | +15,430 | New |
| Swiss Life Asset Management Ltd | 15,457 | $287.3K | 0.00% | +4,601+42.4% | Added |
| MML Investors Services, LLC | 15,553 | $289.1K | 0.00% | −1,051−6.3% | Reduced |
| New Age Alpha Advisors, LLC | 15,724 | $292.3K | 0.01% | −353−2.2% | Reduced |
| Mount Yale Investment Advisors, LLC | 15,890 | $295.4K | 0.01% | +15,890 | New |
| Tower Research Capital LLC (TRC) | 16,160 | $300.4K | 0.01% | +8,590+113.5% | Added |
| CWM, LLC | 16,172 | $300.6K | 0.00% | −966−5.6% | Reduced |
| Portside Wealth Group, LLC | 16,542 | $307.5K | 0.04% | +16,542 | New |
| Bank of Montreal | 17,355 | $322.6K | 0.00% | +1,534+9.7% | Added |
| Daymark Wealth Partners, LLC | 17,640 | $327.9K | 0.01% | +17,640 | New |
| Jain Global LLC | 18,001 | $334.6K | 0.00% | +18,001 | New |
| Shelton Capital Management | 18,164 | $337.7K | 0.01% | +18,164 | New |
| SCP Investment, LP | 18,800 | $349.5K | 0.39% | +800+4.4% | Added |
| Wealth Enhancement Advisory Services, LLC | 18,444 | $350.4K | 0.00% | +587+3.3% | Added |
| Sandler Capital Management | 18,982 | $352.9K | 0.24% | +3,788+24.9% | Added |
| Blueshift Asset Management, LLC | 19,186 | $356.7K | 0.11% | +340+1.8% | Added |
| Ameritas Investment Partners, Inc. | 19,840 | $368.8K | 0.01% | 00.0% | Unchanged |
| Janney Montgomery Scott LLC | 21,039 | $391.0K | 0.00% | −1,326−5.9% | Reduced |
| The PNC Financial Services Group, Inc. | 21,485 | $399.4K | 0.00% | +3,221+17.6% | Added |
| Squarepoint Ops LLC | 21,567 | $400.9K | 0.00% | +21,567 | New |
| Alliance Wealth Advisors, LLC | 22,205 | $412.8K | 0.09% | +22,205 | New |
| Xponance, Inc. | 22,414 | $416.7K | 0.00% | +3,571+19.0% | Added |
| Simon Quick Advisors, LLC | 23,879 | $443.9K | 0.02% | −50.0% | Reduced |
| Gibbs Wealth Management | 23,922 | $444.7K | 0.06% | +23,922 | New |
| Polen Capital Management LLC | 24,921 | $463.3K | 0.00% | −54,498−68.6% | Reduced |
| Cetera Investment Advisers | 24,978 | $464.3K | 0.00% | +5,271+26.7% | Added |
| SG Americas Securities, LLC | 25,783 | $479.0K | 0.00% | −18,044−41.2% | Reduced |
| Empowered Funds, LLC | 26,950 | $501.0K | 0.00% | −251,870−90.3% | Reduced |
| Zions Bancorporation, National Association | 27,223 | $506.1K | 0.03% | −17,548−39.2% | Reduced |
| CI Private Wealth, LLC | 27,481 | $510.9K | 0.00% | +27,481 | New |
| Public Employees Retirement Association of Colorado | 27,553 | $512.0K | 0.00% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 27,999 | $520.5K | 0.01% | −325−1.1% | Reduced |
| Van Eck Associates Corp | 28,073 | $522.0K | 0.00% | +2,941+11.7% | Added |
| Axq Capital, LP | 28,167 | $523.6K | 0.07% | +28,167 | New |
| Captrust Financial Advisors | 28,633 | $532.3K | 0.00% | +3,401+13.5% | Added |
| Sanctuary Advisors, LLC | 29,619 | $550.6K | 0.00% | −564−1.9% | Reduced |
| Vontobel Holding Ltd. | 29,891 | $555.7K | 0.00% | +9,812+48.9% | Added |
| Truist Financial Corp | 31,100 | $578.1K | 0.00% | −2,756−8.1% | Reduced |
| Pictet Asset Management Holding SA | 35,491 | $659.8K | 0.00% | +2,099+6.3% | Added |
| Maryland State Retirement & Pension System | 35,626 | $662.3K | 0.01% | −655−1.8% | Reduced |
| Amundi | 36,691 | $682.1K | 0.00% | +24,391+198.3% | Added |
| XTX Topco Ltd | 37,178 | $691.1K | 0.01% | −87,842−70.3% | Reduced |
| ProShare Advisors LLC | 37,370 | $694.7K | 0.00% | −9,358−20.0% | Reduced |
| Twin Tree Management, LP | 38,075 | $707.8K | 0.15% | +12,941+51.5% | Added |
| Sterling Capital Management LLC | 38,236 | $710.8K | 0.01% | −30,566−44.4% | Reduced |
| Entropy Technologies, LP | 38,507 | $715.8K | 0.03% | +38,507 | New |
| Themes Management Co LLC | 38,837 | $722.0K | 0.45% | +14,098+57.0% | Added |
| Oppenheimer & Co Inc | 41,615 | $773.6K | 0.01% | +7,634+22.5% | Added |
| Quantinno Capital Management LP | 41,705 | $775.3K | 0.00% | +30,419+269.5% | Added |
| Blackstone Group Inc. | 42,414 | $788.5K | 0.00% | +42,414 | New |
| Cresset Asset Management, LLC | 42,556 | $791.1K | 0.00% | +56+0.1% | Added |
| Barclays PLC | 43,790 | $814.1K | 0.00% | −330,216−88.3% | Reduced |
| Neo Ivy Capital Management | 44,607 | $829.2K | 0.22% | +44,607 | New |
| Hudson Bay Capital Management LP | 46,270 | $860.2K | 0.01% | +6,270+15.7% | Added |
| Nicholas Investment Partners, LP | 49,278 | $916.1K | 0.07% | −592,382−92.3% | Reduced |
| 1832 Asset Management L.P. | 50,000 | $929.5K | 0.00% | 00.0% | Unchanged |
| PEAK6 LLC | 50,935 | $946.9K | 0.03% | +43,961+630.4% | Added |
| Thornburg Investment Management Inc | 51,597 | $959.2K | 0.01% | −174,612−77.2% | Reduced |
| KLP Kapitalforvaltning AS | 52,000 | $966.7K | 0.00% | +1,800+3.6% | Added |
| Natixis Advisors, L.P. | 53,672 | $997.0K | 0.00% | −70,776−56.9% | Reduced |
| Asset Management One Co.,Ltd. | 55,723 | $1.03M | 0.00% | +55,723 | New |
| State of Tennessee, Treasury Department | 55,543 | $1.03M | 0.00% | −18,958−25.4% | Reduced |
| Oregon Public Employees Retirement Fund | 55,900 | $1.04M | 0.01% | −800−1.4% | Reduced |
| State Board of Administration of Florida Retirement System | 57,210 | $1.06M | 0.00% | 00.0% | Unchanged |
| Vanguard Investments Australia, Ltd. | 58,950 | $1.10M | 0.00% | +58,950 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 60,504 | $1.12M | 0.01% | −848−1.4% | Reduced |
| Teachers Retirement System of the State of Kentucky | 60,506 | $1.13M | 0.01% | 00.0% | Unchanged |
| Pacer Advisors, Inc. | 64,182 | $1.19M | 0.00% | −15,945−19.9% | Reduced |
| Arizona State Retirement System | 64,638 | $1.20M | 0.01% | −840−1.3% | Reduced |
| Tribune Investment Group LP | 65,000 | $1.21M | 0.81% | +65,000 | New |
| Police & Firemen's Retirement System of New Jersey | 65,346 | $1.21M | 0.01% | +1,570+2.5% | Added |
| Yousif Capital Management, LLC | 65,896 | $1.23M | 0.01% | −1,063−1.6% | Reduced |
| Stifel Financial Corp | 66,658 | $1.24M | 0.00% | +7,577+12.8% | Added |
| Russell Investments Group, Ltd. | 67,659 | $1.26M | 0.00% | +45,579+206.4% | Added |
| Amalgamated Bank | 70,175 | $1.30M | 0.01% | −1,606−2.2% | Reduced |
| Intech Investment Management LLC | 72,432 | $1.35M | 0.01% | −38,190−34.5% | Reduced |
| New York State Common Retirement Fund | 74,790 | $1.39M | 0.00% | −100,885−57.4% | Reduced |
| Capstone Investment Advisors, LLC | 75,700 | $1.41M | 0.01% | 00.0% | Unchanged |