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 2025
Institutional positions in Mirion Technologies, Inc. as of Mar 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
- 230
- +8 vs. Q4 2024
- Shares held
- 185.4M
- −1.13M (−0.6%) vs. Q4 2024
- Total value
- $2.69B
- −$565.0M (−17.4%) vs. Q4 2024
- New holders
- 47
- 93 more added
- Sold out
- 39
- 66 more reduced
2 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2025
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Graham Capital Management, L.P. | 55,154 | $799.7K | 0.03% | −52,594−48.8% | Reduced |
| Voya Investment Management LLC | 55,838 | $809.7K | 0.00% | −4,470−7.4% | Reduced |
| Mariner, LLC | 56,178 | $814.6K | 0.00% | +36,137+180.3% | Added |
| Jefferies Financial Group Inc. | 56,300 | $816.4K | 0.01% | +56,300 | New |
| State Board of Administration of Florida Retirement System | 57,210 | $829.5K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 57,348 | $831.5K | 0.00% | +37,048+182.5% | Added |
| Arizona State Retirement System | 58,214 | $844.1K | 0.01% | +2,608+4.7% | Added |
| Cresset Asset Management, LLC | 58,500 | $848.3K | 0.00% | 00.0% | Unchanged |
| Vontobel Holding Ltd. | 59,895 | $868.5K | 0.00% | +59,895 | New |
| Handelsbanken Fonder AB | 61,031 | $885.0K | 0.00% | 00.0% | Unchanged |
| TT International Asset Management LTD | 62,346 | $904.0K | 0.14% | +62,346 | New |
| CastleKnight Management LP | 63,100 | $915.0K | 0.10% | −36,800−36.8% | Reduced |
| XTX Topco Ltd | 69,269 | $1.00M | 0.05% | +46,716+207.1% | Added |
| First Manhattan Co | 76,932 | $1.12M | 0.00% | −43,225−36.0% | Reduced |
| State of Wyoming | 81,274 | $1.18M | 0.16% | −23,476−22.4% | Reduced |
| Sterling Capital Management LLC | 84,865 | $1.23M | 0.02% | −60.0% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 87,721 | $1.27M | 0.01% | +87,721 | New |
| Aquatic Capital Management LLC | 97,996 | $1.42M | 0.04% | +97,996 | New |
| Royal Bank of Canada | 98,828 | $1.43M | 0.00% | +71,241+258.2% | Added |
| Pathstone Holdings, LLC | 99,681 | $1.45M | 0.01% | +61,443+160.7% | Added |
| Corebridge Financial, Inc. | 101,203 | $1.47M | 0.01% | −1,499−1.5% | Reduced |
| Squarepoint Ops LLC | 107,363 | $1.56M | 0.00% | +52,835+96.9% | Added |
| State of Wisconsin Investment Board | 111,263 | $1.61M | 0.00% | +85,367+329.7% | Added |
| Ameriprise Financial Inc | 111,609 | $1.62M | 0.00% | +18,287+19.6% | Added |
| New York State Common Retirement Fund | 117,028 | $1.70M | 0.00% | −8,394−6.7% | Reduced |
| Manufacturers Life Insurance Company, The | 117,445 | $1.70M | 0.00% | +10,313+9.6% | Added |
| MetLife Investment Management | 122,683 | $1.78M | 0.01% | −1,454−1.2% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 122,962 | $1.78M | 0.00% | +5,366+4.6% | Added |
| State of New Jersey Common Pension Fund D | 126,687 | $1.84M | 0.01% | −2,413−1.9% | Reduced |
| Intech Investment Management LLC | 127,952 | $1.86M | 0.02% | +35,218+38.0% | Added |
| Exchange Traded Concepts, LLC | 134,005 | $1.94M | 0.03% | +45,175+50.9% | Added |
| Legato Capital Management LLC | 136,125 | $1.97M | 0.27% | −9,345−6.4% | Reduced |
| HRT Financial LP | 145,133 | $2.10M | 0.01% | −10,266−6.6% | Reduced |
| Price T Rowe Associates Inc | 150,130 | $2.18M | 0.00% | +9,854+7.0% | Added |
| Dark Forest Capital Management LP | 151,996 | $2.20M | 0.10% | +151,996 | New |
| Balyasny Asset Management LLC | 164,032 | $2.38M | 0.01% | +127,530+349.4% | Added |
| Citigroup Inc | 165,865 | $2.41M | 0.00% | −21,458−11.5% | Reduced |
| Ardsley Advisory Partners LP | 175,000 | $2.54M | 0.59% | +50,000+40.0% | Added |
| California State Teachers Retirement System | 177,403 | $2.57M | 0.00% | −2,844−1.6% | Reduced |
| Envestnet Asset Management Inc | 177,968 | $2.58M | 0.00% | +158,582+818.0% | Added |
| Alberta Investment Management Corp | 180,520 | $2.62M | 0.02% | +26,360+17.1% | Added |
| Sandler Capital Management | 181,787 | $2.64M | 0.86% | −390,664−68.2% | Reduced |
| Lazard Asset Management LLC | 191,755 | $2.78M | 0.00% | −87,062−31.2% | Reduced |
| SEI Investments Co | 193,739 | $2.81M | 0.00% | +5,821+3.1% | Added |
| AQR Capital Management LLC | 199,211 | $2.89M | 0.00% | +110,399+124.3% | Added |
| Verition Fund Management LLC | 201,406 | $2.92M | 0.02% | −48,642−19.5% | Reduced |
| Alliancebernstein L.P. | 219,330 | $3.18M | 0.00% | +2,831+1.3% | Added |
| Legal & General Group Plc | 233,729 | $3.39M | 0.00% | +14,031+6.4% | Added |
| Schonfeld Strategic Advisors LLC | 248,969 | $3.61M | 0.02% | −3,717−1.5% | Reduced |
| Barclays PLC | 253,540 | $3.68M | 0.00% | −99,782−28.2% | Reduced |
| Hollow Brook Wealth Management LLC | 256,742 | $3.72M | 1.10% | +46,361+22.0% | Added |
| Deutsche Bank AG | 261,177 | $3.79M | 0.00% | −50,269−16.1% | Reduced |
| Rice Hall James & Associates, LLC | 270,106 | $3.92M | 0.23% | −419−0.2% | Reduced |
| Walleye Capital LLC | 286,320 | $4.15M | 0.05% | +183,169+177.6% | Added |
| JPMorgan Chase & Co | 287,369 | $4.17M | 0.00% | −310,679−51.9% | Reduced |
| Wells Fargo & Company | 291,129 | $4.22M | 0.00% | −3,669−1.2% | Reduced |
| Essex Investment Management Co LLC | 301,873 | $4.38M | 0.91% | −2,382−0.8% | Reduced |
| Rhumbline Advisers | 307,422 | $4.46M | 0.00% | −11,045−3.5% | Reduced |
| First Trust Advisors LP | 317,407 | $4.60M | 0.00% | +208,150+190.5% | Added |
| FMR LLC | 321,791 | $4.67M | 0.00% | +19,502+6.5% | Added |
| Invesco Ltd. | 321,838 | $4.67M | 0.00% | −168,976−34.4% | Reduced |
| Jane Street Group, LLC | 328,184 | $4.76M | 0.01% | +307,505+1,487.0% | Added |
| Susquehanna International Group, LLP | 334,696 | $4.85M | 0.01% | +244,871+272.6% | Added |
| Bastion Asset Management Inc. | 326,580 | $4.89M | 2.63% | +326,580 | New |
| Aperture Investors, LLC | 357,367 | $5.18M | 0.79% | −14,203−3.8% | Reduced |
| Nicholas Investment Partners, LP | 367,256 | $5.33M | 0.55% | −64,098−14.9% | Reduced |
| Roubaix Capital, LLC | 379,098 | $5.50M | 2.86% | +242,458+177.4% | Added |
| Swiss National Bank | 393,200 | $5.70M | 0.00% | +16,400+4.4% | Added |
| TD Asset Management Inc | 415,034 | $6.02M | 0.01% | +7,902+1.9% | Added |
| Tudor Investment Corp Et Al | 430,949 | $6.25M | 0.06% | +265,083+159.8% | Added |
| UBS Asset Management Americas Inc | 434,583 | $6.30M | 0.00% | +34,973+8.8% | Added |
| Kingdon Capital Management, L.L.C. | 450,000 | $6.53M | 1.35% | +50,000+12.5% | Added |
| D. E. Shaw & Co., Inc. | 451,617 | $6.55M | 0.01% | +132,073+41.3% | Added |
| Ensign Peak Advisors, Inc | 496,147 | $7.19M | 0.01% | +23,926+5.1% | Added |
| Telemark Asset Management, LLC | 500,000 | $7.25M | 0.95% | 00.0% | Unchanged |
| Emerald Mutual Fund Advisers Trust | 507,116 | $7.35M | 0.52% | +280,437+123.7% | Added |
| Gabelli Funds LLC | 524,250 | $7.60M | 0.06% | −32,438−5.8% | Reduced |
| Trexquant Investment LP | 567,609 | $8.23M | 0.10% | +114,065+25.1% | Added |
| Goldman Sachs Group Inc | 579,644 | $8.40M | 0.00% | −8,295,814−93.5% | Reduced |
| Bank of America Corp | 588,622 | $8.54M | 0.00% | +386,892+191.8% | Added |
| Allspring Global Investments Holdings, LLC | 596,100 | $8.55M | 0.01% | +75,408+14.5% | Added |
| Gamco Investors, Inc. Et Al | 592,127 | $8.59M | 0.09% | −7,507−1.3% | Reduced |
| Norges Bank | 602,500 | $8.74M | 0.00% | +602,500 | New |
| Renaissance Technologies LLC | 643,700 | $9.33M | 0.01% | +498,686+343.9% | Added |
| Qube Research & Technologies Ltd | 650,207 | $9.43M | 0.01% | +174,088+36.6% | Added |
| Royce & Associates LP | 668,643 | $9.70M | 0.11% | +215,643+47.6% | Added |
| Bank of New York Mellon Corp | 669,138 | $9.70M | 0.00% | +7,709+1.2% | Added |
| Segall Bryant & Hamill, LLC | 711,349 | $10.3M | 0.16% | +236,766+49.9% | Added |
| FIL Ltd | 810,893 | $11.8M | 0.01% | −1,200,000−59.7% | Reduced |
| Arosa Capital Management LP | 868,261 | $12.6M | 8.35% | +375,261+76.1% | Added |
| Emerald Advisers, LLC | 880,089 | $12.8M | 0.57% | +272,098+44.8% | Added |
| Summit Partners Public Asset Management, LLC | 896,000 | $13.0M | 0.62% | +896,000 | New |
| Citadel Advisors LLC | 909,252 | $13.2M | 0.01% | +798,015+717.4% | Added |
| Jennison Associates LLC | 931,867 | $13.5M | 0.01% | +417,553+81.2% | Added |
| Rockefeller Capital Management L.P. | 938,237 | $13.6M | 0.03% | +938,237 | New |
| Pier Capital, LLC | 941,480 | $13.7M | 2.29% | +283,523+43.1% | Added |
| Schwartz Investment Counsel Inc | 954,300 | $13.8M | 0.48% | −395,000−29.3% | Reduced |
| Masters Capital Management LLC | 1,000,000 | $14.5M | 3.07% | 00.0% | Unchanged |
| Victory Capital Management Inc | 1,004,697 | $14.6M | 0.01% | +977,221+3,556.6% | Added |
| Schroder Investment Management Group | 1,122,671 | $16.4M | 0.02% | +447,587+66.3% | Added |