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 |
|---|---|---|---|---|---|
| Vanguard Group Inc | 23,909,802 | $417.2M | 0.01% | +227,178+1.0% | Added |
| T. Rowe Price Investment Management, Inc. | 20,388,146 | $355.8M | 0.22% | +216,258+1.1% | Added |
| BlackRock, Inc. | 16,102,061 | $281.0M | 0.01% | +129,141+0.8% | Added |
| Goldman Sachs Group Inc | 8,875,458 | $154.9M | 0.03% | −25,933,562−74.5% | Reduced |
| Janus Henderson Group PLC | 8,330,495 | $145.4M | 0.07% | +229,718+2.8% | Added |
| Dimensional Fund Advisors LP | 7,185,694 | $125.4M | 0.03% | +171,918+2.5% | Added |
| Cooperman Leon G | 7,025,000 | $122.6M | 4.64% | −1,000,000−12.5% | Reduced |
| Maverick Capital LtdSuperinvestorMaverick Capital | 6,177,611 | $107.8M | 1.94% | +5,994,184+3,267.9% | Added |
| Swedbank AB | 6,060,500 | $105.8M | 0.13% | −4,158,500−40.7% | Reduced |
| State Street Corp | 5,201,092 | $90.8M | 0.00% | −164,636−3.1% | Reduced |
| Geode Capital Management, LLC | 4,571,828 | $79.8M | 0.01% | +69,373+1.5% | Added |
| Arrowstreet Capital, Limited Partnership | 4,214,921 | $73.6M | 0.06% | +4,200,894+29,948.6% | Added |
| Brown Advisory Inc | 3,812,024 | $66.5M | 0.08% | +3,812,024 | New |
| Alyeska Investment Group, L.P. | 3,761,315 | $65.6M | 0.25% | −4,057,311−51.9% | Reduced |
| Corsair Capital Management, L.P. | 3,169,620 | $55.3M | 11.91% | +8,770+0.3% | Added |
| Millennium Management LLC | 3,105,374 | $54.2M | 0.05% | +1,557,077+100.6% | Added |
| William Blair Investment Management, LLC | 3,041,016 | $53.1M | 0.13% | +3,041,016 | New |
| American Century Companies Inc | 2,385,033 | $41.6M | 0.02% | −1,427,563−37.4% | Reduced |
| Lord, Abbett & Co. LLC | 2,368,734 | $41.3M | 0.13% | +981,199+70.7% | Added |
| ArrowMark Colorado Holdings LLC | 2,368,550 | $41.3M | 0.56% | −631,510−21.0% | Reduced |
| Select Equity Group, L.P. | 2,313,419 | $40.4M | 0.16% | −2,004,285−46.4% | Reduced |
| Artemis Investment Management LLP | 2,186,553 | $38.2M | 0.54% | +2,186,553 | New |
| Bornite Capital Management LP | 2,117,000 | $36.9M | 4.97% | +2,117,000 | New |
| Northern Trust Corp | 2,041,589 | $35.6M | 0.01% | +328,164+19.2% | Added |
| FIL Ltd | 2,010,893 | $35.1M | 0.03% | −500,000−19.9% | Reduced |
| ACK Asset Management LLC | 1,815,000 | $31.7M | 4.24% | −2,431,300−57.3% | Reduced |
| Charles Schwab Investment Management Inc | 1,599,211 | $27.9M | 0.01% | +39,635+2.5% | Added |
| UBS Group AG | 1,546,481 | $27.0M | 0.01% | +902,024+140.0% | Added |
| Nuveen Asset Management, LLC | 1,371,004 | $23.9M | 0.01% | +577,620+72.8% | Added |
| Schwartz Investment Counsel Inc | 1,349,300 | $23.5M | 0.85% | −170,000−11.2% | Reduced |
| Chescapmanager LLC | 1,327,895 | $23.2M | 4.22% | +286,494+27.5% | Added |
| Munro Partners | 1,122,215 | $19.6M | 0.68% | +1,122,215 | New |
| Morgan Stanley | 1,048,820 | $18.3M | 0.00% | +179,618+20.7% | Added |
| Masters Capital Management LLC | 1,000,000 | $17.4M | 2.98% | +1,000,000 | New |
| Raymond James Financial Inc | 983,610 | $17.2M | 0.01% | +983,610 | New |
| Silvercrest Asset Management Group LLC | 968,561 | $16.9M | 0.11% | +968,561 | New |
| Greenhouse Funds LLLP | 700,623 | $12.2M | 0.54% | +700,623 | New |
| Schroder Investment Management Group | 675,084 | $11.8M | 0.01% | +675,084 | New |
| Bank of New York Mellon Corp | 661,429 | $11.5M | 0.00% | +13,248+2.0% | Added |
| Ci Investments Inc. | 659,720 | $11.5M | 0.04% | +659,720 | New |
| Pier Capital, LLC | 657,957 | $11.5M | 1.64% | +657,957 | New |
| Emerald Advisers, LLC | 607,991 | $10.6M | 0.41% | +607,991 | New |
| Gamco Investors, Inc. Et Al | 599,634 | $10.5M | 0.11% | −35,136−5.5% | Reduced |
| JPMorgan Chase & Co | 598,048 | $10.4M | 0.00% | +377,915+171.7% | Added |
| Sandler Capital Management | 572,451 | $9.99M | 1.63% | +227,451+65.9% | Added |
| Gabelli Funds LLC | 556,688 | $9.71M | 0.07% | −60,000−9.7% | Reduced |
| Jennison Associates LLC | 514,314 | $8.97M | 0.01% | +48,761+10.5% | Added |
| Allspring Global Investments Holdings, LLC | 520,692 | $8.81M | 0.01% | +488,790+1,532.2% | Added |
| Telemark Asset Management, LLC | 500,000 | $8.72M | 0.87% | +100,000+25.0% | Added |
| Arosa Capital Management LP | 493,000 | $8.60M | 5.66% | +493,000 | New |
| Invesco Ltd. | 490,814 | $8.56M | 0.00% | +226,566+85.7% | Added |
| Qube Research & Technologies Ltd | 476,119 | $8.31M | 0.01% | −145,606−23.4% | Reduced |
| Segall Bryant & Hamill, LLC | 474,583 | $8.28M | 0.11% | +134,909+39.7% | Added |
| Ensign Peak Advisors, Inc | 472,221 | $8.24M | 0.01% | +472,221 | New |
| Trexquant Investment LP | 453,544 | $7.91M | 0.09% | +453,544 | New |
| Royce & Associates LP | 453,000 | $7.90M | 0.07% | −31,000−6.4% | Reduced |
| Nicholas Investment Partners, LP | 431,354 | $7.53M | 0.66% | −6,811−1.6% | Reduced |
| TD Asset Management Inc | 407,132 | $7.10M | 0.01% | +18,176+4.7% | Added |
| Kingdon Capital Management, L.L.C. | 400,000 | $6.98M | 1.19% | +400,000 | New |
| UBS Asset Management Americas Inc | 399,610 | $6.97M | 0.00% | +106,773+36.5% | Added |
| Swiss National Bank | 376,800 | $6.58M | 0.00% | +2,000+0.5% | Added |
| Aperture Investors, LLC | 371,570 | $6.48M | 0.84% | +2,344+0.6% | Added |
| Discovery Capital Management, LLC | 360,000 | $6.28M | 0.43% | +360,000 | New |
| Barclays PLC | 353,322 | $6.17M | 0.00% | +45,642+14.8% | Added |
| Duquesne Family Office LLCSuperinvestorDuquesne Family Office | 342,700 | $5.98M | 0.17% | +342,700 | New |
| D. E. Shaw & Co., Inc. | 319,544 | $5.58M | 0.01% | +319,544 | New |
| Rhumbline Advisers | 318,467 | $5.56M | 0.00% | +8,288+2.7% | Added |
| Deutsche Bank AG | 311,446 | $5.43M | 0.00% | +141,008+82.7% | Added |
| Essex Investment Management Co LLC | 304,255 | $5.31M | 0.95% | −47,223−13.4% | Reduced |
| FMR LLC | 302,289 | $5.27M | 0.00% | +284,332+1,583.4% | Added |
| Walleye Trading LLC | 296,844 | $5.18M | 0.10% | +296,844 | New |
| Wells Fargo & Company | 294,798 | $5.14M | 0.00% | +69,030+30.6% | Added |
| EAM Global Investors LLC | 282,534 | $4.93M | 0.88% | +282,534 | New |
| Paradoxiom Capital L.P. | 280,335 | $4.89M | 2.02% | +280,335 | New |
| Lazard Asset Management LLC | 278,817 | $4.87M | 0.01% | −129,220−31.7% | Reduced |
| Rice Hall James & Associates, LLC | 270,525 | $4.72M | 0.26% | −82,212−23.3% | Reduced |
| EAM Investors, LLC | 257,777 | $4.50M | 0.64% | +257,777 | New |
| Schonfeld Strategic Advisors LLC | 252,686 | $4.41M | 0.03% | +252,686 | New |
| Verition Fund Management LLC | 250,048 | $4.36M | 0.02% | +61,838+32.9% | Added |
| Scopus Asset Management, L.P. | 246,060 | $4.29M | 0.16% | +246,060 | New |
| Bridgewater Associates, LP | 243,755 | $4.25M | 0.02% | +243,755 | New |
| Marshall Wace, LLP | 239,439 | $4.18M | 0.01% | +177,643+287.5% | Added |
| Advantage Alpha Capital Partners LP | 235,565 | $4.11M | 0.97% | +235,565 | New |
| Emerald Mutual Fund Advisers Trust | 226,679 | $3.96M | 0.24% | +226,679 | New |
| Legal & General Group Plc | 219,698 | $3.83M | 0.00% | +25,887+13.4% | Added |
| Alliancebernstein L.P. | 216,499 | $3.78M | 0.00% | −4,158−1.9% | Reduced |
| Hollow Brook Wealth Management LLC | 210,381 | $3.67M | 1.13% | −6,797−3.1% | Reduced |
| Bank of America Corp | 201,730 | $3.52M | 0.00% | −33,302−14.2% | Reduced |
| SEI Investments Co | 187,918 | $3.28M | 0.00% | +187,918 | New |
| Citigroup Inc | 187,323 | $3.27M | 0.00% | +12,774+7.3% | Added |
| California State Teachers Retirement System | 180,247 | $3.15M | 0.00% | −1,994−1.1% | Reduced |
| Yaupon Capital Management LP | 178,554 | $3.12M | 0.20% | −35,488−16.6% | Reduced |
| Polar Asset Management Partners Inc. | 174,919 | $3.05M | 0.05% | +174,919 | New |
| Tudor Investment Corp Et Al | 165,866 | $2.89M | 0.03% | +100,367+153.2% | Added |
| Wolverine Asset Management LLC | 162,000 | $2.83M | 0.05% | +162,000 | New |
| M&T Bank Corp | 160,116 | $2.79M | 0.01% | −40,112−20.0% | Reduced |
| HRT Financial LP | 155,399 | $2.71M | 0.01% | +155,399 | New |
| Alberta Investment Management Corp | 154,160 | $2.69M | 0.02% | −39,839−20.5% | Reduced |
| Legato Capital Management LLC | 145,470 | $2.54M | 0.33% | −36,498−20.1% | Reduced |
| Renaissance Technologies LLC | 145,014 | $2.53M | 0.00% | +32,014+28.3% | Added |