Mirion TechnologiesMIR
13F holders, Q4 2024 (December 31)224holders +48
63new positions
23sold out
11famous investors
$17.45avg. 13F price*
At the end of Q4 2024, 224 institutions reported holding Mirion Technologies Inc. (MIR) in their 13F filings, up 48 from Q3 2024. 63 opened new positions and 23 sold out. The largest holders were Vanguard Group Inc. ($417.2M), T. Rowe Price Investment Management, Inc. ($355.8M) and BlackRock, Inc. ($281.0M). 11 famous investors held it, including Leon Cooperman (4.6% of Omega Advisors (Leon Cooperman)'s portfolio), Lee Ainslie (1.9% of Maverick Capital's portfolio) and Stanley Druckenmiller (0.2% of Duquesne Family Office's portfolio).
- Company
- Mirion Technologies Inc.
- CUSIP
- 60471A101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2024 → Q4 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 63 | $422.3M |
| Exits | 23 | $67.3M |
All 13F filers, Q3 2024 → Q4 2024: 43,530,843 shares bought and 55,697,136 shares sold, net −12,166,293 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 224 holders
| Vanguard Group Inc. | 0.01% | Add +1.0% | 23,909,802 | $417.2M |
| T. Rowe Price Investment Management, Inc. | 0.22% | Add +1.1% | 20,388,146 | $355.8M |
| BlackRock, Inc. | 0.01% | Add +0.8% | 16,102,061 | $281.0M |
| Goldman Sachs Group Inc. | 0.03% | Reduce -74.5% | 8,875,458 | $154.9M |
| Janus Henderson Group PLC | 0.07% | Add +2.8% | 8,330,495 | $145.4M |
| Dimensional Fund Advisors LP | 0.03% | Add +2.5% | 7,185,694 | $125.4M |
| Omega Advisors (Leon Cooperman) | 4.64% | Reduce -12.5% | 7,025,000 | $122.6M |
| Maverick Capital | 1.94% | Add +3267.9% | 6,177,611 | $107.8M |
| Swedbank AB | 0.13% | Reduce -40.7% | 6,060,500 | $105.8M |
| State Street Corp. | 0.00% | Reduce -3.1% | 5,201,092 | $90.8M |
| Geode Capital Management, LLC | 0.01% | Add +1.5% | 4,571,828 | $79.8M |
| Arrowstreet Capital, Limited Partnership | 0.06% | Add +29948.6% | 4,214,921 | $73.6M |
| Brown Advisory Inc. | 0.08% | New | 3,812,024 | $66.5M |
| Alyeska Investment Group, L.P. | 0.25% | Reduce -51.9% | 3,761,315 | $65.6M |
| Corsair Capital Management, L.P. | 11.91% | Add +0.3% | 3,169,620 | $55.3M |
| Millennium Management | 0.05% | Add +100.6% | 3,105,374 | $54.2M |
| William Blair Investment Management, LLC | 0.13% | New | 3,041,016 | $53.1M |
| American Century Companies Inc. | 0.02% | Reduce -37.4% | 2,385,033 | $41.6M |
| Lord, Abbett & Co. LLC | 0.14% | Add +70.7% | 2,368,734 | $41.3M |
| ArrowMark Colorado Holdings LLC | 0.56% | Reduce -21.1% | 2,368,550 | $41.3M |
| Select Equity Group, L.P. | 0.16% | Reduce -46.4% | 2,313,419 | $40.4M |
| Artemis Investment Management LLP | 0.54% | New | 2,186,553 | $38.2M |
| Bornite Capital Management LP | 4.97% | New | 2,117,000 | $36.9M |
| Northern Trust Corp. | 0.01% | Add +19.1% | 2,041,589 | $35.6M |
| FIL Ltd | 0.03% | Reduce -19.9% | 2,010,893 | $35.1M |
| ACK Asset Management LLC | 4.24% | Reduce -57.3% | 1,815,000 | $31.7M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +2.5% | 1,599,211 | $27.9M |
| UBS Group AG | 0.01% | Add +140.0% | 1,546,481 | $27.0M |
| Nuveen Asset Management, LLC | 0.01% | Add +72.8% | 1,371,004 | $23.9M |
| Schwartz Investment Counsel Inc. | 0.85% | Reduce -11.2% | 1,349,300 | $23.5M |
| Chescapmanager LLC | 4.22% | Add +27.5% | 1,327,895 | $23.2M |
| Munro Partners | 0.68% | New | 1,122,215 | $19.6M |
| Morgan Stanley | 0.00% | Add +20.7% | 1,048,820 | $18.3M |
| Masters Capital Management LLC | 2.98% | New | 1,000,000 | $17.4M |
| Raymond James Financial Inc. | 0.01% | — | 983,610 | $17.2M |
| Silvercrest Asset Management Group LLC | 0.11% | New | 968,561 | $16.9M |
| Greenhouse Funds LLLP | 0.54% | New | 700,623 | $12.2M |
| Schroder Investment Management Group | 0.01% | New | 675,084 | $11.8M |
| Bank of New York Mellon Corp | 0.00% | Add +2.0% | 661,429 | $11.5M |
| CI Investments Inc. | 0.04% | New | 659,720 | $11.5M |
| Pier Capital, LLC | 1.64% | New | 657,957 | $11.5M |
| Emerald Advisers, LLC | 0.41% | New | 607,991 | $10.6M |
| GAMCO Investors | 0.11% | Reduce -5.5% | 599,634 | $10.5M |
| JPMorgan Chase & Co. | 0.00% | Add +171.7% | 598,048 | $10.4M |
| Sandler Capital Management | 1.64% | Add +65.9% | 572,451 | $10.0M |
| Gabelli Funds LLC | 0.07% | Reduce -9.7% | 556,688 | $9.7M |
| Jennison Associates LLC | 0.01% | Add +10.5% | 514,314 | $9.0M |
| Allspring Global Investments Holdings, LLC | 0.01% | Add +1532.2% | 520,692 | $8.8M |
| Telemark Asset Management, LLC | 0.87% | Add +25.0% | 500,000 | $8.7M |
| Arosa Capital Management LP | 5.73% | New | 493,000 | $8.6M |
| Invesco Ltd. | 0.00% | Add +85.7% | 490,814 | $8.6M |
| Qube Research & Technologies Ltd | 0.01% | Reduce -23.4% | 476,119 | $8.3M |
| Segall Bryant & Hamill, LLC | 0.11% | Add +39.7% | 474,583 | $8.3M |
| Ensign Peak Advisors, Inc | 0.01% | New | 472,221 | $8.2M |
| Trexquant Investment LP | 0.09% | New | 453,544 | $7.9M |
| Royce & Associates LP | 0.07% | Reduce -6.4% | 453,000 | $7.9M |
| Nicholas Investment Partners, LP | 0.73% | Reduce -1.6% | 431,354 | $7.5M |
| TD Asset Management Inc | 0.01% | Add +4.7% | 407,132 | $7.1M |
| Kingdon Capital Management, L.L.C. | 1.19% | New | 400,000 | $7.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +36.5% | 399,610 | $7.0M |
| Swiss National Bank | 0.00% | Add +0.5% | 376,800 | $6.6M |
| Aperture Investors, LLC | 0.84% | Add +0.6% | 371,570 | $6.5M |
| Discovery Capital Management, LLC / CT | 0.43% | New | 360,000 | $6.3M |
| Barclays PLC | 0.00% | Add +14.8% | 353,322 | $6.2M |
| Duquesne Family Office | 0.17% | New | 342,700 | $6.0M |
| D. E. Shaw & Co. | 0.01% | New | 319,544 | $5.6M |
| Rhumbline Advisers | 0.01% | Add +2.7% | 318,467 | $5.6M |
| Deutsche Bank AG | 0.00% | Add +82.7% | 311,446 | $5.4M |
| Essex Investment Management Co. LLC | 0.95% | Reduce -13.4% | 304,255 | $5.3M |
| FMR LLC | 0.00% | Add +1583.4% | 302,289 | $5.3M |
| Walleye Trading LLC | 0.10% | New | 296,844 | $5.2M |
| Wells Fargo & Company | 0.00% | Add +30.6% | 294,798 | $5.1M |
| Global IMC LLC | 0.88% | New | 282,534 | $4.9M |
| Paradoxiom Capital L.P. | 2.02% | — | 280,335 | $4.9M |
| Lazard Asset Management LLC | 0.01% | Reduce -31.7% | 278,817 | $4.9M |
| Rice Hall James & Associates, LLC | 0.26% | Reduce -23.3% | 270,525 | $4.7M |
| Informed Momentum Co LLC | 0.64% | New | 257,777 | $4.5M |
| Schonfeld Strategic Advisors LLC | 0.03% | New | 252,686 | $4.4M |
| Verition Fund Management LLC | 0.02% | Add +32.9% | 250,048 | $4.4M |
| Scopus Asset Management, L.P. | 0.16% | New | 246,060 | $4.3M |
| Bridgewater Associates | 0.02% | New | 243,755 | $4.3M |
| Marshall Wace, LLP | 0.01% | Add +287.5% | 239,439 | $4.2M |
| Advantage Alpha Capital Partners LP | 0.97% | New | 235,565 | $4.1M |
| Emerald Mutual Fund Advisers Trust | 0.24% | New | 226,679 | $4.0M |
| Legal & General Group Plc | 0.00% | Add +13.4% | 219,698 | $3.8M |
| Alliancebernstein L.P. | 0.00% | Reduce -1.9% | 216,499 | $3.8M |
| Hollow Brook Wealth Management LLC | 1.13% | Reduce -3.1% | 210,381 | $3.7M |
| Bank of America Corp. | 0.00% | Reduce -14.2% | 201,730 | $3.5M |
| Sei Investments Co. | 0.00% | New | 187,918 | $3.3M |
| Citigroup Inc. | 0.00% | Add +7.3% | 187,323 | $3.3M |
| California State Teachers Retirement System | 0.00% | Reduce -1.1% | 180,247 | $3.1M |
| Yaupon Capital Management LP | 0.20% | Reduce -16.6% | 178,554 | $3.1M |
| Polar Asset Management Partners Inc. | 0.06% | New | 174,919 | $3.1M |
| Tudor Investment Corporation | 0.03% | Add +153.2% | 165,866 | $2.9M |
| Wolverine Asset Management LLC | 0.21% | New | 162,000 | $2.8M |
| M&T Bank Corp | 0.01% | Reduce -20.0% | 160,116 | $2.8M |
| HRT Financial LP | 0.01% | New | 155,399 | $2.7M |
| Alberta Investment Management Corp | 0.02% | Reduce -20.5% | 154,160 | $2.7M |
| Legato Capital Management LLC | 0.33% | Reduce -20.1% | 145,470 | $2.5M |
| Renaissance Technologies | 0.00% | Add +28.3% | 145,014 | $2.5M |
"% of holder's portfolio" is MIR's weight in each manager's 13F, not the share of Mirion Technologies Inc. the manager owns.