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, Q2 2025
Institutional positions in Mirion Technologies, Inc. as of Jun 30, 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
- 302
- +73 vs. Q1 2025
- Shares held
- 207.4M
- +22.0M (+11.9%) vs. Q1 2025
- Total value
- $4.46B
- +$1.78B (+66.0%) vs. Q1 2025
- New holders
- 103
- 115 more added
- Sold out
- 30
- 62 more reduced
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| EAM Investors, LLC | 208,974 | $4.50M | 0.68% | +208,974 | New |
| Lazard Asset Management LLC | 218,031 | $4.69M | 0.01% | +26,276+13.7% | Added |
| Alliancebernstein L.P. | 229,462 | $4.94M | 0.00% | +10,132+4.6% | Added |
| Robeco Schweiz AG | 230,000 | $4.95M | 0.11% | +230,000 | New |
| Envestnet Asset Management Inc | 232,996 | $5.02M | 0.00% | +55,028+30.9% | Added |
| EAM Global Investors LLC | 236,179 | $5.08M | 1.32% | +236,179 | New |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 236,340 | $5.09M | 0.05% | +148,619+169.4% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 240,549 | $5.18M | 0.01% | +216,360+894.5% | Added |
| Jane Street Group, LLC | 241,544 | $5.20M | 0.01% | −86,640−26.4% | Reduced |
| Legal & General Group Plc | 242,824 | $5.23M | 0.00% | +9,095+3.9% | Added |
| Hollow Brook Wealth Management LLC | 255,916 | $5.51M | 1.61% | −826−0.3% | Reduced |
| Citigroup Inc | 257,101 | $5.54M | 0.00% | +91,236+55.0% | Added |
| Ameriprise Financial Inc | 260,205 | $5.60M | 0.00% | +148,596+133.1% | Added |
| Deutsche Bank AG | 264,877 | $5.70M | 0.00% | +3,700+1.4% | Added |
| Rice Hall James & Associates, LLC | 269,823 | $5.81M | 0.31% | −283−0.1% | Reduced |
| Schonfeld Strategic Advisors LLC | 278,376 | $5.99M | 0.05% | +29,407+11.8% | Added |
| Wells Fargo & Company | 299,657 | $6.45M | 0.00% | +8,528+2.9% | Added |
| Essex Investment Management Co LLC | 299,816 | $6.46M | 1.17% | −2,057−0.7% | Reduced |
| AQR Capital Management LLC | 312,260 | $6.72M | 0.01% | +113,049+56.7% | Added |
| Sona Asset Management (US) LLC | 314,000 | $6.76M | 0.23% | +314,000 | New |
| Rhumbline Advisers | 318,602 | $6.86M | 0.01% | +11,180+3.6% | Added |
| Verition Fund Management LLC | 335,443 | $7.22M | 0.04% | +134,037+66.6% | Added |
| Aperture Investors, LLC | 345,000 | $7.43M | 1.00% | −12,367−3.5% | Reduced |
| SEI Investments Co | 351,039 | $7.56M | 0.01% | +157,300+81.2% | Added |
| Zacks Investment Management | 379,461 | $8.17M | 0.07% | +379,461 | New |
| Axiom Investors LLC | 392,685 | $8.45M | 0.07% | +392,685 | New |
| Moore Capital Management, LP | 407,413 | $8.77M | 0.18% | +407,413 | New |
| Swiss National Bank | 408,800 | $8.80M | 0.01% | +15,600+4.0% | Added |
| Barclays PLC | 411,509 | $8.86M | 0.00% | +157,969+62.3% | Added |
| Concentric Capital Strategies, LP | 412,460 | $8.88M | 0.50% | +412,460 | New |
| Kingdon Capital Management, L.L.C. | 425,000 | $9.15M | 1.77% | −25,000−5.6% | Reduced |
| TD Asset Management Inc | 430,758 | $9.27M | 0.01% | +15,724+3.8% | Added |
| Citadel Advisors LLC | 451,474 | $9.72M | 0.01% | −457,778−50.3% | Reduced |
| Nicholas Investment Partners, LP | 459,864 | $9.90M | 0.88% | +92,608+25.2% | Added |
| Ardsley Advisory Partners LP | 463,220 | $9.97M | 1.63% | +288,220+164.7% | Added |
| Qube Research & Technologies Ltd | 463,977 | $9.99M | 0.01% | −186,230−28.6% | Reduced |
| Telemark Asset Management, LLC | 500,000 | $10.8M | 1.14% | 00.0% | Unchanged |
| Gabelli Funds LLC | 511,314 | $11.0M | 0.08% | −12,936−2.5% | Reduced |
| Allspring Global Investments Holdings, LLC | 556,362 | $11.4M | 0.02% | −39,738−6.7% | Reduced |
| Emerald Mutual Fund Advisers Trust | 553,624 | $11.9M | 0.73% | +46,508+9.2% | Added |
| Shannon River Fund Management LLC | 555,377 | $12.0M | 1.84% | +555,377 | New |
| FIL Ltd | 560,893 | $12.1M | 0.01% | −250,000−30.8% | Reduced |
| Gamco Investors, Inc. Et Al | 562,074 | $12.1M | 0.12% | −30,053−5.1% | Reduced |
| Susquehanna International Group, LLP | 563,825 | $12.1M | 0.02% | +229,129+68.5% | Added |
| Troluce Capital Advisors LLC | 600,000 | $12.9M | 6.58% | +600,000 | New |
| Ensign Peak Advisors, Inc | 601,248 | $12.9M | 0.02% | +105,101+21.2% | Added |
| Goldman Sachs Group Inc | 638,261 | $13.7M | 0.00% | +58,617+10.1% | Added |
| Franklin Resources Inc | 668,159 | $14.4M | 0.00% | +668,159 | New |
| Bank of New York Mellon Corp | 669,301 | $14.4M | 0.00% | +1630.0% | Added |
| TCW Group Inc | 731,465 | $15.7M | 0.12% | +731,465 | New |
| Royce & Associates LP | 790,094 | $17.0M | 0.17% | +121,451+18.2% | Added |
| JPMorgan Chase & Co | 825,269 | $17.8M | 0.00% | +537,900+187.2% | Added |
| Pier Capital, LLC | 871,028 | $18.8M | 2.86% | −70,452−7.5% | Reduced |
| FMR LLC | 946,995 | $20.4M | 0.00% | +625,204+194.3% | Added |
| Schwartz Investment Counsel Inc | 954,300 | $20.5M | 0.68% | 00.0% | Unchanged |
| Victory Capital Management Inc | 958,674 | $20.6M | 0.01% | −46,023−4.6% | Reduced |
| Emerald Advisers, LLC | 965,245 | $20.8M | 0.76% | +85,156+9.7% | Added |
| D. E. Shaw & Co., Inc. | 967,455 | $20.8M | 0.02% | +515,838+114.2% | Added |
| William Blair Investment Management, LLC | 1,005,847 | $21.7M | 0.06% | −725,544−41.9% | Reduced |
| Summit Partners Public Asset Management, LLC | 1,046,000 | $22.5M | 0.88% | +150,000+16.7% | Added |
| Rockefeller Capital Management L.P. | 1,062,358 | $22.9M | 0.05% | +124,121+13.2% | Added |
| Jennison Associates LLC | 1,072,089 | $23.1M | 0.01% | +140,222+15.0% | Added |
| Segall Bryant & Hamill, LLC | 1,089,217 | $23.5M | 0.33% | +377,868+53.1% | Added |
| UBS Asset Management Americas Inc | 1,090,299 | $23.5M | 0.00% | +655,716+150.9% | Added |
| Schroder Investment Management Group | 1,120,605 | $24.1M | 0.02% | −2,066−0.2% | Reduced |
| Chescapmanager LLC | 1,327,895 | $28.6M | 4.80% | 00.0% | Unchanged |
| ACK Asset Management LLC | 1,337,000 | $28.8M | 3.78% | −281,356−17.4% | Reduced |
| Silvercrest Asset Management Group LLC | 1,379,635 | $29.7M | 0.20% | +68,675+5.2% | Added |
| Bank of America Corp | 1,383,213 | $29.8M | 0.00% | +794,591+135.0% | Added |
| Hood River Capital Management LLC | 1,470,273 | $31.7M | 0.44% | +1,470,273 | New |
| Morgan Stanley | 1,474,710 | $31.8M | 0.00% | +252,633+20.7% | Added |
| Nuveen, LLC | 1,550,771 | $33.4M | 0.01% | +162,347+11.7% | Added |
| Loomis Sayles & Co L P | 1,591,688 | $34.3M | 0.04% | +1,591,688 | New |
| ArrowMark Colorado Holdings LLC | 1,677,512 | $36.1M | 0.65% | −511,414−23.4% | Reduced |
| Charles Schwab Investment Management Inc | 1,683,977 | $36.3M | 0.01% | +42,902+2.6% | Added |
| UBS Group AG | 1,704,697 | $36.7M | 0.01% | +207,491+13.9% | Added |
| Royal Bank of Canada | 1,714,821 | $36.9M | 0.01% | +1,615,993+1,635.2% | Added |
| Northern Trust Corp | 1,932,856 | $41.6M | 0.01% | −38,326−1.9% | Reduced |
| Raymond James Financial Inc | 1,972,536 | $42.5M | 0.01% | +254,688+14.8% | Added |
| Driehaus Capital Management LLC | 2,007,888 | $43.2M | 0.35% | +2,007,888 | New |
| Select Equity Group, L.P. | 2,027,559 | $43.7M | 0.19% | −264,677−11.5% | Reduced |
| Bornite Capital Management LP | 2,051,700 | $44.2M | 4.42% | −12,600−0.6% | Reduced |
| Arrowstreet Capital, Limited Partnership | 2,281,180 | $49.1M | 0.03% | −508,329−18.2% | Reduced |
| Lord, Abbett & Co. LLC | 2,459,638 | $53.0M | 0.17% | +59,774+2.5% | Added |
| Invesco Ltd. | 2,617,252 | $56.3M | 0.01% | +2,295,414+713.2% | Added |
| Millennium Management LLC | 2,881,947 | $62.0M | 0.06% | +314,287+12.2% | Added |
| Corsair Capital Management, L.P. | 3,025,412 | $65.1M | 12.48% | −46,591−1.5% | Reduced |
| Artemis Investment Management LLP | 3,028,968 | $65.2M | 0.84% | +30,533+1.0% | Added |
| American Century Companies Inc | 3,373,352 | $72.6M | 0.04% | −59,462−1.7% | Reduced |
| Massachusetts Financial Services Co | 3,833,668 | $82.5M | 0.03% | +3,833,668 | New |
| Swedbank AB | 4,126,035 | $88.8M | 0.10% | +4,126,035 | New |
| Alyeska Investment Group, L.P. | 4,446,853 | $95.7M | 0.34% | +296,591+7.1% | Added |
| Geode Capital Management, LLC | 4,739,240 | $102.0M | 0.01% | +4710.0% | Added |
| State Street Corp | 5,094,072 | $109.7M | 0.00% | −45,497−0.9% | Reduced |
| Maverick Capital LtdSuperinvestorMaverick Capital | 5,308,038 | $114.3M | 1.75% | −2,748,071−34.1% | Reduced |
| Brown Advisory Inc | 5,400,405 | $116.3M | 0.15% | −160,056−2.9% | Reduced |
| Dimensional Fund Advisors LP | 6,947,380 | $149.6M | 0.03% | −416,574−5.7% | Reduced |
| Cooperman Leon G | 7,125,000 | $153.4M | 5.39% | +100,000+1.4% | Added |
| Janus Henderson Group PLC | 7,988,396 | $172.0M | 0.08% | −599,268−7.0% | Reduced |
| BlackRock, Inc. | 17,012,641 | $366.3M | 0.01% | +872,717+5.4% | Added |