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, Q3 2023
Institutional positions in Mirion Technologies, Inc. as of Sep 30, 2023. 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
- 127
- +4 vs. Q2 2023
- Shares held
- 187.9M
- +6.55M (+3.6%) vs. Q2 2023
- Total value
- $1.40B
- −$128.8M (−8.4%) vs. Q2 2023
- New holders
- 16
- 63 more added
- Sold out
- 12
- 28 more reduced
1 institution that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2023: 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, Q3 2023
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Goldman Sachs Group Inc | 34,800,585 | $260.0M | 0.07% | +2940.0% | Added |
| Vanguard Group Inc | 21,327,974 | $159.3M | 0.00% | +2,029,698+10.5% | Added |
| T. Rowe Price Investment Management, Inc. | 19,591,772 | $146.4M | 0.10% | +568,177+3.0% | Added |
| BlackRock Inc. | 14,854,608 | $111.0M | 0.00% | +990,619+7.1% | Added |
| Swedbank AB | 11,237,169 | $83.9M | 0.15% | +854,169+8.2% | Added |
| Janus Henderson Group PLC | 8,727,876 | $65.2M | 0.04% | −976,433−10.1% | Reduced |
| Cooperman Leon G | 7,400,000 | $55.3M | 2.89% | 00.0% | Unchanged |
| Alyeska Investment Group, L.P. | 6,273,088 | $46.9M | 0.32% | +2,403,595+62.1% | Added |
| P2 Capital Partners, LLC | 5,372,708 | $40.1M | 5.29% | +983,137+22.4% | Added |
| State Street Corp | 5,119,921 | $38.2M | 0.00% | +283,133+5.9% | Added |
| Nomura Holdings Inc | 4,422,635 | $33.0M | 0.36% | −563,839−11.3% | Reduced |
| Geode Capital Management, LLC | 3,875,831 | $29.0M | 0.00% | +717,774+22.7% | Added |
| Kohlberg Kravis Roberts & Co. L.P. | 3,445,894 | $25.7M | 0.90% | 00.0% | Unchanged |
| ArrowMark Colorado Holdings LLC | 3,298,853 | $24.6M | 0.30% | +412,690+14.3% | Added |
| Corsair Capital Management, L.P. | 2,699,111 | $20.2M | 6.93% | +481,968+21.7% | Added |
| Dimensional Fund Advisors LP | 2,667,090 | $19.9M | 0.01% | +1,307,273+96.1% | Added |
| First Manhattan Co | 2,079,399 | $15.5M | 0.06% | +271,825+15.0% | Added |
| Pantechnicon Advisors LLP | 1,860,000 | $13.9M | 6.00% | +660,000+55.0% | Added |
| American Century Companies Inc | 1,857,904 | $13.9M | 0.01% | +488,171+35.6% | Added |
| Northern Trust Corp | 1,749,625 | $13.1M | 0.00% | +130,518+8.1% | Added |
| Lord, Abbett & Co. LLC | 1,656,586 | $12.4M | 0.05% | +102,792+6.6% | Added |
| Morgan Stanley | 1,645,010 | $12.3M | 0.00% | +180,721+12.3% | Added |
| Schwartz Investment Counsel Inc | 1,565,000 | $11.7M | 0.50% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 1,444,797 | $10.8M | 0.00% | +352,573+32.3% | Added |
| Crestline Management, LP | 1,400,000 | $10.5M | 1.25% | +40,914+3.0% | Added |
| Nuveen Asset Management, LLC | 1,378,226 | $10.3M | 0.00% | +72,073+5.5% | Added |
| Bpifrance SA | 1,286,446 | $9.61M | 0.24% | 00.0% | Unchanged |
| Barrow Hanley Mewhinney & Strauss LLC | 922,550 | $6.89M | 0.03% | −277,583−23.1% | Reduced |
| Gamco Investors, Inc. Et Al | 796,295 | $5.95M | 0.07% | +566,070+245.9% | Added |
| CIBC World Markets Corp | 775,000 | $5.79M | 0.06% | 00.0% | Unchanged |
| Adage Capital Partners GP, L.L.C. | 767,772 | $5.74M | 0.01% | +17,772+2.4% | Added |
| Gabelli Funds LLC | 728,000 | $5.44M | 0.04% | +6,000+0.8% | Added |
| Bank of New York Mellon Corp | 717,664 | $5.36M | 0.00% | +44,710+6.6% | Added |
| Pentwater Capital Management LP | 578,186 | $4.32M | 0.04% | −271,814−32.0% | Reduced |
| Carlson Capital L P | 563,939 | $4.21M | 0.33% | +12,465+2.3% | Added |
| Citigroup Inc | 504,546 | $3.77M | 0.01% | +439,905+680.5% | Added |
| Roubaix Capital, LLC | 501,988 | $3.75M | 2.76% | +2,509+0.5% | Added |
| FMR LLC | 493,250 | $3.68M | 0.00% | −4,213,833−89.5% | Reduced |
| Citadel Advisors LLC | 437,903 | $3.27M | 0.00% | +426,054+3,595.7% | Added |
| Sculptor Capital LP | 409,405 | $3.06M | 0.07% | −50,000−10.9% | Reduced |
| Swiss National Bank | 383,200 | $2.86M | 0.00% | +28,100+7.9% | Added |
| TD Asset Management Inc | 336,054 | $2.51M | 0.00% | +14,496+4.5% | Added |
| Select Equity Group, L.P. | 330,161 | $2.47M | 0.01% | +46,863+16.5% | Added |
| Russell Investments Group, Ltd. | 324,213 | $2.42M | 0.00% | +13,607+4.4% | Added |
| Rhumbline Advisers | 318,674 | $2.38M | 0.00% | +2,591+0.8% | Added |
| Essex Investment Management Co LLC | 259,212 | $1.94M | 0.32% | +259,212 | New |
| M&T Bank Corp | 240,706 | $1.80M | 0.01% | +40,314+20.1% | Added |
| JPMorgan Chase & Co | 237,766 | $1.78M | 0.00% | +5,128+2.2% | Added |
| Royce & Associates LP | 225,000 | $1.68M | 0.02% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 222,721 | $1.66M | 0.00% | +921+0.4% | Added |
| Invesco Ltd. | 202,786 | $1.51M | 0.00% | +6,411+3.3% | Added |
| California State Teachers Retirement System | 198,287 | $1.48M | 0.00% | −11,918−5.7% | Reduced |
| Bank of America Corp | 179,350 | $1.34M | 0.00% | −74,501−29.3% | Reduced |
| Arrowstreet Capital, Limited Partnership | 178,575 | $1.33M | 0.00% | −518,391−74.4% | Reduced |
| Squarepoint Ops LLC | 171,298 | $1.28M | 0.01% | −26,675−13.5% | Reduced |
| Legal & General Group Plc | 168,217 | $1.26M | 0.00% | +20,123+13.6% | Added |
| UBS Asset Management Americas Inc | 147,027 | $1.10M | 0.00% | +16,648+12.8% | Added |
| Credit Suisse AG | 143,727 | $1.07M | 0.00% | −2,900−2.0% | Reduced |
| Susquehanna International Group, LLP | 142,960 | $1.07M | 0.00% | −71,178−33.2% | Reduced |
| UBS Group AG | 134,402 | $1.00M | 0.00% | −2,253−1.6% | Reduced |
| Susquehanna Fundamental Investments, LLC | 126,953 | $948.3K | 0.06% | 00.0% | Unchanged |
| Legato Capital Management LLC | 120,080 | $897.0K | 0.13% | +120,080 | New |
| Boston Partners | 117,676 | $879.0K | 0.00% | −9,401−7.4% | Reduced |
| MetLife Investment Management | 106,362 | $794.5K | 0.01% | 00.0% | Unchanged |
| American International Group, Inc. | 100,047 | $747.4K | 0.00% | +3,558+3.7% | Added |
| Ardsley Advisory Partners LP | 100,000 | $747.0K | 0.20% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 98,196 | $733.5K | 0.00% | +18,353+23.0% | Added |
| Deutsche Bank AG | 94,525 | $706.1K | 0.00% | +12,352+15.0% | Added |
| Mirae Asset Global Investments Co., Ltd. | 90,717 | $677.7K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 80,847 | $603.9K | 0.00% | +565+0.7% | Added |
| Voya Investment Management LLC | 79,962 | $597.3K | 0.00% | +166+0.2% | Added |
| Barclays PLC | 67,156 | $501.7K | 0.00% | −2,309−3.3% | Reduced |
| SG Americas Securities, LLC | 64,317 | $480.0K | 0.01% | +64,317 | New |
| Wells Fargo & Company | 60,771 | $454.0K | 0.00% | −23,731−28.1% | Reduced |
| State Board of Administration of Florida Retirement System | 57,210 | $427.4K | 0.00% | +300+0.5% | Added |
| Arizona State Retirement System | 49,635 | $370.8K | 0.00% | +3,823+8.3% | Added |
| Handelsbanken Fonder AB | 46,831 | $350.0K | 0.00% | +3,331+7.7% | Added |
| Price T Rowe Associates Inc | 44,847 | $336.0K | 0.00% | +4,261+10.5% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 37,605 | $280.9K | 0.00% | +12,163+47.8% | Added |
| Qube Research & Technologies Ltd | 35,171 | $262.7K | 0.00% | −149,672−81.0% | Reduced |
| Royal Bank of Canada | 33,658 | $251.0K | 0.00% | +12,744+60.9% | Added |
| Principal Financial Group Inc | 29,620 | $221.3K | 0.00% | +8,335+39.2% | Added |
| Jane Street Group, LLC | 28,520 | $213.0K | 0.00% | −14,767−34.1% | Reduced |
| LPL Financial LLC | 26,078 | $194.8K | 0.00% | +5,000+23.7% | Added |
| ProShare Advisors LLC | 26,043 | $194.5K | 0.00% | −29−0.1% | Reduced |
| Nordwand Advisors, LLC | 25,000 | $186.8K | 0.04% | −45,600−64.6% | Reduced |
| Versor Investments LP | 24,700 | $184.5K | 0.04% | +24,700 | New |
| Victory Capital Management Inc | 22,754 | $170.0K | 0.00% | +87+0.4% | Added |
| Pictet Asset Management Holding SA | 22,027 | $164.5K | 0.00% | +22,027 | New |
| GWM Advisors LLC | 20,414 | $152.5K | 0.00% | −1,488−6.8% | Reduced |
| Ameritas Investment Partners, Inc. | 19,770 | $147.7K | 0.01% | +3,216+19.4% | Added |
| Jump Financial, LLC | 19,722 | $147.3K | 0.01% | +1,450+7.9% | Added |
| Amalgamated Bank | 19,587 | $146.0K | 0.00% | +2,690+15.9% | Added |
| Kestra Advisory Services, LLC | 19,001 | $141.9K | 0.00% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 18,691 | $139.6K | 0.00% | +5,796+44.9% | Added |
| Walleye Trading LLC | 18,213 | $136.1K | 0.00% | +18,213 | New |
| Campbell & CO Investment Adviser LLC | 16,149 | $120.6K | 0.01% | +16,149 | New |
| Oppenheimer & Co Inc | 13,900 | $103.8K | 0.00% | 00.0% | Unchanged |
| Prudential Financial Inc | 13,840 | $103.4K | 0.00% | +1,650+13.5% | Added |
| Teacher Retirement System of Texas | 13,472 | $101.0K | 0.00% | +1,140+9.2% | Added |