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 2023
Institutional positions in Mirion Technologies, Inc. as of Dec 31, 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
- 125
- −1 vs. Q3 2023
- Shares held
- 187.9M
- −41.8K (0.0%) vs. Q3 2023
- Total value
- $1.93B
- +$522.0M (+37.2%) vs. Q3 2023
- New holders
- 14
- 48 more added
- Sold out
- 15
- 44 more reduced
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Goldman Sachs Group Inc | 34,806,880 | $356.8M | 0.08% | +6,2950.0% | Added |
| Vanguard Group Inc | 21,148,627 | $216.8M | 0.00% | −179,347−0.8% | Reduced |
| T. Rowe Price Investment Management, Inc. | 19,866,226 | $203.6M | 0.13% | +274,454+1.4% | Added |
| BlackRock Inc. | 15,946,984 | $163.5M | 0.00% | +1,092,376+7.4% | Added |
| Swedbank AB | 10,373,944 | $106.3M | 0.17% | −863,225−7.7% | Reduced |
| Janus Henderson Group PLC | 9,399,185 | $96.3M | 0.06% | +671,309+7.7% | Added |
| Cooperman Leon G | 7,513,400 | $77.0M | 3.67% | +113,400+1.5% | Added |
| P2 Capital Partners, LLC | 5,847,122 | $59.9M | 6.60% | +474,414+8.8% | Added |
| Alyeska Investment Group, L.P. | 5,157,876 | $52.9M | 0.36% | −1,115,212−17.8% | Reduced |
| State Street Corp | 5,013,566 | $51.4M | 0.00% | −106,355−2.1% | Reduced |
| Nomura Holdings Inc | 4,916,574 | $50.4M | 0.45% | +493,939+11.2% | Added |
| Geode Capital Management, LLC | 4,087,526 | $41.9M | 0.00% | +211,695+5.5% | Added |
| Dimensional Fund Advisors LP | 3,738,900 | $38.3M | 0.01% | +1,071,810+40.2% | Added |
| ArrowMark Colorado Holdings LLC | 3,626,338 | $37.2M | 0.41% | +327,485+9.9% | Added |
| Kohlberg Kravis Roberts & Co. L.P. | 3,445,894 | $35.3M | 1.04% | 00.0% | Unchanged |
| Corsair Capital Management, L.P. | 2,334,791 | $23.9M | 7.69% | −364,320−13.5% | Reduced |
| Select Equity Group, L.P. | 2,220,268 | $22.8M | 0.08% | +1,890,107+572.5% | Added |
| American Century Companies Inc | 1,994,134 | $20.4M | 0.01% | +136,230+7.3% | Added |
| First Manhattan Co | 1,788,059 | $18.3M | 0.06% | −291,340−14.0% | Reduced |
| Northern Trust Corp | 1,748,850 | $17.9M | 0.00% | −7750.0% | Reduced |
| Lord, Abbett & Co. LLC | 1,656,780 | $17.0M | 0.06% | +1940.0% | Added |
| Morgan Stanley | 1,594,869 | $16.3M | 0.00% | −50,141−3.0% | Reduced |
| Schwartz Investment Counsel Inc | 1,490,000 | $15.3M | 0.60% | −75,000−4.8% | Reduced |
| Nuveen Asset Management, LLC | 1,484,960 | $15.2M | 0.00% | +106,734+7.7% | Added |
| Charles Schwab Investment Management Inc | 1,462,961 | $15.0M | 0.00% | +18,164+1.3% | Added |
| Pantechnicon Advisors LLP | 1,200,000 | $12.3M | 8.91% | −660,000−35.5% | Reduced |
| CIBC World Markets Corp | 1,075,000 | $11.0M | 0.06% | +300,000+38.7% | Added |
| Adage Capital Partners GP, L.L.C. | 940,799 | $9.64M | 0.02% | +173,027+22.5% | Added |
| Crestline Management, LP | 900,000 | $9.22M | 0.85% | −500,000−35.7% | Reduced |
| Gamco Investors, Inc. Et Al | 779,845 | $7.99M | 0.09% | −16,450−2.1% | Reduced |
| Bank of New York Mellon Corp | 772,741 | $7.92M | 0.00% | +55,077+7.7% | Added |
| Gabelli Funds LLC | 716,040 | $7.34M | 0.06% | −11,960−1.6% | Reduced |
| Carlson Capital L P | 539,064 | $5.53M | 0.44% | −24,875−4.4% | Reduced |
| Citigroup Inc | 443,380 | $4.54M | 0.01% | −61,166−12.1% | Reduced |
| UBS Group AG | 369,372 | $3.79M | 0.00% | +234,970+174.8% | Added |
| Swiss National Bank | 343,600 | $3.52M | 0.00% | −39,600−10.3% | Reduced |
| JPMorgan Chase & Co | 338,203 | $3.47M | 0.00% | +100,437+42.2% | Added |
| TD Asset Management Inc | 336,054 | $3.44M | 0.00% | 00.0% | Unchanged |
| Roubaix Capital, LLC | 336,031 | $3.44M | 2.41% | −165,957−33.1% | Reduced |
| Pentwater Capital Management LP | 335,000 | $3.43M | 0.06% | −243,186−42.1% | Reduced |
| Rhumbline Advisers | 323,818 | $3.32M | 0.00% | +5,144+1.6% | Added |
| Barclays PLC | 309,838 | $3.18M | 0.00% | +242,682+361.4% | Added |
| Invesco Ltd. | 281,680 | $2.89M | 0.00% | +78,894+38.9% | Added |
| First Trust Advisors LP | 258,781 | $2.65M | 0.00% | +258,781 | New |
| Essex Investment Management Co LLC | 258,073 | $2.65M | 0.52% | −1,139−0.4% | Reduced |
| M&T Bank Corp | 246,308 | $2.53M | 0.01% | +5,602+2.3% | Added |
| Royce & Associates LP | 225,000 | $2.31M | 0.02% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 219,684 | $2.25M | 0.00% | −3,037−1.4% | Reduced |
| UBS Asset Management Americas Inc | 199,828 | $2.05M | 0.00% | +52,801+35.9% | Added |
| Jane Street Group, LLC | 193,313 | $1.98M | 0.00% | +164,793+577.8% | Added |
| Russell Investments Group, Ltd. | 189,955 | $1.95M | 0.00% | −134,258−41.4% | Reduced |
| California State Teachers Retirement System | 188,214 | $1.93M | 0.00% | −10,073−5.1% | Reduced |
| Hollow Brook Wealth Management LLC | 186,003 | $1.91M | 0.76% | +186,003 | New |
| Legal & General Group Plc | 166,131 | $1.70M | 0.00% | −2,086−1.2% | Reduced |
| Ardsley Advisory Partners LP | 150,000 | $1.54M | 0.33% | +50,000+50.0% | Added |
| Credit Suisse AG | 148,701 | $1.52M | 0.00% | +4,974+3.5% | Added |
| Bank of America Corp | 123,518 | $1.27M | 0.00% | −55,832−31.1% | Reduced |
| Legato Capital Management LLC | 120,080 | $1.23M | 0.16% | 00.0% | Unchanged |
| MetLife Investment Management | 106,362 | $1.09M | 0.01% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 104,255 | $1.07M | 0.00% | +59,408+132.5% | Added |
| American International Group, Inc. | 99,644 | $1.02M | 0.00% | −403−0.4% | Reduced |
| Manufacturers Life Insurance Company, The | 95,606 | $980.0K | 0.00% | −2,590−2.6% | Reduced |
| Deutsche Bank AG | 92,333 | $946.4K | 0.00% | −2,192−2.3% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 90,717 | $929.8K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 84,315 | $864.2K | 0.00% | +3,468+4.3% | Added |
| Susquehanna International Group, LLP | 82,519 | $845.8K | 0.00% | −60,441−42.3% | Reduced |
| Voya Investment Management LLC | 81,312 | $833.4K | 0.00% | +1,350+1.7% | Added |
| Wells Fargo & Company | 71,974 | $737.7K | 0.00% | +11,203+18.4% | Added |
| SG Americas Securities, LLC | 69,590 | $713.0K | 0.01% | +5,273+8.2% | Added |
| Royal Bank of Canada | 63,831 | $654.0K | 0.00% | +30,173+89.6% | Added |
| State Board of Administration of Florida Retirement System | 57,210 | $586.4K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 52,793 | $541.1K | 0.01% | +43,369+460.2% | Added |
| Susquehanna Fundamental Investments, LLC | 51,387 | $526.7K | 0.53% | −75,566−59.5% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 50,856 | $521.3K | 0.01% | +50,856 | New |
| Citadel Advisors LLC | 50,336 | $515.9K | 0.00% | −387,567−88.5% | Reduced |
| Arizona State Retirement System | 48,740 | $499.6K | 0.00% | −895−1.8% | Reduced |
| Handelsbanken Fonder AB | 46,831 | $480.0K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 40,540 | $415.0K | 0.00% | +40,540 | New |
| Trexquant Investment LP | 35,214 | $360.9K | 0.01% | +35,214 | New |
| ProShare Advisors LLC | 33,184 | $340.1K | 0.00% | +7,141+27.4% | Added |
| Boston Partners | 32,553 | $333.7K | 0.00% | −85,123−72.3% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 32,030 | $328.3K | 0.00% | −5,575−14.8% | Reduced |
| Marshall Wace, LLP | 29,661 | $304.0K | 0.00% | +29,661 | New |
| Victory Capital Management Inc | 27,873 | $285.7K | 0.00% | +5,119+22.5% | Added |
| Principal Financial Group Inc | 25,257 | $258.9K | 0.00% | −4,363−14.7% | Reduced |
| Nordwand Advisors, LLC | 25,000 | $256.3K | 0.07% | 00.0% | Unchanged |
| Pictet Asset Management Holding SA | 24,618 | $252.3K | 0.00% | +2,591+11.8% | Added |
| Ameritas Investment Partners, Inc. | 20,751 | $212.7K | 0.01% | +981+5.0% | Added |
| Lazard Asset Management LLC | 18,998 | $194.0K | 0.00% | +18,998 | New |
| Kestra Advisory Services, LLC | 18,451 | $189.1K | 0.00% | −550−2.9% | Reduced |
| Amalgamated Bank | 17,555 | $180.0K | 0.00% | −2,032−10.4% | Reduced |
| State of Wisconsin Investment Board | 16,537 | $169.5K | 0.00% | −2,154−11.5% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 16,404 | $168.1K | 0.00% | +16,404 | New |
| GWM Advisors LLC | 16,346 | $167.5K | 0.00% | −4,068−19.9% | Reduced |
| Mariner, LLC | 16,255 | $166.6K | 0.00% | +4,195+34.8% | Added |
| LPL Financial LLC | 14,478 | $148.4K | 0.00% | −11,600−44.5% | Reduced |
| Prudential Financial Inc | 14,210 | $145.7K | 0.00% | +370+2.7% | Added |
| FMR LLC | 14,182 | $145.4K | 0.00% | −479,068−97.1% | Reduced |
| Phoenix Holdings Ltd. | 11,793 | $136.2K | 0.00% | 00.0% | Unchanged |
| Mackenzie Financial Corp | 12,617 | $129.3K | 0.00% | 00.0% | Unchanged |