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 2026
Institutional positions in Mirion Technologies, Inc. as of Jun 30, 2026. 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
- 351
- −6 vs. Q1 2026
- Shares held
- 262.0M
- +12.6M (+5.0%) vs. Q1 2026
- Total value
- $4.70B
- +$56.2M (+1.2%) vs. Q1 2026
- New holders
- 59
- 138 more added
- Sold out
- 65
- 117 more reduced
5 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Essex Investment Management Co LLC | 295,060 | $5.29M | 0.69% | −14,050−4.5% | Reduced |
| Axiom Investors LLC | 280,861 | $5.04M | 0.04% | −191,175−40.5% | Reduced |
| Walleye Capital LLC | 271,466 | $4.87M | 0.02% | −1,498−0.5% | Reduced |
| California State Teachers Retirement System | 267,489 | $4.80M | 0.00% | −6,607−2.4% | Reduced |
| Bastion Asset Management Inc. | 272,545 | $4.68M | 1.59% | −116,613−30.0% | Reduced |
| Prudential Financial Inc | 252,050 | $4.52M | 0.00% | +2,535+1.0% | Added |
| Mirova | 246,000 | $4.41M | 0.16% | −122,380−33.2% | Reduced |
| Hollow Brook Wealth Management LLC | 234,242 | $4.20M | 0.84% | +62,238+36.2% | Added |
| Tema ETFs LLC | 226,408 | $4.06M | 0.13% | +70,668+45.4% | Added |
| State of Wisconsin Investment Board | 225,843 | $4.05M | 0.01% | −16,969−7.0% | Reduced |
| AQR Capital Management LLC | 207,596 | $3.72M | 0.00% | −61,476−22.8% | Reduced |
| Rice Hall James & Associates, LLC | 207,439 | $3.72M | 0.18% | +10,540+5.4% | Added |
| Fifth Third Bancorp | 202,965 | $3.64M | 0.01% | −24,153−10.6% | Reduced |
| Summit Creek Advisors LLC | 198,422 | $3.56M | 1.21% | −117,458−37.2% | Reduced |
| Bessemer Group Inc | 197,221 | $3.54M | 0.00% | −359−0.2% | Reduced |
| Madison Asset Management, LLC | 190,001 | $3.41M | 0.04% | +65,678+52.8% | Added |
| Boothbay Fund Management, LLC | 188,515 | $3.38M | 0.06% | +44,857+31.2% | Added |
| Vanguard Asset Management, Ltd | 186,950 | $3.35M | 0.00% | +8,338+4.7% | Added |
| Russell Investments Group, Ltd. | 183,988 | $3.30M | 0.00% | +116,329+171.9% | Added |
| Register Financial Advisors LLC | 178,800 | $3.21M | 0.98% | +75,150+72.5% | Added |
| Kornitzer Capital Management Inc | 170,685 | $3.06M | 0.06% | −3,980−2.3% | Reduced |
| Natixis Advisors, L.P. | 167,405 | $3.00M | 0.00% | +113,733+211.9% | Added |
| Nomura Asset Management International Inc. | 165,408 | $2.97M | 0.00% | −561,870−77.3% | Reduced |
| Jones Financial Companies LLLP | 159,475 | $2.94M | 0.00% | +154,495+3,102.3% | Added |
| Thrivent Financial for Lutherans | 160,657 | $2.88M | 0.00% | −2,647−1.6% | Reduced |
| Covea Finance | 158,400 | $2.84M | 0.09% | +39,200+32.9% | Added |
| Fred Alger Management, LLC | 156,083 | $2.80M | 0.01% | −753,523−82.8% | Reduced |
| KBC Group NV | 153,925 | $2.76M | 0.01% | 00.0% | Unchanged |
| Illinois Municipal Retirement Fund | 149,364 | $2.68M | 0.03% | +23,030+18.2% | Added |
| B. Metzler seel. Sohn & Co. AG | 144,834 | $2.60M | 0.02% | +144,834 | New |
| MetLife Investment Management | 141,335 | $2.53M | 0.01% | +10,336+7.9% | Added |
| Neo Ivy Capital Management | 139,867 | $2.51M | 0.58% | +95,260+213.6% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 138,707 | $2.49M | 0.00% | −127,392−47.9% | Reduced |
| SG Americas Securities, LLC | 134,473 | $2.41M | 0.00% | +108,690+421.6% | Added |
| RMB Capital Management, LLC | 132,529 | $2.38M | 0.04% | +44,085+49.8% | Added |
| Manufacturers Life Insurance Company, The | 124,653 | $2.24M | 0.00% | +12,995+11.6% | Added |
| Pathstone Holdings, LLC | 121,677 | $2.18M | 0.01% | −10,455−7.9% | Reduced |
| Ensign Peak Advisors, Inc | 116,040 | $2.08M | 0.00% | −515,378−81.6% | Reduced |
| Kennedy Capital Management, Inc. | 113,714 | $2.04M | 0.04% | −9,850−8.0% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 111,566 | $2.00M | 0.00% | −845−0.8% | Reduced |
| Creative Planning | 109,597 | $1.97M | 0.00% | −29,662−21.3% | Reduced |
| Stifel Financial Corp | 108,384 | $1.94M | 0.00% | +41,726+62.6% | Added |
| Louisiana State Employees Retirement System | 107,200 | $1.92M | 0.03% | −1,300−1.2% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 100,446 | $1.80M | 0.00% | +100,446 | New |
| Legato Capital Management LLC | 100,357 | $1.80M | 0.15% | +2,991+3.1% | Added |
| FIL Ltd | 100,000 | $1.79M | 0.00% | 00.0% | Unchanged |
| New York State Teachers Retirement System | 98,036 | $1.76M | 0.00% | +8,319+9.3% | Added |
| Scotia Capital Inc. | 94,289 | $1.69M | 0.01% | −448−0.5% | Reduced |
| Vanguard Global Advisers, LLC | 93,855 | $1.68M | 0.00% | −9,276−9.0% | Reduced |
| Pacer Advisors, Inc. | 93,808 | $1.68M | 0.00% | +29,626+46.2% | Added |
| KLP Kapitalforvaltning AS | 93,700 | $1.68M | 0.01% | +41,700+80.2% | Added |
| State of Alaska, Department of Revenue | 91,642 | $1.64M | 0.02% | −40,203−30.5% | Reduced |
| Handelsbanken Fonder AB | 89,031 | $1.60M | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 85,090 | $1.53M | 0.00% | +10,300+13.8% | Added |
| XTX Topco Ltd | 84,878 | $1.52M | 0.02% | +47,700+128.3% | Added |
| State of New Jersey Common Pension Fund D | 84,156 | $1.51M | 0.01% | −20,591−19.7% | Reduced |
| O'Connor Alternative Investments LLC | 82,400 | $1.48M | 0.11% | +82,400 | New |
| Deltec Asset Management LLC | 80,000 | $1.43M | 0.21% | +80,000 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 79,177 | $1.42M | 0.00% | −636−0.8% | Reduced |
| Voya Investment Management LLC | 79,030 | $1.42M | 0.00% | −1,089,198−93.2% | Reduced |
| La Banque Postale Asset Management SA | 78,926 | $1.42M | 0.01% | +680+0.9% | Added |
| Qsemble Capital Management, LP | 77,820 | $1.40M | 0.18% | +66,009+558.9% | Added |
| Diversify Advisory Services, LLC | 78,781 | $1.33M | 0.02% | +78,781 | New |
| Diversify Wealth Management, LLC | 78,781 | $1.33M | 0.02% | +78,781 | New |
| Brevan Howard Capital Management LP | 72,392 | $1.30M | 0.02% | +72,392 | New |
| Police & Firemen's Retirement System of New Jersey | 71,459 | $1.28M | 0.01% | +6,113+9.4% | Added |
| State of Tennessee, Treasury Department | 69,793 | $1.25M | 0.00% | +14,250+25.7% | Added |
| LPL Financial LLC | 66,750 | $1.20M | 0.00% | −47,345−41.5% | Reduced |
| Entropy Technologies, LP | 66,696 | $1.20M | 0.05% | +28,189+73.2% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 65,728 | $1.18M | 0.00% | −42,870−39.5% | Reduced |
| Amalgamated Bank | 65,654 | $1.18M | 0.01% | −4,521−6.4% | Reduced |
| Yousif Capital Management, LLC | 65,261 | $1.17M | 0.01% | −635−1.0% | Reduced |
| Arizona State Retirement System | 64,064 | $1.15M | 0.01% | −574−0.9% | Reduced |
| Sumitomo Life Insurance Co | 63,697 | $1.14M | 0.02% | −12,912−16.9% | Reduced |
| Fox Run Management, L.L.C. | 63,660 | $1.14M | 0.19% | +63,660 | New |
| Victory Capital Management Inc | 62,452 | $1.12M | 0.00% | −89,517−58.9% | Reduced |
| Teachers Retirement System of the State of Kentucky | 60,506 | $1.08M | 0.01% | 00.0% | Unchanged |
| Vanguard Investments Australia, Ltd. | 58,950 | $1.06M | 0.00% | 00.0% | Unchanged |
| Intech Investment Management LLC | 58,839 | $1.05M | 0.01% | −13,593−18.8% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 58,016 | $1.04M | 0.01% | −2,488−4.1% | Reduced |
| State Board of Administration of Florida Retirement System | 57,210 | $1.03M | 0.00% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 55,400 | $993.3K | 0.01% | −500−0.9% | Reduced |
| Portside Wealth Group, LLC | 51,881 | $930.2K | 0.11% | +35,339+213.6% | Added |
| 1832 Asset Management L.P. | 50,000 | $896.5K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 49,036 | $879.2K | 0.01% | +10,800+28.2% | Added |
| Themes Management Co LLC | 45,824 | $821.6K | 0.54% | +6,987+18.0% | Added |
| Barclays PLC | 44,128 | $791.2K | 0.00% | +338+0.8% | Added |
| Cresset Asset Management, LLC | 42,721 | $766.0K | 0.00% | +165+0.4% | Added |
| Oppenheimer & Co Inc | 41,146 | $737.7K | 0.01% | −469−1.1% | Reduced |
| Caption Management, LLC | 40,000 | $717.2K | 0.03% | +40,000 | New |
| Concentric Capital Strategies, LP | 39,156 | $702.1K | 0.04% | +39,156 | New |
| First Trust Advisors LP | 38,165 | $684.3K | 0.00% | −108,828−74.0% | Reduced |
| Parallax Volatility Advisers, L.P. | 38,018 | $681.7K | 0.03% | +38,018 | New |
| Maryland State Retirement & Pension System | 35,626 | $638.8K | 0.01% | 00.0% | Unchanged |
| Pictet Asset Management Holding SA | 35,491 | $636.4K | 0.00% | 00.0% | Unchanged |
| OP Asset Management Ltd | 35,177 | $630.7K | 0.01% | +35,177 | New |
| ProShare Advisors LLC | 34,580 | $620.0K | 0.00% | −2,790−7.5% | Reduced |
| Vontobel Holding Ltd. | 33,391 | $598.7K | 0.00% | +3,500+11.7% | Added |
| Citadel Advisors LLC | 32,796 | $588.0K | 0.00% | −1,790,456−98.2% | Reduced |
| Captrust Financial Advisors | 32,545 | $583.5K | 0.00% | +3,912+13.7% | Added |