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
- 262.1M
- +12.7M (+5.1%) vs. Q1 2026
- Total value
- $4.70B
- +$58.0M (+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 | 366 | $5.96B |
| Q3 2025 | 343 | $5.94B |
| Q2 2025 | 302 | $4.50B |
| Q1 2025 | 230 | $2.69B |
| Q4 2024 | 224 | $3.38B |
| Q3 2024 | 176 | $2.28B |
| Q2 2024 | 155 | $2.14B |
| Q1 2024 | 143 | $2.19B |
| Q4 2023 | 125 | $1.96B |
| Q3 2023 | 127 | $1.42B |
| Q2 2023 | 124 | $1.55B |
| Q1 2023 | 117 | $1.54B |
| Q4 2022 | 119 | $1.02B |
| Q3 2022 | 121 | $1.29B |
| 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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 38,262,307 | $686.0M | 0.01% | +404,610+1.1% | Added |
| Vanguard Portfolio Management LLC | 18,179,850 | $326.0M | 0.01% | +274,128+1.5% | Added |
| T. Rowe Price Investment Management, Inc. | 14,288,075 | $256.2M | 0.17% | −339,720−2.3% | Reduced |
| Vanguard Capital Management LLC | 10,613,869 | $190.3M | 0.00% | +108,674+1.0% | Added |
| Goldman Sachs Group Inc | 10,406,605 | $186.6M | 0.02% | +3,056,937+41.6% | Added |
| State Street Corp | 9,923,609 | $177.9M | 0.01% | +493,592+5.2% | Added |
| Alyeska Investment Group, L.P. | 9,534,955 | $171.0M | 0.44% | +6,833,375+252.9% | Added |
| Cooperman Leon G | 8,383,441 | $150.3M | 4.24% | 00.0% | Unchanged |
| FMR LLC | 7,329,386 | $131.4M | 0.01% | +777,694+11.9% | Added |
| Congress Asset Management Co | 6,685,434 | $119.9M | 0.74% | +5,571,373+500.1% | Added |
| Geode Capital Management, LLC | 6,280,048 | $112.6M | 0.01% | +339,873+5.7% | Added |
| Maverick Capital LtdSuperinvestorMaverick Capital | 5,245,039 | $94.0M | 0.85% | +2,595,160+97.9% | Added |
| Dimensional Fund Advisors LP | 4,859,755 | $87.1M | 0.02% | +165,467+3.5% | Added |
| Jupiter Topco LLC | 4,114,766 | $73.8M | 0.03% | +4,114,766 | New |
| Bamco Inc | 3,906,083 | $70.0M | 0.11% | +2,692,335+221.8% | Added |
| Morgan Stanley | 3,896,754 | $69.9M | 0.00% | +1,611,686+70.5% | Added |
| Neuberger Berman Group LLC | 3,199,539 | $57.4M | 0.04% | +2,343,150+273.6% | Added |
| American Century Companies Inc | 3,176,241 | $57.0M | 0.03% | +443,479+16.2% | Added |
| Invesco Ltd. | 2,769,589 | $49.7M | 0.00% | +475,339+20.7% | Added |
| UBS Group AG | 2,686,713 | $48.2M | 0.01% | −1,080,129−28.7% | Reduced |
| Northern Trust Corp | 2,586,059 | $46.4M | 0.01% | +219,822+9.3% | Added |
| JPMorgan Chase & Co | 2,606,507 | $45.7M | 0.00% | −12,613−0.5% | Reduced |
| Swedbank AB | 2,531,200 | $45.4M | 0.04% | −628,750−19.9% | Reduced |
| Loomis Sayles & Co L P | 2,525,188 | $45.3M | 0.06% | −145,040−5.4% | Reduced |
| Charles Schwab Investment Management Inc | 2,447,222 | $43.9M | 0.01% | +169,977+7.5% | Added |
| TCW Group Inc | 2,255,645 | $40.4M | 0.27% | +17,219+0.8% | Added |
| Nuveen, LLC | 2,109,181 | $37.8M | 0.01% | +159,189+8.2% | Added |
| Royal Bank of Canada | 1,782,618 | $32.0M | 0.01% | −178,786−9.1% | Reduced |
| Vanguard Fiduciary Trust Co | 1,723,956 | $30.9M | 0.01% | +29,418+1.7% | Added |
| Stephens Investment Management Group LLC | 1,678,373 | $30.1M | 0.32% | +303,497+22.1% | Added |
| Chescapmanager LLC | 1,659,137 | $29.7M | 3.86% | 00.0% | Unchanged |
| Davidson Kempner Capital Management LP | 1,619,998 | $29.0M | 0.47% | +305,179+23.2% | Added |
| Select Equity Group, L.P. | 1,576,023 | $28.3M | 0.15% | +520,555+49.3% | Added |
| Schroder Investment Management Group | 1,594,840 | $27.8M | 0.02% | +458,840+40.4% | Added |
| Troluce Capital Advisors LLC | 1,539,212 | $27.6M | 10.34% | +39,212+2.6% | Added |
| Rockefeller Capital Management L.P. | 1,466,144 | $26.3M | 0.04% | +73,420+5.3% | Added |
| TimesSquare Capital Management, LLC | 1,400,642 | $25.1M | 0.37% | +106,477+8.2% | Added |
| Bank of New York Mellon Corp | 1,381,674 | $24.8M | 0.00% | −3,155,058−69.5% | Reduced |
| Emerald Advisers, LLC | 1,364,780 | $24.5M | 0.58% | −16,794−1.2% | Reduced |
| Conestoga Capital Advisors, LLC | 1,248,061 | $22.4M | 0.49% | −582,958−31.8% | Reduced |
| Raymond James Financial Inc | 1,196,716 | $21.5M | 0.01% | +121,064+11.3% | Added |
| Principal Financial Group Inc | 1,194,106 | $21.4M | 0.01% | −1,943−0.2% | Reduced |
| Royal London Asset Management Ltd | 1,176,241 | $21.1M | 0.04% | +1,176,241 | New |
| Bank of America Corp | 1,158,094 | $20.8M | 0.00% | −197,204−14.6% | Reduced |
| Segall Bryant & Hamill, LLC | 1,131,124 | $20.3M | 0.24% | +19,250+1.7% | Added |
| Wellington Management Group LLP | 1,098,987 | $19.7M | 0.00% | +261,175+31.2% | Added |
| Clearbridge Investments, LLC | 1,096,729 | $19.7M | 0.02% | +1,096,729 | New |
| Ameriprise Financial Inc | 1,002,284 | $18.0M | 0.00% | −287,406−22.3% | Reduced |
| Millennium Management LLC | 991,741 | $17.8M | 0.01% | −4,115,060−80.6% | Reduced |
| Jennison Associates LLC | 887,170 | $15.9M | 0.01% | −55,526−5.9% | Reduced |
| Franklin Resources Inc | 884,482 | $15.9M | 0.00% | −1,111,662−55.7% | Reduced |
| Emerald Mutual Fund Advisers Trust | 873,466 | $15.7M | 0.55% | 00.0% | Unchanged |
| Corsair Capital Management, L.P. | 867,670 | $15.6M | 1.96% | −114,749−11.7% | Reduced |
| SEI Investments Co | 849,475 | $15.2M | 0.01% | +391,116+85.3% | Added |
| Allspring Global Investments Holdings, LLC | 846,790 | $15.2M | 0.02% | −212,240−20.0% | Reduced |
| Toroso Investments, LLC | 840,683 | $15.1M | 0.04% | +65,670+8.5% | Added |
| Public Sector Pension Investment Board | 840,519 | $15.1M | 0.04% | −34,771−4.0% | Reduced |
| Silvercrest Asset Management Group LLC | 813,203 | $14.6M | 0.10% | +132,848+19.5% | Added |
| Federated Hermes, Inc. | 797,538 | $14.3M | 0.02% | −18,909−2.3% | Reduced |
| Massachusetts Financial Services Co | 760,985 | $13.6M | 0.00% | −828,274−52.1% | Reduced |
| Wells Fargo & Company | 713,358 | $12.8M | 0.00% | +34,921+5.1% | Added |
| Nomura Holdings Inc | 709,604 | $12.7M | 0.05% | −54,956−7.2% | Reduced |
| Pier Capital, LLC | 696,047 | $12.5M | 1.65% | −7,764−1.1% | Reduced |
| Deutsche Bank AG | 684,849 | $12.3M | 0.00% | +71,801+11.7% | Added |
| Point72 Asset Management, L.P. | 677,509 | $12.1M | 0.02% | +503,238+288.8% | Added |
| Advisor Group Holdings, Inc. | 670,489 | $12.0M | 0.01% | +485,442+262.3% | Added |
| Standard Life Aberdeen plc | 627,585 | $11.3M | 0.02% | +171,123+37.5% | Added |
| ExodusPoint Capital Management, LP | 605,134 | $10.9M | 0.10% | +605,134 | New |
| Nissay Asset Management Corp | 599,278 | $10.7M | 0.05% | +599,278 | New |
| Citigroup Inc | 598,776 | $10.7M | 0.00% | −449,328−42.9% | Reduced |
| ArrowMark Colorado Holdings LLC | 588,240 | $10.5M | 0.44% | +13,085+2.3% | Added |
| WCM Investment Management, LLC | 591,279 | $10.3M | 0.02% | +591,279 | New |
| Schwartz Investment Counsel Inc | 573,910 | $10.3M | 0.34% | −280,390−32.8% | Reduced |
| Rhumbline Advisers | 568,321 | $10.2M | 0.01% | −66,094−10.4% | Reduced |
| Legal & General Group Plc | 542,835 | $9.73M | 0.00% | −13,075−2.4% | Reduced |
| Gamco Investors, Inc. Et Al | 535,270 | $9.60M | 0.09% | −9,392−1.7% | Reduced |
| Peregrine Capital Management LLC | 502,843 | $9.02M | 0.29% | +40,460+8.8% | Added |
| UBS Asset Management Americas Inc | 480,488 | $8.62M | 0.00% | −26,698−5.3% | Reduced |
| Swiss National Bank | 465,900 | $8.35M | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 450,934 | $8.09M | 0.00% | −660,463−59.4% | Reduced |
| Robeco Schweiz AG | 424,000 | $7.60M | 0.12% | +194,000+84.3% | Added |
| Price T Rowe Associates Inc | 421,193 | $7.55M | 0.00% | +38,405+10.0% | Added |
| Exchange Traded Concepts, LLC | 420,398 | $7.54M | 0.04% | +13,416+3.3% | Added |
| Montanaro Asset Management Ltd | 418,646 | $7.51M | 2.37% | +113,346+37.1% | Added |
| D. E. Shaw & Co., Inc. | 400,454 | $7.18M | 0.00% | −67,683−14.5% | Reduced |
| Zevenbergen Capital Investments LLC | 400,300 | $7.18M | 0.16% | +74,000+22.7% | Added |
| Lazard Asset Management LLC | 392,003 | $7.03M | 0.01% | +69,582+21.6% | Added |
| TD Asset Management Inc | 389,798 | $6.99M | 0.01% | +41,702+12.0% | Added |
| Envestnet Asset Management Inc | 386,193 | $6.92M | 0.00% | +47,535+14.0% | Added |
| Bank of Nova Scotia | 373,629 | $6.70M | 0.01% | −6,557−1.7% | Reduced |
| Bridgewater Associates, LP | 359,138 | $6.44M | 0.03% | +7,353+2.1% | Added |
| Gabelli Funds LLC | 351,160 | $6.30M | 0.04% | −16,820−4.6% | Reduced |
| Burkehill Global Management, LP | 350,000 | $6.28M | 0.23% | 00.0% | Unchanged |
| Royce & Associates LP | 347,262 | $6.23M | 0.05% | −104,493−23.1% | Reduced |
| Alliancebernstein L.P. | 332,517 | $6.18M | 0.00% | −1,320,912−79.9% | Reduced |
| HRT Financial LP | 339,916 | $6.09M | 0.01% | +339,916 | New |
| Holocene Advisors, LP | 337,724 | $6.06M | 0.01% | +252,658+297.0% | Added |
| Ardsley Advisory Partners LP | 325,000 | $5.83M | 0.63% | 00.0% | Unchanged |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 322,714 | $5.79M | 0.04% | −40,884−11.2% | Reduced |
| Frontier Capital Management Co LLC | 298,979 | $5.36M | 0.05% | +298,979 | New |