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 |
|---|---|---|---|---|---|
| KLP Kapitalforvaltning AS | 93,700 | $1.68M | 0.01% | +41,700+80.2% | Added |
| Pacer Advisors, Inc. | 93,808 | $1.68M | 0.00% | +29,626+46.2% | Added |
| Vanguard Global Advisers, LLC | 93,855 | $1.68M | 0.00% | −9,276−9.0% | Reduced |
| Scotia Capital Inc. | 94,289 | $1.69M | 0.01% | −448−0.5% | Reduced |
| New York State Teachers Retirement System | 98,036 | $1.76M | 0.00% | +8,319+9.3% | Added |
| FIL Ltd | 100,000 | $1.79M | 0.00% | 00.0% | Unchanged |
| Legato Capital Management LLC | 100,357 | $1.80M | 0.15% | +2,991+3.1% | Added |
| Cambridge Investment Research Advisors, Inc. | 100,446 | $1.80M | 0.00% | +100,446 | New |
| Louisiana State Employees Retirement System | 107,200 | $1.92M | 0.03% | −1,300−1.2% | Reduced |
| Stifel Financial Corp | 108,384 | $1.94M | 0.00% | +41,726+62.6% | Added |
| Creative Planning | 109,597 | $1.97M | 0.00% | −29,662−21.3% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 111,566 | $2.00M | 0.00% | −845−0.8% | Reduced |
| Kennedy Capital Management, Inc. | 113,714 | $2.04M | 0.04% | −9,850−8.0% | Reduced |
| Ensign Peak Advisors, Inc | 116,040 | $2.08M | 0.00% | −515,378−81.6% | Reduced |
| Pathstone Holdings, LLC | 121,677 | $2.18M | 0.01% | −10,455−7.9% | Reduced |
| Manufacturers Life Insurance Company, The | 124,653 | $2.24M | 0.00% | +12,995+11.6% | Added |
| RMB Capital Management, LLC | 132,529 | $2.38M | 0.04% | +44,085+49.8% | Added |
| SG Americas Securities, LLC | 134,473 | $2.41M | 0.00% | +108,690+421.6% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 138,707 | $2.49M | 0.00% | −127,392−47.9% | Reduced |
| Neo Ivy Capital Management | 139,867 | $2.51M | 0.58% | +95,260+213.6% | Added |
| MetLife Investment Management | 141,335 | $2.53M | 0.01% | +10,336+7.9% | Added |
| B. Metzler seel. Sohn & Co. AG | 144,834 | $2.60M | 0.02% | +144,834 | New |
| Illinois Municipal Retirement Fund | 149,364 | $2.68M | 0.03% | +23,030+18.2% | Added |
| KBC Group NV | 153,925 | $2.76M | 0.01% | 00.0% | Unchanged |
| Fred Alger Management, LLC | 156,083 | $2.80M | 0.01% | −753,523−82.8% | Reduced |
| Covea Finance | 158,400 | $2.84M | 0.09% | +39,200+32.9% | Added |
| Thrivent Financial for Lutherans | 160,657 | $2.88M | 0.00% | −2,647−1.6% | Reduced |
| Jones Financial Companies LLLP | 159,475 | $2.94M | 0.00% | +154,495+3,102.3% | Added |
| Nomura Asset Management International Inc. | 165,408 | $2.97M | 0.00% | −561,870−77.3% | Reduced |
| Natixis Advisors, L.P. | 167,405 | $3.00M | 0.00% | +113,733+211.9% | Added |
| Kornitzer Capital Management Inc | 170,685 | $3.06M | 0.06% | −3,980−2.3% | Reduced |
| Register Financial Advisors LLC | 178,800 | $3.21M | 0.98% | +75,150+72.5% | Added |
| Russell Investments Group, Ltd. | 183,988 | $3.30M | 0.00% | +116,329+171.9% | Added |
| Vanguard Asset Management, Ltd | 186,950 | $3.35M | 0.00% | +8,338+4.7% | Added |
| Boothbay Fund Management, LLC | 188,515 | $3.38M | 0.06% | +44,857+31.2% | Added |
| Madison Asset Management, LLC | 190,001 | $3.41M | 0.04% | +65,678+52.8% | Added |
| Bessemer Group Inc | 197,221 | $3.54M | 0.00% | −359−0.2% | Reduced |
| Summit Creek Advisors LLC | 198,422 | $3.56M | 1.21% | −117,458−37.2% | Reduced |
| Fifth Third Bancorp | 202,965 | $3.64M | 0.01% | −24,153−10.6% | Reduced |
| Rice Hall James & Associates, LLC | 207,439 | $3.72M | 0.18% | +10,540+5.4% | Added |
| AQR Capital Management LLC | 207,596 | $3.72M | 0.00% | −61,476−22.8% | Reduced |
| State of Wisconsin Investment Board | 225,843 | $4.05M | 0.01% | −16,969−7.0% | Reduced |
| Tema ETFs LLC | 226,408 | $4.06M | 0.13% | +70,668+45.4% | Added |
| Hollow Brook Wealth Management LLC | 234,242 | $4.20M | 0.84% | +62,238+36.2% | Added |
| Mirova | 246,000 | $4.41M | 0.16% | −122,380−33.2% | Reduced |
| Prudential Financial Inc | 252,050 | $4.52M | 0.00% | +2,535+1.0% | Added |
| Bastion Asset Management Inc. | 272,545 | $4.68M | 1.59% | −116,613−30.0% | Reduced |
| California State Teachers Retirement System | 267,489 | $4.80M | 0.00% | −6,607−2.4% | Reduced |
| Walleye Capital LLC | 271,466 | $4.87M | 0.02% | −1,498−0.5% | Reduced |
| Axiom Investors LLC | 280,861 | $5.04M | 0.04% | −191,175−40.5% | Reduced |
| Essex Investment Management Co LLC | 295,060 | $5.29M | 0.69% | −14,050−4.5% | Reduced |
| Frontier Capital Management Co LLC | 298,979 | $5.36M | 0.05% | +298,979 | New |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 322,714 | $5.79M | 0.04% | −40,884−11.2% | Reduced |
| Ardsley Advisory Partners LP | 325,000 | $5.83M | 0.63% | 00.0% | Unchanged |
| Holocene Advisors, LP | 337,724 | $6.06M | 0.01% | +252,658+297.0% | Added |
| HRT Financial LP | 339,916 | $6.09M | 0.01% | +339,916 | New |
| Alliancebernstein L.P. | 332,517 | $6.18M | 0.00% | −1,320,912−79.9% | Reduced |
| Royce & Associates LP | 347,262 | $6.23M | 0.05% | −104,493−23.1% | Reduced |
| Burkehill Global Management, LP | 350,000 | $6.28M | 0.23% | 00.0% | Unchanged |
| Gabelli Funds LLC | 351,160 | $6.30M | 0.04% | −16,820−4.6% | Reduced |
| Bridgewater Associates, LP | 359,138 | $6.44M | 0.03% | +7,353+2.1% | Added |
| Bank of Nova Scotia | 373,629 | $6.70M | 0.01% | −6,557−1.7% | Reduced |
| Envestnet Asset Management Inc | 386,193 | $6.92M | 0.00% | +47,535+14.0% | Added |
| TD Asset Management Inc | 389,798 | $6.99M | 0.01% | +41,702+12.0% | Added |
| Lazard Asset Management LLC | 392,003 | $7.03M | 0.01% | +69,582+21.6% | Added |
| Zevenbergen Capital Investments LLC | 400,300 | $7.18M | 0.16% | +74,000+22.7% | Added |
| D. E. Shaw & Co., Inc. | 400,454 | $7.18M | 0.00% | −67,683−14.5% | Reduced |
| Montanaro Asset Management Ltd | 418,646 | $7.51M | 2.37% | +113,346+37.1% | Added |
| Exchange Traded Concepts, LLC | 420,398 | $7.54M | 0.04% | +13,416+3.3% | Added |
| Price T Rowe Associates Inc | 421,193 | $7.55M | 0.00% | +38,405+10.0% | Added |
| Robeco Schweiz AG | 424,000 | $7.60M | 0.12% | +194,000+84.3% | Added |
| BNP Paribas Arbitrage, SA | 450,934 | $8.09M | 0.00% | −660,463−59.4% | Reduced |
| Swiss National Bank | 465,900 | $8.35M | 0.00% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 480,488 | $8.62M | 0.00% | −26,698−5.3% | Reduced |
| Peregrine Capital Management LLC | 502,843 | $9.02M | 0.29% | +40,460+8.8% | Added |
| Gamco Investors, Inc. Et Al | 535,270 | $9.60M | 0.09% | −9,392−1.7% | Reduced |
| Legal & General Group Plc | 542,835 | $9.73M | 0.00% | −13,075−2.4% | Reduced |
| Rhumbline Advisers | 568,321 | $10.2M | 0.01% | −66,094−10.4% | Reduced |
| Schwartz Investment Counsel Inc | 573,910 | $10.3M | 0.34% | −280,390−32.8% | Reduced |
| WCM Investment Management, LLC | 591,279 | $10.3M | 0.02% | +591,279 | New |
| ArrowMark Colorado Holdings LLC | 588,240 | $10.5M | 0.44% | +13,085+2.3% | Added |
| Citigroup Inc | 598,776 | $10.7M | 0.00% | −449,328−42.9% | Reduced |
| Nissay Asset Management Corp | 599,278 | $10.7M | 0.05% | +599,278 | New |
| ExodusPoint Capital Management, LP | 605,134 | $10.9M | 0.10% | +605,134 | New |
| Standard Life Aberdeen plc | 627,585 | $11.3M | 0.02% | +171,123+37.5% | Added |
| Advisor Group Holdings, Inc. | 670,489 | $12.0M | 0.01% | +485,442+262.3% | Added |
| Point72 Asset Management, L.P. | 677,509 | $12.1M | 0.02% | +503,238+288.8% | Added |
| Deutsche Bank AG | 684,849 | $12.3M | 0.00% | +71,801+11.7% | Added |
| Pier Capital, LLC | 696,047 | $12.5M | 1.65% | −7,764−1.1% | Reduced |
| Nomura Holdings Inc | 709,604 | $12.7M | 0.05% | −54,956−7.2% | Reduced |
| Wells Fargo & Company | 713,358 | $12.8M | 0.00% | +34,921+5.1% | Added |
| Massachusetts Financial Services Co | 760,985 | $13.6M | 0.00% | −828,274−52.1% | Reduced |
| Federated Hermes, Inc. | 797,538 | $14.3M | 0.02% | −18,909−2.3% | Reduced |
| Silvercrest Asset Management Group LLC | 813,203 | $14.6M | 0.10% | +132,848+19.5% | Added |
| Public Sector Pension Investment Board | 840,519 | $15.1M | 0.04% | −34,771−4.0% | Reduced |
| Toroso Investments, LLC | 840,683 | $15.1M | 0.04% | +65,670+8.5% | Added |
| Allspring Global Investments Holdings, LLC | 846,790 | $15.2M | 0.02% | −212,240−20.0% | Reduced |
| SEI Investments Co | 849,475 | $15.2M | 0.01% | +391,116+85.3% | Added |
| Corsair Capital Management, L.P. | 867,670 | $15.6M | 1.96% | −114,749−11.7% | Reduced |
| Emerald Mutual Fund Advisers Trust | 873,466 | $15.7M | 0.55% | 00.0% | Unchanged |