MIRION TECHNOLOGIES INC (MIR)
Institutional ownership reported to the SEC as of Q2 2026, across 21 quarters.
342
Reporting holders
$4.6B
Reported value
1,329.3%
Of shares outstanding
3.0%
Held as options
-5
Holder change
Institutions report 249,236,477 shares against 18,750,000 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Share count carried from an earlier filing (concept 2025-09-30); over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $686.0M | 38,262,307 | 0.01% | 8q | +1.1%+$7.3M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $326.0M | 18,179,850 | 0.01% | 2q | +1.5%+$4.9M |
| VANGUARD CAPITAL MANAGEMENT LLC | $190.3M | 10,613,869 | 0.00% | 2q | +1.0%+$1.9M |
| GOLDMAN SACHS GROUP INC | $186.6M | 10,406,605 | 0.02% | 19q | +41.6%+$54.8M |
| STATE STREET CORP | $177.9M | 9,923,609 | 0.01% | 19q | +5.2%+$8.9M |
| Alyeska Investment Group, L.P. | $171.0M | 9,534,955 | 0.44% | 19q | +252.9%+$122.5M |
| COOPERMAN LEON G | $150.3M | 8,383,441 | 4.24% | 19q | HELD |
| FMR LLC | $131.4M | 7,329,386 | 0.01% | 19q | +11.9%+$13.9M |
| CONGRESS ASSET MANAGEMENT CO | $119.9M | 6,685,434 | 0.74% | 2q | +500.1%+$99.9M |
| GEODE CAPITAL MANAGEMENT, LLC | $112.6M | 6,280,048 | 0.01% | 19q | +5.7%+$6.1M |
| MAVERICK CAPITAL LTD | $94.0M | 5,245,039 | 0.83% | 2q | +97.9%+$46.5M |
| DIMENSIONAL FUND ADVISORS LP | $87.1M | 4,859,755 | 0.02% | 13q | +3.5%+$3.0M |
| Jupiter Topco LLC | $73.8M | 4,114,766 | 0.03% | new | FIRST |
| BAMCO INC /NY/ | $70.0M | 3,906,083 | 0.11% | 4q | +221.8%+$48.3M |
| MORGAN STANLEY | $69.9M | 3,896,754 | 0.00% | 19q | +70.5%+$28.9M |
| NEUBERGER BERMAN GROUP LLC | $57.4M | 3,199,539 | 0.04% | 3q | +273.6%+$42.0M |
| AMERICAN CENTURY COMPANIES INC | $57.0M | 3,176,241 | 0.03% | 13q | +16.2%+$8.0M |
| Invesco Ltd. | $49.7M | 2,769,589 | 0.00% | 18q | +20.7%+$8.5M |
| UBS Group AG | $48.2M | 2,686,713 | 0.01% | 19q | -28.7%-$19.4M |
| NORTHERN TRUST CORP | $46.4M | 2,586,059 | 0.01% | 19q | +9.3%+$3.9M |
| JPMORGAN CHASE & CO | $45.7M | 2,606,507 | 0.00% | 17q | HELD |
| Swedbank AB | $45.4M | 2,531,200 | 0.04% | 18q | -19.9%-$11.3M |
| LOOMIS SAYLES & CO L P | $45.3M | 2,525,188 | 0.06% | 5q | -5.4%-$2.6M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $43.9M | 2,447,222 | 0.01% | 19q | +7.5%+$3.0M |
| Sixth Street Partners Management Company, L.P. | $43.9M | 2,447,222 | 0.01% | new | NEW |
| TCW GROUP INC | $40.4M | 2,255,645 | 0.27% | 3q | +0.8%+$308.7K |
| Nuveen, LLC | $37.8M | 2,109,181 | 0.01% | 6q | +8.2%+$2.9M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $32.3M | 26,559 | 0.00% | 19q | -83.5%-$163.7M |
| ROYAL BANK OF CANADA | $32.0M | 1,782,618 | 0.00% | 18q | -9.1%-$3.2M |
| VANGUARD FIDUCIARY TRUST CO | $30.9M | 1,723,956 | 0.01% | 2q | +1.7%+$527.5K |
| Public Sector Pension Investment Board | $30.1M | 1,681,038 | 0.04% | 4q | +92.1%+$14.4M |
| Stephens Investment Management Group LLC | $30.1M | 1,678,373 | 0.32% | 3q | +22.1%+$5.4M |
| Chescapmanager LLC | $29.7M | 1,659,137 | 2.53% | 10q | HELD |
| Davidson Kempner Capital Management LP | $29.0M | 1,619,998 | 0.35% | 4q | +23.2%+$5.5M |
| Select Equity Group, L.P. | $28.3M | 1,576,023 | 0.14% | 14q | +49.3%+$9.3M |
| SCHRODER INVESTMENT MANAGEMENT GROUP | $27.8M | 1,594,840 | 0.02% | 7q | +40.4%+$8.0M |
| Troluce Capital Advisors LLC | $27.6M | 1,539,212 | 2.84% | 3q | +2.6%+$703.1K |
| Rockefeller Capital Management L.P. | $26.3M | 1,466,144 | 0.04% | 6q | +5.3%+$1.3M |
| TimesSquare Capital Management, LLC | $25.1M | 1,400,642 | 0.37% | 4q | +8.2%+$1.9M |
| Caption Management, LLC | $25.1M | 40,000 | 0.12% | 2q | HELD |
| Bank of New York Mellon Corp | $24.8M | 1,381,674 | 0.00% | 19q | -69.5%-$56.6M |
| EMERALD ADVISERS, LLC | $24.5M | 1,364,780 | 0.58% | 7q | -1.2%-$301.1K |
| CITIGROUP INC | $22.4M | 598,776 | 0.01% | 17q | -42.9%-$16.8M |
| Conestoga Capital Advisors, LLC | $22.4M | 1,248,061 | 0.49% | 4q | -31.8%-$10.5M |
| RAYMOND JAMES FINANCIAL INC | $21.5M | 1,196,716 | 0.01% | 7q | +11.3%+$2.2M |
| PRINCIPAL FINANCIAL GROUP INC | $21.4M | 1,194,106 | 0.01% | 19q | HELD |
| ROYAL LONDON ASSET MANAGEMENT LTD | $21.1M | 1,176,241 | 0.04% | new | NEW |
| BANK OF AMERICA CORP /DE/ | $20.8M | 1,158,094 | 0.00% | 19q | -14.6%-$3.5M |
| SEGALL BRYANT & HAMILL, LLC | $20.3M | 1,131,124 | 0.24% | 9q | +1.7%+$345.2K |
| WELLINGTON MANAGEMENT GROUP LLP | $19.7M | 1,098,987 | 0.00% | 3q | +31.2%+$4.7M |
| Clearbridge Investments, LLC | $19.7M | 1,096,729 | 0.02% | new | NEW |
| AMERIPRISE FINANCIAL INC | $18.0M | 1,002,284 | 0.00% | 7q | -61.1%-$28.3M |
| MILLENNIUM MANAGEMENT LLC | $17.8M | 991,741 | 0.01% | 2q | -80.6%-$73.8M |
| JENNISON ASSOCIATES LLC | $15.9M | 887,170 | 0.01% | 9q | -5.9%-$995.6K |
| FRANKLIN RESOURCES INC | $15.9M | 884,482 | 0.00% | 5q | -55.7%-$19.9M |
| EMERALD MUTUAL FUND ADVISERS TRUST | $15.7M | 873,466 | 0.55% | 7q | HELD |
| CORSAIR CAPITAL MANAGEMENT, L.P. | $15.6M | 867,670 | 1.94% | 19q | -11.7%-$2.1M |
| SEI INVESTMENTS CO | $15.2M | 849,475 | 0.01% | 7q | +85.3%+$7.0M |
| Allspring Global Investments Holdings, LLC | $15.2M | 846,790 | 0.02% | 10q | -20.0%-$3.8M |
| EXCHANGE TRADED CONCEPTS, LLC | $15.1M | 840,796 | 0.03% | 10q | +106.6%+$7.8M |
| Tidal Investments LLC | $15.1M | 840,683 | 0.03% | 6q | +8.5%+$1.2M |
| Parallax Volatility Advisers, L.P. | $15.0M | 38,018 | 0.03% | new | NEW |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $14.6M | 813,203 | 0.10% | 7q | +19.5%+$2.4M |
| FEDERATED HERMES, INC. | $14.3M | 797,538 | 0.02% | 4q | -2.3%-$339.0K |
| D. E. Shaw & Co., Inc. | $14.1M | 400,454 | 0.01% | 7q | -14.5%-$2.4M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $13.6M | 760,985 | 0.00% | 5q | -52.1%-$14.9M |
| WELLS FARGO & COMPANY/MN | $12.8M | 713,358 | 0.00% | 19q | -47.4%-$11.5M |
| NOMURA HOLDINGS INC | $12.7M | 709,604 | 0.01% | 5q | -7.2%-$985.4K |
| Pier Capital, LLC | $12.5M | 696,047 | 1.65% | 7q | -1.1%-$139.2K |
| DEUTSCHE BANK AG\ | $12.3M | 684,849 | 0.00% | 17q | +11.7%+$1.3M |
| Point72 Asset Management, L.P. | $12.2M | 677,509 | 0.01% | 3q | +288.8%+$9.0M |
| OSAIC HOLDINGS, INC. | $12.0M | 670,489 | 0.01% | 19q | +262.3%+$8.7M |
| Aberdeen Group plc | $11.3M | 627,585 | 0.02% | 2q | +37.5%+$3.1M |
| ExodusPoint Capital Management, LP | $10.9M | 605,134 | 0.07% | new | NEW |
| JANE STREET GROUP, LLC | $10.8M | options only | 0.00% | 19q | OPTIONS |
| NISSAY ASSET MANAGEMENT CORP /JAPAN | $10.7M | 599,278 | 0.05% | new | NEW |
| ArrowMark Colorado Holdings LLC | $10.5M | 588,240 | 0.44% | 17q | +2.3%+$234.6K |
| WCM INVESTMENT MANAGEMENT, LLC | $10.3M | 591,279 | 0.02% | new | NEW |
| SCHWARTZ INVESTMENT COUNSEL INC | $10.3M | 573,910 | 0.34% | 18q | -32.8%-$5.0M |
| RHUMBLINE ADVISERS | $10.2M | 568,321 | 0.01% | 17q | -10.4%-$1.2M |
| IMC-Chicago, LLC | $9.8M | options only | 0.00% | 5q | OPTIONS |
| Legal & General Group Plc | $9.7M | 542,835 | 0.00% | 17q | -2.4%-$234.4K |
| GAMCO INVESTORS, INC. ET AL | $9.6M | 535,270 | 0.09% | 19q | -1.7%-$168.4K |
| CITADEL ADVISORS LLC | $9.0M | 32,796 | 0.00% | 19q | -98.2%-$493.6M |
| PEREGRINE CAPITAL MANAGEMENT LLC | $9.0M | 502,843 | 0.29% | 4q | +8.8%+$725.4K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $8.6M | 480,488 | 0.00% | 17q | -5.3%-$478.7K |
| Swiss National Bank | $8.4M | 465,900 | 0.00% | 17q | HELD |
| BNP PARIBAS FINANCIAL MARKETS | $8.1M | 450,934 | 0.00% | 7q | -59.4%-$11.8M |
| Robeco Schweiz AG | $7.6M | 424,000 | 0.12% | 5q | +84.3%+$3.5M |
| Montanaro Asset Management Ltd | $7.5M | 418,646 | 2.37% | 4q | +37.1%+$2.0M |
| ZEVENBERGEN CAPITAL INVESTMENTS LLC | $7.2M | 400,300 | 0.16% | 5q | +22.7%+$1.3M |
| LAZARD ASSET MANAGEMENT LLC | $7.0M | 392,003 | 0.01% | 11q | +21.6%+$1.2M |
| TD Asset Management Inc | $7.0M | 389,798 | 0.01% | 14q | +12.0%+$747.7K |
| ENVESTNET ASSET MANAGEMENT INC | $6.9M | 386,193 | 0.00% | 9q | +14.0%+$852.3K |
| BANK OF NOVA SCOTIA | $6.7M | 373,629 | 0.01% | 3q | -1.7%-$117.6K |
| Bridgewater Associates, LP | $6.4M | 359,138 | 0.03% | 3q | +2.1%+$131.8K |
| GABELLI FUNDS LLC | $6.3M | 351,160 | 0.04% | 19q | -4.6%-$301.6K |
| Burkehill Global Management, LP | $6.3M | 350,000 | 0.23% | 4q | HELD |
| ROYCE & ASSOCIATES LP | $6.2M | 347,262 | 0.05% | 18q | -23.1%-$1.9M |
| ALLIANCEBERNSTEIN L.P. | $6.2M | 332,517 | 0.00% | 17q | -79.9%-$24.6M |
Showing the largest 100 of 361 reported holders.
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 342 | $4.6B | 249,236,477 | 59 | 128 | 109 | 3.0% |
| Q1 2026 | 347 | $4.5B | 239,164,097 | 54 | 128 | 115 | 1.7% |
| Q4 2025 | 351 | $5.7B | 233,482,394 | 70 | 130 | 90 | 3.8% |
| Q3 2025 | 317 | $5.4B | 229,608,365 | 82 | 111 | 85 | 2.0% |
| Q2 2025 | 285 | $4.1B | 184,700,612 | 93 | 102 | 62 | 2.6% |
| Q1 2025 | 218 | $2.4B | 161,694,230 | 41 | 85 | 61 | 0.7% |
| Q4 2024 | 206 | $3.0B | 169,539,314 | 58 | 74 | 51 | 1.2% |
| Q3 2024 | 163 | $2.0B | 183,121,155 | 31 | 66 | 40 | 0.1% |
| Q2 2024 | 146 | $1.9B | 175,579,582 | 30 | 52 | 38 | 0.1% |
| Q1 2024 | 129 | $1.8B | 155,958,671 | 21 | 41 | 38 | 1.1% |
| Q4 2023 | 120 | $1.7B | 167,982,425 | 14 | 44 | 39 | 1.6% |
| Q3 2023 | 117 | $1.3B | 166,299,635 | 13 | 54 | 24 | 1.3% |
| Q2 2023 | 112 | $1.4B | 159,722,176 | 17 | 59 | 14 | 1.0% |
| Q1 2023 | 101 | $1.4B | 157,858,599 | 13 | 39 | 29 | 1.1% |
| Q4 2022 | 97 | $948.1M | 142,223,627 | 10 | 30 | 33 | 0.8% |
| Q3 2022 | 124 | $1.3B | 172,377,213 | 19 | 44 | 35 | 0.9% |
| Q2 2022 | 118 | $930.8M | 160,031,811 | 46 | 37 | 21 | 1.0% |
| Q1 2022 | 109 | $1.2B | 148,762,009 | 33 | 32 | 27 | 1.6% |
| Q4 2021 | 97 | $1.6B | 144,954,514 | 95 | 0 | 0 | 2.2% |
| Q3 2021 | 4 | $16.4M | 1,606,935 | 3 | 0 | 0 | 0.0% |
| Q2 2021 | 1 | $20.8K | 2,000 | 1 | 0 | 0 | 0.0% |