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MIR

Mirion Technologies, Inc.
$16.33 +0.04 (+0.25%) At close · Jul 15
Market Cap
$4.03B
Shares
250,420,273

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 363
Total Value: $4,530,455,942
Total Shares: 244,069,232
Showing 1–100 of 378 holdings by value · page 1 of 4

Institutional Ownership Trend

21 quarters

Superinvestors Holding MIR

All superinvestors →
Mario Gabelli $10,125,266 Ray Dalio $6,539,683

Holder Concentration

Across 363 13F filers
Top Holder
15.8%
Jun 2023 → Mar 2026 · range 11.2% – 19.4%
of institutional value
Top 5
33.8%
Jun 2023 → Mar 2026 · range 33.8% – 56.8%
of institutional value
Top 10
46.4%
Jun 2023 → Mar 2026 · range 46.4% – 74.6%
of institutional value
HHI
406
Jun 2023 → Mar 2026 · range 388 – 848
Broadly held
Showing 100 of 378
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $703,774,581 15.53% 37,857,697
Mega T. Rowe Price Investment Management, Inc. $271,930,709 6.00% 14,627,795
Mega VANGUARD CAPITAL MANAGEMENT LLC $195,291,575 4.31% 10,505,195
Mega STATE STREET CORP $175,304,016 3.87% 9,430,017
Mid COOPERMAN LEON G $155,848,168 3.44% 8,383,441
Mega GOLDMAN SACHS GROUP INC $136,630,327 3.02% 7,349,668
Mega FMR LLC $121,795,952 2.69% 6,551,692
Large CONGRESS ASSET MANAGEMENT CO $119,869,831 2.65% 6,685,434
Mega GEODE CAPITAL MANAGEMENT, LLC $110,427,852 2.44% 5,940,175
Mega MILLENNIUM MANAGEMENT LLC $94,935,430 2.10% 5,106,801
Mega DIMENSIONAL FUND ADVISORS LP $87,266,811 1.93% 4,694,288
Mega Bank of New York Mellon Corp Bank $84,337,843 1.86% 4,536,732
Mega JANUS HENDERSON GROUP PLC $75,161,023 1.66% 4,043,089
Mega UBS Group AG $70,025,591 1.55% 3,766,842
Mega AMERICAN CENTURY COMPANIES INC $50,802,045 1.12% 2,732,762
Large Alyeska Investment Group, L.P. $50,222,372 1.11% 2,701,580
Large LOOMIS SAYLES & CO L P $49,639,537 1.10% 2,670,228
Mid MAVERICK CAPITAL LTD $49,261,250 1.09% 2,649,879
Mega JPMORGAN CHASE & CO $48,689,439 1.07% 2,619,120
Small Two Creeks Capital Management, LP $45,528,006 1.00% 2,449,059
Mega Swedbank AB Bank $45,384,416 1.00% 2,531,200
Mega NORTHERN TRUST CORP Bank $43,988,343 0.97% 2,366,237
Mega Invesco Ltd. $42,650,105 0.94% 2,294,250
Mega MORGAN STANLEY $42,479,409 0.94% 2,285,068
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $42,333,984 0.93% 2,277,245
Large TCW GROUP INC $41,612,339 0.92% 2,238,426
Mega FRANKLIN RESOURCES INC $37,108,314 0.82% 1,996,144
Mega ROYAL BANK OF CANADA Bank $36,462,496 0.80% 1,961,404
Mega Nuveen, LLC $36,250,349 0.80% 1,949,992
Mid Conestoga Capital Advisors, LLC $34,038,643 0.75% 1,831,019
Mega CITADEL ADVISORS LLC $33,894,253 0.75% 1,823,252
Mega VANGUARD FIDUCIARY TRUST CO Bank $31,501,461 0.70% 1,694,538
Mid Chescapmanager LLC $30,843,356 0.68% 1,659,137
Mega ALLIANCEBERNSTEIN L.P. $30,737,245 0.68% 1,653,429
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $29,544,324 0.65% 1,589,259
Small Troluce Capital Advisors LLC $27,885,000 0.62% 1,500,000
Large Rockefeller Capital Management L.P. $25,890,737 0.57% 1,392,724
Mid EMERALD ADVISERS, LLC $25,683,460 0.57% 1,381,574
Mid Stephens Investment Management Group LLC $25,558,944 0.56% 1,374,876
Mega BANK OF AMERICA CORP /DE/ Bank $25,194,987 0.56% 1,355,298
Mid Davidson Kempner Capital Management LP $24,442,485 0.54% 1,314,819
Large BROWN ADVISORY INC $24,168,356 0.53% 1,300,073
Mid TimesSquare Capital Management, LLC $24,058,527 0.53% 1,294,165
Mega AMERIPRISE FINANCIAL INC $23,975,334 0.53% 1,289,690
Large Daiwa Securities Group Inc. Broker-Dealer $22,633,269 0.50% 1,217,497
Large BAMCO INC /NY/ $22,563,575 0.50% 1,213,748
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $22,423,258 0.49% 1,206,200
Mega PRINCIPAL FINANCIAL GROUP INC $22,234,550 0.49% 1,196,049
Large VOYA INVESTMENT MANAGEMENT LLC $21,717,357 0.48% 1,168,228
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $21,118,240 0.47% 1,136,000
Mid SEGALL BRYANT & HAMILL, LLC $20,669,737 0.46% 1,111,874
Mega BNP PARIBAS ARBITRAGE, SA $20,660,870 0.46% 1,111,397
Mega RAYMOND JAMES FINANCIAL INC $19,996,368 0.44% 1,075,652
Large Allspring Global Investments Holdings, LLC $19,687,367 0.43% 1,059,030
Large Select Equity Group, L.P. $19,621,150 0.43% 1,055,468
Mega CITIGROUP INC $19,484,252 0.43% 1,048,104
Small CORSAIR CAPITAL MANAGEMENT, L.P. $18,263,169 0.40% 982,419
Small Alta Park Capital, LP $18,164,995 0.40% 977,138
Mega JENNISON ASSOCIATES LLC $17,524,717 0.39% 942,696
Large LORD, ABBETT & CO. LLC $17,419,647 0.38% 937,044
Large FRED ALGER MANAGEMENT, LLC $16,909,575 0.37% 909,606
Large Public Sector Pension Investment Board Pension $16,271,641 0.36% 875,290
Mid EMERALD MUTUAL FUND ADVISERS TRUST Mutual Fund $16,237,732 0.36% 873,466
Mega NEUBERGER BERMAN GROUP LLC $15,920,271 0.35% 856,389
Mid SCHWARTZ INVESTMENT COUNSEL INC $15,881,437 0.35% 854,300
Mega WELLINGTON MANAGEMENT GROUP LLP $15,574,923 0.34% 837,812
Large FEDERATED HERMES, INC. $15,177,749 0.34% 816,447
Large Tidal Investments LLC $14,407,491 0.32% 775,013
Large NOMURA HOLDINGS INC $14,213,170 0.31% 764,560
Mid OBERWEIS ASSET MANAGEMENT INC/ $13,835,923 0.31% 744,267
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $13,520,098 0.30% 727,278
Small Pier Capital, LLC $13,083,846 0.29% 703,811
Large SILVERCREST ASSET MANAGEMENT GROUP LLC $12,647,799 0.28% 680,355
Mega WELLS FARGO & COMPANY/MN $12,612,142 0.28% 678,437
Mega RHUMBLINE ADVISERS $11,793,774 0.26% 634,415
Large Ensign Peak Advisors, Inc $11,738,060 0.26% 631,418
Mega DEUTSCHE BANK AG\ Bank $11,396,561 0.25% 613,048
Mid ArrowMark Colorado Holdings LLC $10,692,131 0.24% 575,155
Large Caption Management, LLC $10,369,502 0.23% 557,800
Mega Legal & General Group Plc $10,334,365 0.23% 555,910
Mid GAMCO INVESTORS, INC. ET AL $10,125,266 0.22% 544,662
Mid Artemis Investment Management LLP $10,022,501 0.22% 539,134
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $9,428,582 0.21% 507,186
Mid AXIOM INVESTORS LLC /DE $8,775,149 0.19% 472,036
Mega D. E. Shaw & Co., Inc. $8,702,666 0.19% 468,137
Mega Swiss National Bank Bank $8,661,081 0.19% 465,900
Mid PEREGRINE CAPITAL MANAGEMENT LLC $8,595,699 0.19% 462,383
Large SEI INVESTMENTS CO $8,520,893 0.19% 458,359
Large Aberdeen Group plc $8,485,628 0.19% 456,462
Mid ROYCE & ASSOCIATES LP $8,398,125 0.19% 451,755
Mid EXCHANGE TRADED CONCEPTS, LLC $7,565,795 0.17% 406,982
Small Bastion Asset Management Inc. $7,234,447 0.16% 389,158
Large ZACKS INVESTMENT MANAGEMENT $7,229,223 0.16% 388,877
Mega D. E. Shaw & Co., Inc. $7,138,560 0.16% 384,000
Mega PRICE T ROWE ASSOCIATES INC /MD/ $7,116,028 0.16% 382,788
Large BANK OF NOVA SCOTIA Bank $7,067,657 0.16% 380,186
Mid MIROVA $6,848,184 0.15% 368,380
Large GABELLI FUNDS LLC $6,840,748 0.15% 367,980
Large Sumitomo Mitsui DS Asset Management Company, Ltd $6,759,286 0.15% 363,598
Large Bridgewater Associates, LP $6,539,683 0.14% 351,785
Key facts CIK 1809987 CUSIP 60471A101 13F (30d) 22 filings 22 filers Visit website Investor relations

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