MIRION TECHNOLOGIES INC CLASS A MIR
$17.38
-3.0% 52w: $15.82 – $29.75
Latest 13F among current holders filed 17 days ago (Jun 18, 2026)
Price — last 12 months
research preview data15.8222.7929.75
Jun 20, 2025 Jul 2, 2026
Institutional holders
362
-3 QoQ
13F value
$4.72B
-20.9% QoQ
Smart-money holders
21
signal tier ≥ 2
New smart buyers
5
Q1 2026
Options barometer
7.2×
$72.9M calls / $10.1M puts
Institutional value by quarter
Number of holders
Who owns MIR?
Q1 2026 filings| Fund | Type | Shares | Value | % of fund | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | Index provider | 37.9M | $703.8M | 0.0% | -0.9% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Diversified mechanical | 17.9M | $332.9M | 0.0% | — |
| T. Rowe Price Investment Management, Inc. | Long only active | 14.6M | $271.9M | 0.2% | -16.1% |
| VANGUARD CAPITAL MANAGEMENT LLC | Diversified mechanical | 10.5M | $195.3M | 0.0% | — |
| STATE STREET CORP | Index provider | 9.4M | $175.3M | 0.0% | +2.5% |
| COOPERMAN LEON G ★3 | Fundamental concentrated | 8.4M | $155.8M | 5.1% | Held |
| GOLDMAN SACHS GROUP INC | Bank broker | 7.3M | $136.6M | 0.0% | +40.0% |
| FMR LLC | Long only active | 6.6M | $121.8M | 0.0% | -22.1% |
| GEODE CAPITAL MANAGEMENT, LLC | Index provider | 5.9M | $110.4M | 0.0% | +2.7% |
| MILLENNIUM MANAGEMENT LLC | Multistrat pod | 5.1M | $94.9M | 0.1% | New |
| DIMENSIONAL FUND ADVISORS LP | Quant stat arb | 4.7M | $87.2M | 0.0% | +14.4% |
| Bank of New York Mellon Corp | Diversified mechanical | 4.5M | $84.3M | 0.0% | +47.4% |
| JANUS HENDERSON GROUP PLC | Diversified mechanical | 4.0M | $75.2M | 0.0% | -12.0% |
| UBS Group AG | Bank broker | 3.8M | $70.0M | 0.0% | -22.4% |
| Swedbank AB | Other | 3.2M | $58.7M | 0.1% | -7.0% |
| AMERICAN CENTURY COMPANIES INC | Diversified mechanical | 2.7M | $50.8M | 0.0% | +6.9% |
| Alyeska Investment Group, L.P. | Quant stat arb | 2.7M | $50.2M | 0.1% | +76.4% |
| LOOMIS SAYLES & CO L P | Other | 2.7M | $49.6M | 0.1% | -6.2% |
| MAVERICK CAPITAL LTD ★2 | Fundamental diversified | 2.6M | $49.3M | 0.6% | New |
| Two Creeks Capital Management, LP ★3 | Fundamental concentrated | 2.4M | $45.5M | 4.8% | -16.2% |
| JPMORGAN CHASE & CO | Bank broker | 2.6M | $45.4M | 0.0% | +56.8% |
| NORTHERN TRUST CORP | Index provider | 2.4M | $44.0M | 0.0% | +1.5% |
| Invesco Ltd. | Index provider | 2.3M | $42.7M | 0.0% | -26.0% |
| MORGAN STANLEY | Bank broker | 2.3M | $42.5M | 0.0% | +9.0% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Index provider | 2.3M | $42.3M | 0.0% | -2.9% |
| TCW GROUP INC | Other | 2.2M | $41.6M | 0.3% | -8.7% |
| ALLIANCEBERNSTEIN L.P. | Long only active | 1.7M | $38.7M | 0.0% | +415.9% |
| FRANKLIN RESOURCES INC | Long only active | 2.0M | $37.1M | 0.0% | +6.3% |
| ROYAL BANK OF CANADA | Bank broker | 2.0M | $36.5M | 0.0% | -8.7% |
| Nuveen, LLC | Diversified mechanical | 1.9M | $36.3M | 0.0% | -3.1% |
| Conestoga Capital Advisors, LLC ★2 | Fundamental diversified | 1.8M | $34.0M | 0.7% | -5.6% |
| CITADEL ADVISORS LLC | Multistrat pod | 1.8M | $33.9M | 0.0% | +12.5% |
| VANGUARD FIDUCIARY TRUST CO | Diversified mechanical | 1.7M | $31.5M | 0.0% | — |
| Chescapmanager LLC ★3 | Fundamental concentrated | 1.7M | $30.8M | 4.9% | Held |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Other | 1.6M | $29.5M | 0.0% | -56.6% |
| Troluce Capital Advisors LLC ★2 | Fundamental concentrated | 1.5M | $27.9M | 3.0% | +76.5% |
| Rockefeller Capital Management L.P. | Diversified mechanical | 1.4M | $25.9M | 0.0% | +22.3% |
| EMERALD ADVISERS, LLC | Other | 1.4M | $25.7M | 0.8% | +21.5% |
| Stephens Investment Management Group LLC | Other | 1.4M | $25.6M | 0.4% | +69.7% |
| BANK OF AMERICA CORP /DE/ | Bank broker | 1.4M | $25.2M | 0.0% | -0.3% |
| Davidson Kempner Capital Management LP | Quant stat arb | 1.3M | $24.4M | 0.9% | +41.6% |
| BROWN ADVISORY INC | Diversified mechanical | 1.3M | $24.2M | 0.0% | -19.4% |
| TimesSquare Capital Management, LLC | Other | 1.3M | $24.1M | 0.4% | +33.8% |
| AMERIPRISE FINANCIAL INC | Bank broker | 1.3M | $24.0M | 0.0% | -44.8% |
| Daiwa Securities Group Inc. | Diversified mechanical | 1.2M | $22.6M | 0.1% | +2490.4% |
| BAMCO INC /NY/ | Other | 1.2M | $22.6M | 0.1% | +86.7% |
| PRINCIPAL FINANCIAL GROUP INC | Diversified mechanical | 1.2M | $22.2M | 0.0% | -30.0% |
| VOYA INVESTMENT MANAGEMENT LLC | Diversified mechanical | 1.2M | $21.7M | 0.0% | +32.8% |
| CONGRESS ASSET MANAGEMENT CO | Other | 1.1M | $20.7M | 0.1% | New |
| SEGALL BRYANT & HAMILL, LLC | Other | 1.1M | $20.7M | 0.3% | -4.9% |
Exits are not a bearish signal: our backtest shows stocks specialists exit keep outperforming for 3+ quarters — selling usually means profit-taking, not a forecast.
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