Who owns Mirion Technologies, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of MIR from SEC Form 13F filings across 351 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 351 institutions disclosed 262.0M shares of Mirion Technologies, Inc. worth $4.70B — about 107.1% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
351
13F holders
$4.70B
value, 2026 filers
107.1%
of shares outstanding (262.0M sh)
65
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of MIR's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 38.3M | $686.0M | 0.0% | 15.6% | +1.1% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 18.2M | $326.0M | 0.0% | 7.4% | +1.5% |
| 3 | T. Rowe Price Investment Management, Inc. | 14.3M | $256.2M | 0.2% | 5.8% | -2.3% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 10.6M | $190.3M | 0.0% | 4.3% | +1.0% |
| 5 | GOLDMAN SACHS GROUP INC | 10.4M | $186.6M | 0.0% | 4.3% | +41.6% |
| 6 | STATE STREET CORP | 9.9M | $177.9M | 0.0% | 4.1% | +5.2% |
| 7 | Alyeska Investment Group, L.P. | 9.5M | $171.0M | 0.4% | 3.9% | +252.9% |
| 8 | COOPERMAN LEON G | 8.4M | $150.3M | 4.2% | 3.4% | 0.0% |
| 9 | FMR LLC | 7.3M | $131.4M | 0.0% | 3% | +11.9% |
| 10 | CONGRESS ASSET MANAGEMENT CO | 6.7M | $119.9M | 0.7% | 2.7% | +500.1% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 6.3M | $112.6M | 0.0% | 2.6% | +5.7% |
| 12 | MAVERICK CAPITAL LTD | 5.2M | $94.0M | 0.8% | 2.1% | +97.9% |
| 13 | DIMENSIONAL FUND ADVISORS LP | 4.9M | $87.1M | 0.0% | 2% | +3.5% |
| 14 | Jupiter Topco LLCNEW | 4.1M | $73.8M | 0.0% | 1.7% | new |
| 15 | BAMCO INC /NY/ | 3.9M | $70.0M | 0.1% | 1.6% | +221.8% |
| 16 | MORGAN STANLEY | 3.9M | $69.9M | 0.0% | 1.6% | +70.5% |
| 17 | NEUBERGER BERMAN GROUP LLC | 3.2M | $57.4M | 0.0% | 1.3% | +273.6% |
| 18 | AMERICAN CENTURY COMPANIES INC | 3.2M | $57.0M | 0.0% | 1.3% | +16.2% |
| 19 | Invesco Ltd. | 2.8M | $49.7M | 0.0% | 1.1% | +20.7% |
| 20 | UBS Group AG | 2.7M | $48.2M | 0.0% | 1.1% | -28.7% |
| 21 | JPMORGAN CHASE & CO | 2.6M | $45.7M | 0.0% | 1.1% | -0.5% |
| 22 | NORTHERN TRUST CORP | 2.6M | $46.4M | 0.0% | 1.1% | +9.3% |
| 23 | Swedbank AB | 2.5M | $45.4M | 0.0% | 1% | -19.9% |
| 24 | LOOMIS SAYLES & CO L P | 2.5M | $45.3M | 0.1% | 1% | -5.4% |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.4M | $43.9M | 0.0% | 1% | +7.5% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.