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Who owns MIRWhat MIR owns — n/a

Who owns Mirion Technologies, Inc.?

Institutional ownership of MIR from SEC Form 13F filings across 241 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.

241

13F holders

$3.14B

value, 2026 filers

72.9%

of shares outstanding (177.3M sh)

43

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

#ManagerSharesValue% of fund% of co.Δ shares QoQ
1BlackRock, Inc.38.3M$686.0M0.0%15.7%+1.1%
2VANGUARD PORTFOLIO MANAGEMENT LLC18.2M$326.0M0.0%7.5%+1.5%
3VANGUARD CAPITAL MANAGEMENT LLC10.6M$190.3M0.0%4.4%-49.5%
4GOLDMAN SACHS GROUP INC10.4M$186.6M0.0%4.3%+41.6%
5FMR LLC7.3M$131.4M0.0%3%+11.9%
6GEODE CAPITAL MANAGEMENT, LLC6.3M$112.6M0.0%2.6%+5.7%
7Jupiter Topco LLCNEW4.1M$73.8M0.0%1.7%new
8BAMCO INC /NY/3.9M$70.0M0.1%1.6%+221.8%
9MORGAN STANLEY3.9M$69.9M0.0%1.6%+70.5%
10NEUBERGER BERMAN GROUP LLC3.2M$57.4M0.0%1.3%+273.6%
11AMERICAN CENTURY COMPANIES INC3.2M$57.0M0.0%1.3%+16.2%
12Invesco Ltd.2.8M$49.7M0.0%1.1%+20.7%
13UBS Group AG2.7M$48.2M0.0%1.1%-28.7%
14JPMORGAN CHASE & CO2.6M$45.7M0.0%1.1%-0.5%
15NORTHERN TRUST CORP2.6M$46.4M0.0%1.1%+9.3%
16Swedbank AB2.5M$45.4M0.0%1%-19.9%
17Sixth Street Partners Management Company, L.P.NEW2.4M$43.9M7.6%1%new
18CHARLES SCHWAB INVESTMENT MANAGEMENT INC2.4M$43.9M0.0%1%+7.5%
19Nuveen, LLC2.1M$37.8M0.0%0.9%+8.2%
20ROYAL BANK OF CANADA1.8M$32.0M0.0%0.7%-9.1%
21VANGUARD FIDUCIARY TRUST CO1.7M$30.9M0.0%0.7%+1.7%
22Public Sector Pension Investment Board1.7M$30.1M0.1%0.7%+92.1%
23Davidson Kempner Capital Management LP1.6M$29.0M0.3%0.7%+23.2%
24Troluce Capital Advisors LLC1.5M$27.6M2.8%0.6%+2.6%
25Rockefeller Capital Management L.P.1.5M$26.3M0.0%0.6%+5.3%

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.

EvidInvest is an independent research and information tool. Figures are calculated from public SEC filings and third-party market data and are provided for informational and educational purposes only. EvidInvest does not provide investment advice, brokerage, or financial services, and is not affiliated with any company it covers. Verify all figures against primary sources before making any decision.