Mirion Technologies
MIR · NYSE
$15.24+$0.31 (+2.08%)TodayMarket closed ·
Prev close $14.93
Who owns MIR
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 52.1% of MIR’s shares.
- BlackRock Institutional Trust Company, N.A.13.8%
- Vanguard Portfolio Management, LLC7.3%
- T. Rowe Price Investment Management, Inc.5.7%
- Vanguard Capital Management, LLC4.3%
- Next 6 largest institutions21.0%
- All other shareholders47.9%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 34.46M | 13.84% |
| Vanguard Portfolio Management, LLC | 18.18M | 7.30% |
| T. Rowe Price Investment Management, Inc. | 14.29M | 5.74% |
| Vanguard Capital Management, LLC | 10.61M | 4.26% |
| Kuwait Investment Authority | 10.17M | 4.08% |
| State Street Investment Management (US) | 9.92M | 3.98% |
| Alyeska Investment Group, L.P. | 9.53M | 3.83% |
| Omega Advisors, Inc. | 8.38M | 3.37% |
| Goldman Sachs Asset Management, L.P. | 7.50M | 3.01% |
| Congress Asset Management Company, LLP | 6.69M | 2.68% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 14.92M | 5.99% |
| Vanguard Total Stock Market Index Fund | 7.40M | 2.97% |
| iShares Russell 2000 ETF | 6.26M | 2.51% |
| Vanguard Small-Cap Index Fund | 5.34M | 2.14% |
| T. Rowe Price Small Cap Stock Fund | 5.20M | 2.09% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $312.00K (1 trade) and sold $164.98K (1 trade) of MIR on the open market.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Schopfer Brian | Buy | 20.00K | $312.00K |
| Bockhorst Kenneth | Award | 7.38K | — |
| Kingsley Lawrence D | Award | 7.38K | — |
| Markopoulos Jody | Award | 7.38K | — |
| Rege Sheila | Award | 7.38K | — |
| Etzel Steven W. | Award | 7.38K | — |
| KUO JOHN W | Award | 7.38K | — |
| CASCELLA ROBERT | Award | 7.38K | — |
| Moore Christopher A. | Sale | 8.40K | $164.98K |
| Logan Thomas D | Gift | 311.85K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 38.38M
- Days to cover
- 9.68
- % of shares outstanding
- 15.41%
- Average daily volume
- 3.97M
- Change since last report
- −3.3%
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