13F reference period
Q2 2026
Security Snapshot
Mirion Technologies, Inc. - Common Stock (MIR) Institutional Ownership
CUSIP: 60471A101
13F Institutional Holders and Ownership History from Q2 2021 to Q3 2026
Institutions Reporting
349
Shares (Excl. Options)
262.06M
Full value: 262,063,085 · shares · 30 Jun 2026Price
$17.93
The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.
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- Security type / class
- Equity / Common Stock
- Symbol
- MIR on NYSE
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 262,063,085
- Total 13F value
- $4,696,612,756
- Portfolio coverage rank
- 0%
- Share change
- +8,841,162
- Value change
- +$148,826,953
- Number of holders
- 349
- Shares outstanding
- 245,072,565
- SEC-reported price per share
- $16.42
- Insider filing price
- $16.42
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source
Key facts
- MIR - Mirion Technologies, Inc. - Common Stock is tracked under CUSIP 60471A101.
- 349 institutions reported positions in Q2 2026.
- 6 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 362 to 349 between Q1 2026 and Q2 2026.
- SEC-reported value moved from to
$4.71B
Full value: $4,714,919,941 · USD · 31 Mar 2026.$4.7B
Full value: $4,696,612,756 · USD · 30 Jun 2026
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 349 institutions filings for Q2 2026.
Security key
60471A101
13F reference period
Q2 2026
13F holders
349
13D/G owners
6
CIK / CUSIP context first
Open Q2 2026 holders
MIR full holder history
Mirion Technologies, Inc. SEC filings
Mirion Technologies, Inc. company facts
Mirion Technologies, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 60471A101:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
6
Security
MIR
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 15% | $786,972,923 | 35,690,382 | BlackRock, Inc. | 30 Sep 2025 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 7.4% | $336,832,173 | 18,118,998 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| T. Rowe Price Investment Management, Inc. | 6.1% | $353,943,064 | 15,112,855 | T. Rowe Price Investment Management, Inc. | 31 Dec 2025 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5% | $229,161,718 | 12,327,150 | Vanguard Capital Management | 31 Mar 2026 | |||
| KUWAIT INVESTMENT AUTHORITY ON BEHALF OF THE GOVT OF KUWAIT | 4.1% | $238,218,661 | 10,171,591 | Kuwait Investment Authority, acting for and on behalf of the Government of the State of Kuwait (KIA) | 29 Jul 2022 | |||
| GSAM Holdings LLC | 2.3% | $77,448,166 | 5,187,419 | GOLDMAN SACHS GROUP INC | 17 Dec 2024 |
As of 30 Jun 2026,
349
institutional investors reported holding
shares of
Mirion Technologies, Inc. - Common Stock (MIR).
This represents
107%
of the company’s total
outstanding shares.
262.06M
Full value: 262,063,085 · shares · 30 Jun 2026245.07M
Full value: 245,072,565 · shares · Stored outstanding share count13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
76%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 16% | 38,262,307 | +1.1% | 0.01% | $686,043,174 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 7.4% | 18,179,850 | +1.5% | 0.01% | $325,964,711 |
| T. Rowe Price Investment Management, Inc. | 5.8% | 14,288,075 | -2.3% | 0.17% | $256,186,000 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.3% | 10,613,869 | +1% | 0% | $190,306,671 |
| GOLDMAN SACHS GROUP INC | 4.2% | 10,406,605 | +42% | 0.02% | $186,590,423 |
| STATE STREET CORP | 4% | 9,923,609 | +5.2% | 0.01% | $177,930,309 |
| Alyeska Investment Group, L.P. | 3.9% | 9,534,955 | +253% | 0.44% | $170,961,743 |
| COOPERMAN LEON G | 3.4% | 8,383,441 | 0% | 4.2% | $150,315,097 |
| FMR LLC | 3% | 7,329,386 | +12% | 0.01% | $131,415,889 |
| CONGRESS ASSET MANAGEMENT CO | 2.7% | 6,685,434 | +500% | 0.74% | $119,869,832 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.6% | 6,280,048 | +5.7% | 0.01% | $112,622,147 |
| MAVERICK CAPITAL LTD | 2.1% | 5,245,039 | +98% | 0.85% | $94,043,549 |
| DIMENSIONAL FUND ADVISORS LP | 2% | 4,859,755 | +3.5% | 0.02% | $87,125,072 |
| Jupiter Topco LLC | 1.7% | 4,114,766 | 0% | 0.03% | $73,778,294 |
| BAMCO INC /NY/ | 1.6% | 3,906,083 | +222% | 0.11% | $70,036,068 |
| MORGAN STANLEY | 1.6% | 3,896,753 | +71% | 0% | $69,868,790 |
| NEUBERGER BERMAN GROUP LLC | 1.3% | 3,199,539 | +274% | 0.04% | $57,367,734 |
| AMERICAN CENTURY COMPANIES INC | 1.3% | 3,176,241 | +16% | 0.03% | $56,950,035 |
| Invesco Ltd. | 1.1% | 2,769,589 | +21% | 0% | $49,658,731 |
| UBS Group AG | 1.1% | 2,686,713 | -29% | 0.01% | $48,172,763 |
| JPMORGAN CHASE & CO | 1.1% | 2,606,507 | -0.48% | 0% | $45,694,266 |
| NORTHERN TRUST CORP | 1.1% | 2,586,059 | +9.3% | 0.01% | $46,368,038 |
| Swedbank AB | 1% | 2,531,200 | -20% | 0.04% | $45,384,416 |
| LOOMIS SAYLES & CO L P | 1% | 2,525,188 | -5.4% | 0.06% | $45,276,621 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1% | 2,447,222 | +7.5% | 0.01% | $43,878,690 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
22
Headline period
Q2 2026
Rows shown
1-22 of 22
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q3 | 20,805,046 | $294,181,330 | -$24,978,012 | $14.12 | 99 |
| 2026 Q2 | 262,063,085 | $4,696,612,756 | +$148,826,953 | $17.93 | 349 |
| 2026 Q1 | 253,507,398 | $4,714,919,941 | -$19,701,480 | $18.59 | 362 |
| 2025 Q4 | 252,155,603 | $5,906,878,302 | -$101,886,999 | $23.42 | 364 |
| 2025 Q3 | 255,032,548 | $5,930,723,272 | +$1,121,022,486 | $23.26 | 338 |
| 2025 Q2 | 207,351,906 | $4,463,739,712 | +$390,863,249 | $21.53 | 300 |
| 2025 Q1 | 190,143,613 | $2,758,422,550 | -$73,903,530 | $14.50 | 228 |
| 2024 Q4 | 193,940,415 | $3,383,987,298 | -$173,575,773 | $17.45 | 221 |
| 2024 Q3 | 204,602,306 | $2,264,947,633 | +$83,120,387 | $11.07 | 172 |
| 2024 Q2 | 197,272,750 | $2,118,677,881 | +$90,798,200 | $10.74 | 154 |
| 2024 Q1 | 188,536,766 | $2,143,665,971 | +$20,871,393 | $11.37 | 139 |
| 2023 Q4 | 187,870,653 | $1,925,693,855 | +$7,764,495 | $10.25 | 124 |
| 2023 Q3 | 187,912,198 | $1,403,706,732 | +$61,043,099 | $7.47 | 124 |
| 2023 Q2 | 174,773,821 | $1,476,846,436 | +$77,018,708 | $8.45 | 96 |
| 2023 Q1 | 170,036,490 | $1,452,110,276 | +$150,571,811 | $8.54 | 115 |
| 2022 Q4 | 153,291,192 | $1,013,210,591 | -$120,248,912 | $6.61 | 118 |
| 2022 Q3 | 170,652,341 | $1,274,773,618 | +$81,805,780 | $7.47 | 119 |
| 2022 Q2 | 160,031,240 | $921,771,417 | +$53,869,755 | $5.76 | 112 |
| 2022 Q1 | 148,701,807 | $1,200,015,627 | +$16,144,772 | $8.07 | 106 |
| 2021 Q4 | 144,900,158 | $1,517,510,036 | +$1,510,417,095 | $10.47 | 93 |
| 2021 Q3 | 1,606,935 | $16,422,440 | +$16,402,000 | $10.22 | 4 |
| 2021 Q2 | 2,000 | $20,800 | +$20,800 | $10.40 | 1 |