Mirion Technologies, Inc.
MIR- Exchange
- NYSE
- Industry
- Measuring & Controlling Devices, NEC
- SEC CIK
- 0001809987
In the last 90 days, Mirion Technologies, Inc. insiders filed 1 open-market purchase and 0 sales; 351 institutions reported holding it in 13F filings for Q2 2026, worth $4.70B in total; Maverick Capital is the only superinvestor holding it.
13F holders, Q4 2021
Institutional positions in Mirion Technologies, Inc. as of Dec 31, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 93
- +90 vs. Q3 2021
- Shares held
- 144.9M
- +144.7M (+69,992.5%) vs. Q3 2021
- Total value
- $1.52B
- +$1.52B (+71,736.8%) vs. Q3 2021
- New holders
- 92
- 0 more added
- Sold out
- 2
- 0 more reduced
1 institution that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2021: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MIR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 351 | $4.70B |
| Q1 2026 | 362 | $4.71B |
| Q4 2025 | 365 | $5.91B |
| Q3 2025 | 343 | $5.93B |
| Q2 2025 | 302 | $4.46B |
| Q1 2025 | 230 | $2.69B |
| Q4 2024 | 224 | $3.38B |
| Q3 2024 | 176 | $2.27B |
| Q2 2024 | 155 | $2.12B |
| Q1 2024 | 143 | $2.14B |
| Q4 2023 | 125 | $1.93B |
| Q3 2023 | 127 | $1.40B |
| Q2 2023 | 124 | $1.53B |
| Q1 2023 | 117 | $1.45B |
| Q4 2022 | 119 | $1.01B |
| Q3 2022 | 121 | $1.27B |
| Q2 2022 | 115 | $921.8M |
| Q1 2022 | 108 | $1.20B |
| Q4 2021 | 93 | $1.52B |
| Q3 2021 | 4 | $16.4M |
| Q2 2021 | 1 | $20.8K |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2021
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Goldman Sachs Group Inc | 53,265,743 | $557.7M | 0.14% | +53,265,743 | New |
| Alyeska Investment Group, L.P. | 13,593,453 | $142.3M | 1.64% | +13,593,453 | New |
| FMR LLC | 7,500,000 | $78.5M | 0.01% | +7,500,000 | New |
| Vanguard Group Inc | 7,028,757 | $73.6M | 0.00% | +7,028,757 | New |
| Senator Investment Group LP | 6,875,000 | $72.0M | 1.39% | +6,875,000 | New |
| Swedbank AB | 5,840,100 | $61.5M | 0.10% | +5,840,100 | New |
| Locust Wood Capital Advisers, LLC | 4,686,731 | $49.1M | 2.76% | +4,686,731 | New |
| Corsair Capital Management, L.P. | 4,386,399 | $45.9M | 8.63% | +4,386,399 | New |
| Bamco Inc | 3,800,000 | $39.8M | 0.08% | +3,800,000 | New |
| Cooperman Leon G | 3,000,000 | $31.4M | 1.58% | +3,000,000 | New |
| Blue Pool Management Ltd. | 3,000,000 | $31.4M | 4.04% | +3,000,000 | New |
| Myriad Asset Management Ltd. | 2,429,545 | $25.4M | 2.77% | +2,429,545 | New |
| Ratan Capital Management LP | 2,363,080 | $24.7M | 3.77% | +2,363,080 | New |
| Janus Henderson Group PLC | 1,892,034 | $19.8M | 0.01% | +1,892,034 | New |
| Morgan Stanley | 1,705,958 | $17.9M | 0.00% | +1,705,958 | New |
| Barrow Hanley Mewhinney & Strauss LLC | 1,649,165 | $17.3M | 0.05% | +1,649,165 | New |
| Sculptor Capital LP | 1,553,052 | $16.3M | 0.15% | +1,553,052 | New |
| BlackRock Inc. | 1,366,427 | $14.3M | 0.00% | +1,366,427 | New |
| Bpifrance SA | 1,286,446 | $13.5M | 0.32% | +1,286,446 | New |
| Kingdon Capital Management, L.L.C. | 1,238,500 | $13.0M | 1.94% | +1,238,500 | New |
| First Manhattan Co | 1,162,435 | $12.2M | 0.04% | +1,162,435 | New |
| Manufacturers Life Insurance Company, The | 1,116,000 | $11.7M | 0.01% | +1,116,000 | New |
| Clearline Capital LP | 1,032,471 | $10.8M | 1.48% | +1,032,471 | New |
| FIL Ltd | 966,500 | $10.1M | 0.01% | +966,500 | New |
| Geode Capital Management, LLC | 886,596 | $9.28M | 0.00% | +886,596 | New |
| Principal Financial Group Inc | 852,353 | $8.92M | 0.01% | +852,353 | New |
| Millennium Management LLC | 839,989 | $8.79M | 0.01% | +839,989 | New |
| Hudson Bay Capital Management LP | 703,137 | $7.36M | 0.08% | +703,137 | New |
| Carlson Capital L P | 650,000 | $6.81M | 0.39% | +650,000 | New |
| Gabelli Funds LLC | 553,566 | $5.80M | 0.04% | +553,566 | New |
| Charles Schwab Investment Management Inc | 501,714 | $5.25M | 0.00% | +501,714 | New |
| Artal Group S.A. | 500,000 | $5.24M | 0.15% | +500,000 | New |
| Saya Management LP | 498,753 | $5.22M | 4.69% | +498,753 | New |
| One Fin Capital Management LP | 435,000 | $4.55M | 1.90% | +435,000 | New |
| Resolute Capital Asset Partners LLC | 401,437 | $4.20M | 2.74% | +401,437 | New |
| Wolverine Asset Management LLC | 357,582 | $3.74M | 0.04% | +357,582 | New |
| Jefferies Group LLC | 355,840 | $3.73M | 0.07% | +355,840 | New |
| State Street Corp | 319,900 | $3.35M | 0.00% | +319,900 | New |
| Saba Capital Management, L.P. | 300,000 | $3.14M | 0.06% | +300,000 | New |
| Diameter Capital Partners LP | 281,777 | $2.95M | 0.27% | +281,777 | New |
| Brant Point Investment Management LLC | 276,749 | $2.90M | 0.53% | +276,749 | New |
| Moore Capital Management, LP | 275,000 | $2.88M | 0.07% | +275,000 | New |
| Weiss Multi-Strategy Advisers LLC | 260,050 | $2.72M | 0.06% | +260,050 | New |
| Qube Research & Technologies Ltd | 251,016 | $2.63M | 0.02% | +251,016 | New |
| Cubist Systematic Strategies, LLC | 243,953 | $2.55M | 0.02% | +243,953 | New |
| Balyasny Asset Management LLC | 212,989 | $2.23M | 0.01% | +212,989 | New |
| Northern Trust Corp | 196,836 | $2.06M | 0.00% | +196,836 | New |
| Ionic Capital Management LLC | 183,899 | $1.93M | 0.33% | +183,899 | New |
| MYDA Advisors LLC | 160,000 | $1.68M | 0.53% | +160,000 | New |
| Gamco Investors, Inc. Et Al | 157,200 | $1.65M | 0.01% | +157,200 | New |
| Kepos Capital LP | 150,000 | $1.57M | 0.13% | +150,000 | New |
| UBS Group AG | 141,153 | $1.48M | 0.00% | +141,153 | New |
| K.J. Harrison & Partners Inc | 116,450 | $1.22M | 0.17% | +116,450 | New |
| Citadel Advisors LLC | 106,449 | $1.11M | 0.00% | +106,449 | New |
| Advisory Research Inc | 97,351 | $1.02M | 0.08% | +97,351 | New |
| Cruiser Capital Advisors, LLC | 68,543 | $718.0K | 0.50% | +68,543 | New |
| Telemetry Investments, L.L.C. | 68,500 | $717.0K | 0.94% | +68,500 | New |
| Defender Capital, LLC. | 60,000 | $682.0K | 0.22% | +60,000 | New |
| Group One Trading, L.P. | 54,497 | $571.0K | 0.01% | +54,497 | New |
| Susquehanna International Group, LLP | 54,356 | $569.0K | 0.00% | +54,356 | New |
| Bank of America Corp | 50,800 | $532.0K | 0.00% | +50,800 | New |
| Bank of New York Mellon Corp | 48,870 | $512.0K | 0.00% | +48,870 | New |
| Integrity Capital Management (HK) Ltd | 46,492 | $487.0K | 1.57% | +46,492 | New |
| Mirabella Financial Services LLP | 40,720 | $426.0K | 0.04% | +40,720 | New |
| Levin Capital Strategies, L.P. | 38,685 | $405.0K | 0.04% | +38,685 | New |
| Shay Capital LLC | 34,000 | $356.0K | 0.13% | +34,000 | New |
| HighTower Advisors, LLC | 33,000 | $345.0K | 0.00% | +33,000 | New |
| CenterBook Partners LP | 27,462 | $288.0K | 0.17% | +27,462 | New |
| FDx Advisors, Inc. | 26,424 | $277.0K | 0.01% | +26,424 | New |
| YorkBridge Wealth Partners, LLC | 26,424 | $277.0K | 0.06% | +26,424 | New |
| Bank of Montreal | 24,600 | $260.0K | 0.00% | +24,600 | New |
| GWM Advisors LLC | 22,402 | $235.0K | 0.00% | +22,402 | New |
| Wolverine Trading, LLC | 20,246 | $213.0K | 0.00% | +20,246 | New |
| Victory Capital Management Inc | 19,675 | $206.0K | 0.00% | +19,675 | New |
| Blueshift Asset Management, LLC | 18,177 | $190.0K | 0.02% | +18,177 | New |
| Proequities, Inc. | 17,400 | $182.0K | 0.01% | +17,400 | New |
| Tower Research Capital LLC (TRC) | 17,120 | $179.0K | 0.00% | +17,120 | New |
| Exos Asset Management LLC | 15,605 | $163.0K | 0.08% | +15,605 | New |
| Penserra Capital Management LLC | 12,866 | $134.0K | 0.00% | +12,866 | New |
| Tuttle Tactical Management | 12,277 | $129.0K | 0.20% | +12,277 | New |
| Perpetual Investment Management Ltd | 12,175 | $127.0K | 0.01% | +12,175 | New |
| Twinbeech Capital LP | 11,217 | $117.0K | 0.01% | +11,217 | New |
| Wells Fargo & Company | 5,936 | $62.0K | 0.00% | +5,936 | New |
| Anchor Investment Management, LLC | 2,000 | $20.9K | 0.00% | 00.0% | Unchanged |
| American Portfolios Advisors | 1,165 | $12.2K | 0.00% | +1,165 | New |
| JPMorgan Chase & Co | 1,129 | $12.0K | 0.00% | +1,129 | New |
| Advisor Group Holdings, Inc. | 891 | $9.00K | 0.00% | +891 | New |
| Blue Bell Private Wealth Management, LLC | 700 | $7.00K | 0.00% | +700 | New |
| Howe & Rusling Inc | 273 | $3.00K | 0.00% | +273 | New |
| Albion Financial Group | 300 | $3.00K | 0.00% | +300 | New |
| FourThought Financial, LLC | 249 | $3.00K | 0.00% | +249 | New |
| FNY Investment Advisers, LLC | 222 | $2.00K | 0.00% | +222 | New |
| Byrne Asset Management LLC | 225 | $2.00K | 0.00% | +225 | New |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −153,727−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −51,000−100.0% | Sold out |
| Marshall Wace North America L.P. | – | – | – | – | Not filed |