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 |
|---|---|---|---|---|---|
| FNY Investment Advisers, LLC | 222 | $2.00K | 0.00% | +222 | New |
| Byrne Asset Management LLC | 225 | $2.00K | 0.00% | +225 | 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 |
| Blue Bell Private Wealth Management, LLC | 700 | $7.00K | 0.00% | +700 | New |
| Advisor Group Holdings, Inc. | 891 | $9.00K | 0.00% | +891 | New |
| JPMorgan Chase & Co | 1,129 | $12.0K | 0.00% | +1,129 | New |
| American Portfolios Advisors | 1,165 | $12.2K | 0.00% | +1,165 | New |
| Anchor Investment Management, LLC | 2,000 | $20.9K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 5,936 | $62.0K | 0.00% | +5,936 | New |
| Twinbeech Capital LP | 11,217 | $117.0K | 0.01% | +11,217 | New |
| Perpetual Investment Management Ltd | 12,175 | $127.0K | 0.01% | +12,175 | New |
| Tuttle Tactical Management | 12,277 | $129.0K | 0.20% | +12,277 | New |
| Penserra Capital Management LLC | 12,866 | $134.0K | 0.00% | +12,866 | New |
| Exos Asset Management LLC | 15,605 | $163.0K | 0.08% | +15,605 | New |
| Tower Research Capital LLC (TRC) | 17,120 | $179.0K | 0.00% | +17,120 | New |
| Proequities, Inc. | 17,400 | $182.0K | 0.01% | +17,400 | New |
| Blueshift Asset Management, LLC | 18,177 | $190.0K | 0.02% | +18,177 | New |
| Victory Capital Management Inc | 19,675 | $206.0K | 0.00% | +19,675 | New |
| Wolverine Trading, LLC | 20,246 | $213.0K | 0.00% | +20,246 | New |
| GWM Advisors LLC | 22,402 | $235.0K | 0.00% | +22,402 | New |
| Bank of Montreal | 24,600 | $260.0K | 0.00% | +24,600 | 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 |
| CenterBook Partners LP | 27,462 | $288.0K | 0.17% | +27,462 | New |
| HighTower Advisors, LLC | 33,000 | $345.0K | 0.00% | +33,000 | New |
| Shay Capital LLC | 34,000 | $356.0K | 0.13% | +34,000 | New |
| Levin Capital Strategies, L.P. | 38,685 | $405.0K | 0.04% | +38,685 | New |
| Mirabella Financial Services LLP | 40,720 | $426.0K | 0.04% | +40,720 | New |
| Integrity Capital Management (HK) Ltd | 46,492 | $487.0K | 1.57% | +46,492 | New |
| Bank of New York Mellon Corp | 48,870 | $512.0K | 0.00% | +48,870 | New |
| Bank of America Corp | 50,800 | $532.0K | 0.00% | +50,800 | New |
| Susquehanna International Group, LLP | 54,356 | $569.0K | 0.00% | +54,356 | New |
| Group One Trading, L.P. | 54,497 | $571.0K | 0.01% | +54,497 | New |
| Defender Capital, LLC. | 60,000 | $682.0K | 0.22% | +60,000 | New |
| Telemetry Investments, L.L.C. | 68,500 | $717.0K | 0.94% | +68,500 | New |
| Cruiser Capital Advisors, LLC | 68,543 | $718.0K | 0.50% | +68,543 | New |
| Advisory Research Inc | 97,351 | $1.02M | 0.08% | +97,351 | New |
| Citadel Advisors LLC | 106,449 | $1.11M | 0.00% | +106,449 | New |
| K.J. Harrison & Partners Inc | 116,450 | $1.22M | 0.17% | +116,450 | New |
| UBS Group AG | 141,153 | $1.48M | 0.00% | +141,153 | New |
| Kepos Capital LP | 150,000 | $1.57M | 0.13% | +150,000 | New |
| Gamco Investors, Inc. Et Al | 157,200 | $1.65M | 0.01% | +157,200 | New |
| MYDA Advisors LLC | 160,000 | $1.68M | 0.53% | +160,000 | New |
| Ionic Capital Management LLC | 183,899 | $1.93M | 0.33% | +183,899 | New |
| Northern Trust Corp | 196,836 | $2.06M | 0.00% | +196,836 | New |
| Balyasny Asset Management LLC | 212,989 | $2.23M | 0.01% | +212,989 | New |
| Cubist Systematic Strategies, LLC | 243,953 | $2.55M | 0.02% | +243,953 | New |
| Qube Research & Technologies Ltd | 251,016 | $2.63M | 0.02% | +251,016 | New |
| Weiss Multi-Strategy Advisers LLC | 260,050 | $2.72M | 0.06% | +260,050 | New |
| Moore Capital Management, LP | 275,000 | $2.88M | 0.07% | +275,000 | New |
| Brant Point Investment Management LLC | 276,749 | $2.90M | 0.53% | +276,749 | New |
| Diameter Capital Partners LP | 281,777 | $2.95M | 0.27% | +281,777 | New |
| Saba Capital Management, L.P. | 300,000 | $3.14M | 0.06% | +300,000 | New |
| State Street Corp | 319,900 | $3.35M | 0.00% | +319,900 | New |
| Jefferies Group LLC | 355,840 | $3.73M | 0.07% | +355,840 | New |
| Wolverine Asset Management LLC | 357,582 | $3.74M | 0.04% | +357,582 | New |
| Resolute Capital Asset Partners LLC | 401,437 | $4.20M | 2.74% | +401,437 | New |
| One Fin Capital Management LP | 435,000 | $4.55M | 1.90% | +435,000 | New |
| Saya Management LP | 498,753 | $5.22M | 4.69% | +498,753 | New |
| Artal Group S.A. | 500,000 | $5.24M | 0.15% | +500,000 | New |
| Charles Schwab Investment Management Inc | 501,714 | $5.25M | 0.00% | +501,714 | New |
| Gabelli Funds LLC | 553,566 | $5.80M | 0.04% | +553,566 | New |
| Carlson Capital L P | 650,000 | $6.81M | 0.39% | +650,000 | New |
| Hudson Bay Capital Management LP | 703,137 | $7.36M | 0.08% | +703,137 | New |
| Millennium Management LLC | 839,989 | $8.79M | 0.01% | +839,989 | New |
| Principal Financial Group Inc | 852,353 | $8.92M | 0.01% | +852,353 | New |
| Geode Capital Management, LLC | 886,596 | $9.28M | 0.00% | +886,596 | New |
| FIL Ltd | 966,500 | $10.1M | 0.01% | +966,500 | New |
| Clearline Capital LP | 1,032,471 | $10.8M | 1.48% | +1,032,471 | New |
| Manufacturers Life Insurance Company, The | 1,116,000 | $11.7M | 0.01% | +1,116,000 | New |
| First Manhattan Co | 1,162,435 | $12.2M | 0.04% | +1,162,435 | New |
| Kingdon Capital Management, L.L.C. | 1,238,500 | $13.0M | 1.94% | +1,238,500 | New |
| Bpifrance SA | 1,286,446 | $13.5M | 0.32% | +1,286,446 | New |
| BlackRock Inc. | 1,366,427 | $14.3M | 0.00% | +1,366,427 | New |
| Sculptor Capital LP | 1,553,052 | $16.3M | 0.15% | +1,553,052 | New |
| Barrow Hanley Mewhinney & Strauss LLC | 1,649,165 | $17.3M | 0.05% | +1,649,165 | New |
| Morgan Stanley | 1,705,958 | $17.9M | 0.00% | +1,705,958 | New |
| Janus Henderson Group PLC | 1,892,034 | $19.8M | 0.01% | +1,892,034 | New |
| Ratan Capital Management LP | 2,363,080 | $24.7M | 3.77% | +2,363,080 | New |
| Myriad Asset Management Ltd. | 2,429,545 | $25.4M | 2.77% | +2,429,545 | 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 |
| Bamco Inc | 3,800,000 | $39.8M | 0.08% | +3,800,000 | New |
| Corsair Capital Management, L.P. | 4,386,399 | $45.9M | 8.63% | +4,386,399 | New |
| Locust Wood Capital Advisers, LLC | 4,686,731 | $49.1M | 2.76% | +4,686,731 | New |
| Swedbank AB | 5,840,100 | $61.5M | 0.10% | +5,840,100 | New |
| Senator Investment Group LP | 6,875,000 | $72.0M | 1.39% | +6,875,000 | New |
| Vanguard Group Inc | 7,028,757 | $73.6M | 0.00% | +7,028,757 | New |
| FMR LLC | 7,500,000 | $78.5M | 0.01% | +7,500,000 | New |
| Alyeska Investment Group, L.P. | 13,593,453 | $142.3M | 1.64% | +13,593,453 | New |
| Goldman Sachs Group Inc | 53,265,743 | $557.7M | 0.14% | +53,265,743 | 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 |