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, Q1 2024
Institutional positions in Mirion Technologies, Inc. as of Mar 31, 2024. 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
- 143
- +18 vs. Q4 2023
- Shares held
- 188.6M
- +722.9K (+0.4%) vs. Q4 2023
- Total value
- $2.14B
- +$218.4M (+11.3%) vs. Q4 2023
- New holders
- 32
- 49 more added
- Sold out
- 14
- 45 more reduced
Compare with Q4 2023: 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, Q1 2024
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Renaissance Technologies LLC | 302,500 | $3.44M | 0.01% | +302,500 | New |
| Rhumbline Advisers | 324,229 | $3.69M | 0.00% | +411+0.1% | Added |
| Swiss National Bank | 343,600 | $3.91M | 0.00% | 00.0% | Unchanged |
| TD Asset Management Inc | 344,452 | $3.92M | 0.00% | +8,398+2.5% | Added |
| Bank of America Corp | 359,503 | $4.09M | 0.00% | +235,985+191.1% | Added |
| Chescapmanager LLC | 373,161 | $4.24M | 0.72% | +373,161 | New |
| Royce & Associates LP | 430,000 | $4.89M | 0.04% | +205,000+91.1% | Added |
| First Trust Advisors LP | 454,069 | $5.16M | 0.01% | +195,288+75.5% | Added |
| Verition Fund Management LLC | 548,054 | $6.23M | 0.06% | +548,054 | New |
| CIBC World Markets Corp | 575,000 | $6.54M | 0.04% | −500,000−46.5% | Reduced |
| UBS Group AG | 578,000 | $6.57M | 0.00% | +208,628+56.5% | Added |
| JPMorgan Chase & Co | 592,714 | $6.74M | 0.00% | +254,511+75.3% | Added |
| Carlson Capital L P | 618,478 | $7.03M | 0.57% | +79,414+14.7% | Added |
| Gabelli Funds LLC | 706,040 | $8.03M | 0.06% | −10,000−1.4% | Reduced |
| Bank of New York Mellon Corp | 718,867 | $8.17M | 0.00% | −53,874−7.0% | Reduced |
| Arrowstreet Capital, Limited Partnership | 736,950 | $8.38M | 0.01% | +736,950 | New |
| Gamco Investors, Inc. Et Al | 768,645 | $8.74M | 0.09% | −11,200−1.4% | Reduced |
| CIBC World Markets Inc. | 805,000 | $9.15M | 0.02% | +805,000 | New |
| Crestline Management, LP | 810,000 | $9.21M | 0.87% | −90,000−10.0% | Reduced |
| Morgan Stanley | 1,011,842 | $11.5M | 0.00% | −583,027−36.6% | Reduced |
| Nuveen Asset Management, LLC | 1,163,309 | $13.2M | 0.00% | −321,651−21.7% | Reduced |
| Charles Schwab Investment Management Inc | 1,480,154 | $16.8M | 0.00% | +17,193+1.2% | Added |
| Schwartz Investment Counsel Inc | 1,499,300 | $17.0M | 0.62% | +9,300+0.6% | Added |
| Lord, Abbett & Co. LLC | 1,536,211 | $17.5M | 0.06% | −120,569−7.3% | Reduced |
| Northern Trust Corp | 1,710,413 | $19.4M | 0.00% | −38,437−2.2% | Reduced |
| Corsair Capital Management, L.P. | 1,742,217 | $19.8M | 5.56% | −592,574−25.4% | Reduced |
| First Manhattan Co | 1,760,374 | $20.0M | 0.06% | −27,685−1.5% | Reduced |
| American Century Companies Inc | 2,435,470 | $27.7M | 0.02% | +441,336+22.1% | Added |
| ArrowMark Colorado Holdings LLC | 2,798,992 | $31.8M | 0.36% | −827,346−22.8% | Reduced |
| Adage Capital Partners GP, L.L.C. | 3,040,799 | $34.6M | 0.07% | +2,100,000+223.2% | Added |
| Geode Capital Management, LLC | 4,200,607 | $47.8M | 0.00% | +113,081+2.8% | Added |
| State Street Corp | 5,050,536 | $57.4M | 0.00% | +36,970+0.7% | Added |
| Dimensional Fund Advisors LP | 5,079,967 | $57.8M | 0.02% | +1,341,067+35.9% | Added |
| P2 Capital Partners, LLC | 5,520,000 | $62.8M | 7.42% | −327,122−5.6% | Reduced |
| Select Equity Group, L.P. | 5,960,533 | $67.8M | 0.24% | +3,740,265+168.5% | Added |
| Alyeska Investment Group, L.P. | 6,923,799 | $78.7M | 0.49% | +1,765,923+34.2% | Added |
| Cooperman Leon G | 7,513,400 | $85.4M | 3.56% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 9,403,114 | $106.9M | 0.06% | +3,9290.0% | Added |
| Swedbank AB | 10,778,000 | $122.5M | 0.17% | +404,056+3.9% | Added |
| BlackRock Inc. | 15,555,495 | $176.9M | 0.00% | −391,489−2.5% | Reduced |
| T. Rowe Price Investment Management, Inc. | 20,641,440 | $234.7M | 0.14% | +775,214+3.9% | Added |
| Vanguard Group Inc | 21,308,031 | $242.3M | 0.00% | +159,404+0.8% | Added |
| Goldman Sachs Group Inc | 34,806,291 | $395.7M | 0.08% | −5890.0% | Reduced |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −4,916,574−100.0% | Sold out |
| Kohlberg Kravis Roberts & Co. L.P. | 0 | $0 | 0.00% | −3,445,894−100.0% | Sold out |
| Pantechnicon Advisors LLP | 0 | $0 | 0.00% | −1,200,000−100.0% | Sold out |
| Roubaix Capital, LLC | 0 | $0 | 0.00% | −336,031−100.0% | Sold out |
| Pentwater Capital Management LP | 0 | $0 | 0.00% | −335,000−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −82,519−100.0% | Sold out |
| State Board of Administration of Florida Retirement System | 0 | $0 | 0.00% | −57,210−100.0% | Sold out |
| Susquehanna Fundamental Investments, LLC | 0 | $0 | 0.00% | −51,387−100.0% | Sold out |
| Susquehanna Portfolio Strategies, LLC | 0 | $0 | 0.00% | −50,856−100.0% | Sold out |
| Deerfield Management Company, L.P. (Series C) | 0 | $0 | 0.00% | −16,404−100.0% | Sold out |
| Cipher Capital LP | 0 | $0 | 0.00% | −10,076−100.0% | Sold out |
| Bank of Montreal | 0 | $0 | 0.00% | −1,173−100.0% | Sold out |
| Cutler Group LP | 0 | $0 | 0.00% | −229−100.0% | Sold out |
| AdvisorNet Financial, Inc | 0 | $0 | 0.00% | −19−100.0% | Sold out |