Mirion Technologies (MIR) Superinvestor holders
20 of the superinvestors we track hold Mirion Technologies (MIR) in their latest 13F filings, $393M in total.
Summary
The largest holder is Lee Ainslie (Maverick Capital), with $94M, 0.8% of the portfolio.
In their latest quarter: 4 opened a new position, 7 added, 9 trimmed.
Who holds it
Each investor's latest 13F filing, largest stake first. What a 13F shows.
| Investor | Last change | Shares | Value | % of portfolio | Filed for |
|---|---|---|---|---|---|
| Lee Ainslie Maverick Capital |
Added | 5,245,039 | $94M | 0.8% | Q2 2026 |
| Ron Baron Baron Capital (BAMCO) |
Added | 3,906,083 | $70M | 0.1% | Q2 2026 |
| Aziz Hamzaogullari Loomis Sayles & Co |
Trimmed | 2,525,188 | $45M | 0.1% | Q2 2026 |
| Tony Yoseloff Davidson Kempner Capital Management |
Added | 1,619,998 | $29M | 0.7% | Q2 2026 |
| George Loening Select Equity Group |
Added | 1,576,023 | $28M | 0.1% | Q2 2026 |
| Hersh Cohen ClearBridge Investments |
New position | 1,096,729 | $20M | 0.0% | Q2 2026 |
| Jennison Associates | Trimmed | 887,170 | $16M | 0.0% | Q2 2026 |
| Jay Petschek Corsair Capital Management |
Trimmed | 867,670 | $16M | 2.0% | Q2 2026 |
| Conestoga Conestoga Capital Advisors |
Trimmed | 970,261 | $14M | 0.4% | Q3 2026 |
| Steve Cohen Point72 Asset Management |
Added | 677,509 | $12M | 0.0% | Q2 2026 |
| WCM Investment Management | New position | 591,279 | $10M | 0.0% | Q2 2026 |
| Mario Gabelli GAMCO Investors |
Trimmed | 535,270 | $10M | 0.1% | Q2 2026 |
| David Shaw D. E. Shaw & Co. |
Trimmed | 400,454 | $7M | 0.0% | Q2 2026 |
| Ray Dalio Bridgewater Associates |
Added | 359,138 | $6M | 0.0% | Q2 2026 |
| Brandon Haley Holocene Advisors |
Added | 337,724 | $6M | 0.0% | Q2 2026 |
| Cliff Asness AQR Capital Management |
Trimmed | 207,596 | $4M | 0.0% | Q2 2026 |
| Alger Fred Alger Management |
Trimmed | 156,083 | $3M | 0.0% | Q2 2026 |
| Ensign Peak Ensign Peak Advisors |
Trimmed | 116,040 | $2M | 0.0% | Q2 2026 |
| Alan Howard Brevan Howard |
New position | 72,392 | $1M | 0.0% | Q2 2026 |
| Two Sigma Two Sigma Investments |
New position | 19,771 | $354,494 | 0.0% | Q2 2026 |
Holders by quarter
| Quarter | Superinvestors holding it |
|---|---|
| Q2 2026 | 21 |
| Q1 2026 | 19 |
| Q4 2025 | 18 |
| Q3 2025 | 19 |
| Q2 2025 | 20 |
| Q1 2025 | 16 |
| Q4 2024 | 20 |
| Q3 2024 | 15 |
Questions about Mirion Technologies
Which superinvestors own Mirion Technologies?
20 of the superinvestors we track hold Mirion Technologies (MIR) in their latest 13F filings, $393M in total. Lee Ainslie, Ron Baron, Aziz Hamzaogullari, Tony Yoseloff, George Loening, Hersh Cohen.
Who is the largest superinvestor holder of MIR?
The largest holder is Lee Ainslie (Maverick Capital), with $94M, 0.8% of the portfolio.
From Mirion Technologies's annual reports filed with the SEC (XBRL data), standardised by Investingly. Information only, not investment advice.