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.
Key figures
- Insider buysLast 90 days, $312.0K in total
- 1
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, −6 vs. previous quarter
- 351
- 13F valueReported value at the end of Q2 2026
- $4.70B
- Superinvestors holdingAt the end of Q2 2026
- 1
Price chart
Superinvestors holding MIR, Q2 2026
1 superinvestor reports holding Mirion Technologies, Inc. on Form 13F. Percentages are the stock's share of each portfolio.
Maverick Capital
Lee Ainslie
0.8%
Mirion Technologies, Inc.'s share of the portfolio
- Shares
- 5,245,039
- Value
- $94.0M
Latest insider trades
Open-market purchases and sales by Mirion Technologies, Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 2, 2026 (view filing)4:10 PM ET | Sep 2 | Same day | Schopfer BrianChief Financial Officer | PPurchaseClass A Common Stock | +20.0K | $15.60 | +$312.0K | +2.2%933.3K after | |
| May 8, 2026 (view filing) | May 7 | 1 day | Moore Christopher A.Chief Accounting Officer (PAO) | SSaleClass A Common Stock | −8.40K | $19.64 | −$165.0K | −27.5%22.2K after | |
| Dec 12, 2025 (view filing) | Dec 10 | 2 days | Kingsley Lawrence DDirector | SSaleClass A Common Stock | −350.0K | $24.73 | −$8.66M | −9.1%3.51M after | |
| Nov 21, 2025 (view filing) | Nov 21 | Same day | Kingsley Lawrence DDirector | SSaleClass A Common Stock | −300.0K | $23.83 | −$7.15M | −7.1%3.90M after | |
| Nov 12, 2025 (view filing) | Nov 11 | 1 day | Eloy LoicNuclear & Safety President | SSaleClass A Common Stock | −45.0K | $27.24 | −$1.23M | −31.5%97.8K after | |
| Nov 12, 2025 (view filing) | Nov 10 | 2 days | Lee EmmanuelleChief Legal Officer | SSaleClass A Common Stock | −12.5K | $27.41 | −$342.6K | −12.9%84.6K after | |
| Nov 10, 2025 (view filing) | Nov 6 | 4 days | Schopfer BrianChief Financial Officer | SSaleClass A Common Stock | −100.0K | $27.66 | −$2.77M | −10.0%904.4K after | 2 lots |
| Aug 13, 2025 (view filing) | Aug 11-12 | 2 days | Logan Thomas DChief Executive Officer | SSaleClass A Common Stock | −500.0K | $21.48 | −$10.7M | −12.3%3.57M after | 2 lots |
| Aug 6, 2025 (view filing) | Aug 5 | 1 day | Eloy LoicNuclear & Safety President | SSaleClass A Common Stock | −22.2K | $21.30 | −$472.1K | −13.4%142.8K after | |
| Jun 27, 2025 (view filing) | Jun 25 | 2 days | Schopfer BrianChief Financial Officer | SSaleClass A Common Stock | −75.0K | $21.00 | −$1.57M | −7.5%919.4K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in Mirion Technologies, Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 38,262,307 | $686.0M | 0.01% | +404,610+1.1% | Added |
| Vanguard Portfolio Management LLC | 18,179,850 | $326.0M | 0.01% | +274,128+1.5% | Added |
| T. Rowe Price Investment Management, Inc. | 14,288,075 | $256.2M | 0.17% | −339,720−2.3% | Reduced |
| Vanguard Capital Management LLC | 10,613,869 | $190.3M | 0.00% | +108,674+1.0% | Added |
| Goldman Sachs Group Inc | 10,406,605 | $186.6M | 0.02% | +3,056,937+41.6% | Added |
| State Street Corp | 9,923,609 | $177.9M | 0.01% | +493,592+5.2% | Added |
| Alyeska Investment Group, L.P. | 9,534,955 | $171.0M | 0.44% | +6,833,375+252.9% | Added |
| Cooperman Leon G | 8,383,441 | $150.3M | 4.24% | 00.0% | Unchanged |
| FMR LLC | 7,329,386 | $131.4M | 0.01% | +777,694+11.9% | Added |
| Congress Asset Management Co | 6,685,434 | $119.9M | 0.74% | +5,571,373+500.1% | Added |