Mirion Technologies, Inc.
MX ˙ BMV
SecurityMX:MIR / Mirion Technologies, Inc.
InstitutionComerica Bank
Latest Disclosed Ownership222,756 shares
Latest Disclosed Value $ 5,216,949
Comerica Bank reports 24.23% increase in ownership of MIR / Mirion Technologies, Inc.

On January 29, 2026 - Comerica Bank filed a 13F-HR form disclosing ownership of 222,756 shares of Mirion Technologies, Inc. (MX:MIR) valued at $5,216,949 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 179,306 shares of Mirion Technologies, Inc.. This represents a change in shares of 24.23% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-01-29 2025-12-31 13F MIRION TECHNOLOGIES COM CL A 60471A101 222,756 43,450 24.23 5,217 25.08 0.0169
2025-11-14 2025-09-30 13F MIRION TECHNOLOGIES COM CL A 60471A101 179,306 176,874 7,272.78 4,171 7,919.23 0.0157
2025-08-14 2025-06-30 13F MIRION TECHNOLOGIES COM CL A 60471A101 2,432 1,395 134.52 52 246.67 0.0002
2025-05-14 2025-03-31 13F MIRION TECHNOLOGIES COM CL A 60471A101 1,037 -209 -16.77 15 -28.57 0.0001
2025-02-14 2024-12-31 13F/A-1 MIRION TECHNOLOGIES COM CL A 60471A101 1,246 185 17.44 22 90.91 0.0001
2025-02-14 2024-12-31 13F MIRION TECHNOLOGIES COM CL A 60471A101 1,246 185 22 0.0001
2024-11-14 2024-09-30 13F MIRION TECHNOLOGIES COM CL A 60471A101 1,061 102 10.64 12 10.00 0.0000
2024-08-15 2024-06-30 13F MIRION TECHNOLOGIES INC COM CL A COMMON 60471A101 959 293 43.99 10 42.86 0.0000
2024-05-16 2024-03-31 13F MIRION TECHNOLOGIES INC COM CL COMMON 60471A101 666 36 5.71 8 16.67 0.0000
2024-02-14 2023-12-31 13F MIRION TECHNOLOGIES INC COM CL COMMON 60471A101 630 325 106.56 6 200.00 0.0000
2023-11-21 2023-09-30 13F MIRION TECHNOLOGIES COMMON 60471A101 305 305 2 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.