Mirion Technologies, Inc.
DE ˙ DB
15,18 € ↓ -0,11 (-0,72%)
2026-06-05
DEL PRIS
SecurityDE:55I0 / Mirion Technologies, Inc.
InstitutionJpmorgan Chase & Co
Latest Disclosed Ownership2,619,120 shares
Latest Disclosed Value $ 45,363,172
Jpmorgan Chase & Co reports 56.83% increase in ownership of 55I0 / Mirion Technologies, Inc.

On May 13, 2026 - Jpmorgan Chase & Co filed a 13F-HR/A form disclosing ownership of 2,619,120 shares of Mirion Technologies, Inc. (DE:55I0) valued at $38,762,976 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 1,670,064 shares of Mirion Technologies, Inc.. This represents a change in shares of 56.83% during the quarter. The current value of the position is $39,745,146 USD.

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.

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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)
2026-05-13 2026-03-31 13F/A-1 MIRION TECHNOLOGIES COMMON 60471A101 2,619,120 949,056 56.83 45,363 15.98 0.0003
2026-02-11 2025-12-31 13F MIRION TECHNOLOGIES COMMON 60471A101 1,670,064 1,431,724 600.71 39,113 605.61 0.0025
2025-11-26 2025-09-30 13F/A-1 MIRION TECHNOLOGIES COMMON 60471A101 238,340 -586,929 -71.12 5,544 -68.80 0.0003
2025-11-07 2025-09-30 13F MIRION TECHNOLOGIES COMMON 60471A101 238,340 -586,929 5,544 0.0000
2025-08-12 2025-06-30 13F MIRION TECHNOLOGIES COMMON 60471A101 825,269 537,900 187.18 17,768 326.50 0.0012
2025-05-12 2025-03-31 13F MIRION TECHNOLOGIES COMMON 60471A101 287,369 -310,679 -51.95 4,167 -60.08 0.0003
2025-02-12 2024-12-31 13F MIRION TECHNOLOGIES COMMON 60471A101 598,048 377,915 171.68 10,436 328.37 0.0008
2024-12-26 2024-09-30 13F/A-1 MIRION TECHNOLOGIES COMMON 60471A101 220,133 -129,586 -37.05 2,437 -35.13 0.0002
2024-11-08 2024-09-30 13F MIRION TECHNOLOGIES COMMON 60471A101 220,133 -129,586 2,437 0.0002
2024-12-26 2024-06-30 13F/A-1 MIRION TECHNOLOGIES COMMON 60471A101 349,719 -242,995 -41.00 3,756 -44.28 0.0003
2024-08-12 2024-06-30 13F MIRION TECHNOLOGIES COMMON 60471A101 349,719 -242,995 3,756 0.0003
2024-12-26 2024-03-31 13F/A-1 MIRION TECHNOLOGIES COMMON 60471A101 592,714 254,511 75.25 6,739 94.43 0.0006
2024-05-10 2024-03-31 13F MIRION TECHNOLOGIES COMMON 60471A101 592,714 254,511 6,739 0.0006
2024-12-26 2023-12-31 13F/A-1 MIRION TECHNOLOGIES COMMON 60471A101 338,203 100,437 42.24 3,467 95.16 0.0003
2024-02-12 2023-12-31 13F MIRION TECHNOLOGIES COMMON 60471A101 338,203 100,437 3,467 0.0003
2023-11-14 2023-09-30 13F MIRION TECHNOLOGIES COMMON 60471A101 237,766 5,128 2.20 1,776 -9.62 0.0002
2023-08-11 2023-06-30 13F MIRION TECHNOLOGIES COMMON 60471A101 232,638 64,396 38.28 1,966 36.84 0.0002
2023-05-18 2023-03-31 13F/A-1 MIRION TECHNOLOGIES COMMON 60471A101 168,242 33,203 24.59 1,436 0.0002
2023-05-11 2023-03-31 13F MIRION TECHNOLOGIES COMMON 60471A101 3,510 -131,529 540 0.0000
2023-02-13 2022-12-31 13F MIRION TECHNOLOGIES COMMON 60471A101 135,039 13,897 11.47 1 -100.00 0.0001
2022-11-14 2022-09-30 13F MIRION TECHNOLOGIES COMMON 60471A101 121,142 8,073 7.14 905 39.02 0.0001
2022-08-11 2022-06-30 13F MIRION TECHNOLOGIES COMMON 60471A101 113,069 113,069 651 0.0001
2022-05-11 2022-03-31 13F MIRION TECHNOLOGIES COMMON 60471A101 0 -1,129 -100.00 0 -100.00
2022-02-11 2021-12-31 13F/A-1 MIRION TECHNOLOGIES COMMON 60471A101 1,129 1,129 12 0.0000
2022-02-10 2021-12-31 13F MIRION TECHNOLOGIES COMMON 60471A101 1,129 1,129 12 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.