Mirion Technologies, Inc.
DE ˙ DB
15,18 € ↑0,21 (1,44%)
2026-06-03
DEL PRIS
SecurityDE:55I0 / Mirion Technologies, Inc.
InstitutionBarclays Plc
Latest Disclosed Ownership374,006 shares
Latest Disclosed Value $ 8,759,221
Barclays Plc reports 6.80% decrease in ownership of 55I0 / Mirion Technologies, Inc.

On February 13, 2026 - Barclays Plc filed a 13F-HR form disclosing ownership of 374,006 shares of Mirion Technologies, Inc. (DE:55I0) valued at $7,405,319 USD as of December 31, 2025. The entity filed a previous 13F-HR/A on March 31, 2026 disclosing 401,286 shares of Mirion Technologies, Inc.. This represents a change in shares of -6.80% during the quarter. The current value of the position is $5,675,541 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)
2026-02-13 2025-12-31 13F MIRION TECHNOLOGIES COM 60471A101 374,006 -27,280 -6.80 8,759 -6.15 0.0021
2026-03-31 2025-09-30 13F/A-3 MIRION TECHNOLOGIES COM 60471A101 401,286 -10,223 -2.48 9,334 5.35 0.0020
2026-03-19 2025-09-30 13F/A-2 MIRION TECHNOLOGIES COM 60471A101 307,680 -103,829 3,406 0.0009
2025-11-12 2025-09-30 13F MIRION TECHNOLOGIES COM 60471A101 401,286 -10,223 9,334 0.0020
2026-02-27 2025-06-30 13F/A-2 MIRION TECHNOLOGIES COM 60471A101 411,509 157,969 62.31 8,860 141.00 0.0020
2025-08-14 2025-06-30 13F/A-1 MIRION TECHNOLOGIES COM 60471A101 411,509 157,969 9 0.0020
2025-08-13 2025-06-30 13F MIRION TECHNOLOGIES COM 60471A101 411,509 157,969 9 0.0007
2026-03-17 2025-03-31 13F/A-1 MIRION TECHNOLOGIES COM 60471A101 253,540 -99,782 -28.24 3,676 -40.37 0.0010
2025-05-15 2025-03-31 13F MIRION TECHNOLOGIES COM 60471A101 253,540 -99,782 4 0.0010
2026-03-19 2024-12-31 13F/A-1 MIRION TECHNOLOGIES COM 60471A101 353,322 45,642 14.83 6,165 81.00 0.0017
2025-02-13 2024-12-31 13F MIRION TECHNOLOGIES COM 60471A101 353,322 45,642 6 0.0017
2026-03-31 2024-09-30 13F/A-2 MIRION TECHNOLOGIES COM 60471A101 307,680 235,288 325.02 3,406 338.35 0.0009
2024-11-19 2024-09-30 13F/A-1 MIRION TECHNOLOGIES COM 60471A101 307,680 235,288 3 0.0009
2024-11-15 2024-09-30 13F MIRION TECHNOLOGIES COM 60471A101 307,680 235,288 3 0.0003
2026-03-23 2024-06-30 13F/A-1 MIRION TECHNOLOGIES COM 60471A101 72,392 -103,006 -58.73 777 -61.03 0.0002
2024-08-14 2024-06-30 13F MIRION TECHNOLOGIES COM 60471A101 72,392 -103,006 1 0.0002
2026-03-24 2024-03-31 13F/A-1 MIRION TECHNOLOGIES COM 60471A101 175,398 -134,440 -43.39 1,994 -37.20 0.0007
2024-05-15 2024-03-31 13F MIRION TECHNOLOGIES COM 60471A101 175,398 -134,440 2 0.0007
2026-03-25 2023-12-31 13F/A-1 MIRION TECHNOLOGIES COM 60471A101 309,838 242,682 361.37 3,176 533.73 0.0012
2024-02-15 2023-12-31 13F MIRION TECHNOLOGIES COM 60471A101 309,838 242,682 3 0.0012
2026-03-26 2023-09-30 13F/A-1 MIRION TECHNOLOGIES COM 60471A101 67,156 -2,309 -3.32 502 -14.51 0.0003
2023-11-07 2023-09-30 13F MIRION TECHNOLOGIES COM 60471A101 67,156 -2,309 1 0.0003
2026-03-30 2023-06-30 13F/A-2 MIRION TECHNOLOGIES COM 60471A101 69,465 -126 -0.18 587 -1.35 0.0004
2023-09-20 2023-06-30 13F/A-1 MIRION TECHNOLOGIES COM 60471A101 69,465 -126 1 0.0004
2023-08-03 2023-06-30 13F MIRION TECHNOLOGIES COM 60471A101 69,465 -126 1 0.0004
2026-03-30 2023-03-31 13F/A-1 MIRION TECHNOLOGIES COM 60471A101 69,591 32,806 89.18 594 144.44 0.0003
2023-05-04 2023-03-31 13F MIRION TECHNOLOGIES COM 60471A101 69,591 32,806 1 0.0003
2026-03-30 2022-12-31 13F/A-1 MIRION TECHNOLOGIES COM 60471A101 36,785 30,977 533.35 243 465.12 0.0001
2023-02-13 2022-12-31 13F MIRION TECHNOLOGIES COM 60471A101 36,785 30,977 0 0.0001
2022-11-03 2022-09-30 13F MIRION TECHNOLOGIES COM 60471A101 5,808 -1,068 -15.53 43 7.50 0.0000
2022-08-12 2022-06-30 13F MIRION TECHNOLOGIES COM 60471A101 6,876 6,876 40 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.