Century Aluminum Company
DE ˙ DB ˙ US1564311082
52,38 EUR ↓ -5,88 (-10,09%)
2026-06-05
PREȚUL ACȚIUNILOR
SecurityDE:EY3 / Century Aluminum Company
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership22,906 shares
Latest Disclosed Value $ 1,345,040
Janus Henderson Group Plc ownership in EY3 / Century Aluminum Company

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 22,906 shares of Century Aluminum Company (DE:EY3) valued at $1,157,211 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 22,906 shares of Century Aluminum Company. This represents a change in shares of 0.00% during the quarter. The current value of the position is $1,199,816 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)
2026-05-18 2026-03-31 13F/A-1 CENTURY ALUM COM 156431108 22,906 0 0.00 1,345 49.94 0.0002
2026-05-15 2026-03-31 13F CENTURY ALUM COM 156431108 22,906 0 0.00 1,345 49.94 0.0002
2026-02-17 2025-12-31 13F CENTURY ALUM COM 156431108 22,906 0 0.00 898 33.48 0.0004
2025-11-14 2025-09-30 13F CENTURY ALUM COM 156431108 22,906 0 0.00 672 63.11 0.0003
2025-08-14 2025-06-30 13F CENTURY ALUM COM 156431108 22,906 0 0.00 413 -2.83 0.0002
2025-05-15 2025-03-31 13F CENTURY ALUM COM 156431108 22,906 0 0.00 424 1.68 0.0002
2025-02-14 2024-12-31 13F CENTURY ALUM COM 156431108 22,906 0 0.00 417 12.40 0.0002
2024-11-14 2024-09-30 13F CENTURY ALUM COM 156431108 22,906 0 0.00 372 -3.13 0.0002
2024-08-14 2024-06-30 13F CENTURY ALUM COM 156431108 22,906 -266 -1.15 384 7.58 0.0002
2024-05-15 2024-03-31 13F CENTURY ALUM COM 156431108 23,172 0 0.00 356 26.69 0.0002
2024-02-14 2023-12-31 13F CENTURY ALUM COM 156431108 23,172 -203 -0.87 281 68.26 0.0002
2023-11-14 2023-09-30 13F CENTURY ALUM COM 156431108 23,375 3 0.01 168 -17.73 0.0001
2023-08-14 2023-06-30 13F CENTURY ALUM COM 156431108 23,372 136 0.59 204 -12.50 0.0001
2023-05-15 2023-03-31 13F CENTURY ALUM COM 156431108 23,236 12,280 112.08 232 160.67 0.0002
2023-02-14 2022-12-31 13F CENTURY ALUM COM 156431108 10,956 0 0.00 90 53.45 0.0001
2023-01-13 2022-09-30 13F/A-1 CENTURY ALUM COM 156431108 10,956 -217 -1.94 58 -29.27 0.0000
2022-11-14 2022-09-30 13F CENTURY ALUM COM 156431108 10,956 -217 58 0.0000
2022-08-15 2022-06-30 13F CENTURY ALUM COM 156431108 11,173 229 2.09 82 -71.53 0.0001
2022-05-16 2022-03-31 13F CENTURY ALUM COM 156431108 10,944 -3 -0.03 288 59.12 0.0001
2022-02-14 2021-12-31 13F CENTURY ALUM COM 156431108 10,947 10,947 181 0.0001
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.