Century Aluminum Company
US ˙ NasdaqGS ˙ US1564311082

SecurityCENX / Century Aluminum Company
InstitutionFranklin Resources Inc
Latest Disclosed Ownership124,816 shares
Latest Disclosed Value $ 7,325,451
Franklin Resources Inc reports 163.44% increase in ownership of CENX / Century Aluminum Company

On May 13, 2026 - Franklin Resources Inc filed a 13F-HR form disclosing ownership of 124,816 shares of Century Aluminum Company (US:CENX) valued at $7,325,451 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 47,380 shares of Century Aluminum Company. This represents a change in shares of 163.44% during the quarter. The current value of the position is $8,367,041 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 CENTURY ALUM COM 156431108 124,816 77,436 163.44 7,325 294.67 0.0003
2026-02-11 2025-12-31 13F CENTURY ALUM COM 156431108 47,380 832 1.79 1,856 35.87 0.0005
2025-11-13 2025-09-30 13F CENTURY ALUM COM 156431108 46,548 1,624 3.61 1,367 68.85 0.0003
2025-08-12 2025-06-30 13F CENTURY ALUM COM 156431108 44,924 -793 -1.73 810 -4.60 0.0002
2025-05-13 2025-03-31 13F CENTURY ALUM COM 156431108 45,717 15,602 51.81 849 54.74 0.0002
2025-02-12 2024-12-31 13F CENTURY ALUM COM 156431108 30,115 0 0.00 549 4.58 0.0002
2024-11-27 2024-09-30 13F/A-1 CENTURY ALUM COM 156431108 30,115 2,198 7.87 524 12.21 0.0001
2024-11-12 2024-09-30 13F CENTURY ALUM COM 156431108 30,115 2,198 524 0.0000
2024-08-14 2024-06-30 13F CENTURY ALUM COM 156431108 27,917 3,208 12.98 468 22.89 0.0001
2024-05-13 2024-03-31 13F CENTURY ALUM COM 156431108 24,709 0 0.00 380 27.09 0.0001
2024-02-09 2023-12-31 13F CENTURY ALUM COM 156431108 24,709 -1 -0.00 300 68.93 0.0001
2023-11-13 2023-09-30 13F CENTURY ALUM COM 156431108 24,710 -758 -2.98 178 -20.27 0.0001
2023-08-11 2023-06-30 13F CENTURY ALUM COM 156431108 25,468 25,468 222 0.0001
2017-11-13 2017-09-30 13F CENTURY ALUM COM 156431108 0 -476,900 -100.00 0 -100.00
2017-08-10 2017-06-30 13F CENTURY ALUM COM 156431108 476,900 -460,900 -49.15 7,430 -37.57 0.0037
2017-05-12 2017-03-31 13F CENTURY ALUM COM 156431108 937,800 -50,300 -5.09 11,901 40.71 0.0060
2017-02-14 2016-12-31 13F CENTURY ALUM COM 156431108 988,100 145,100 17.21 8,458 44.36 0.0044
2016-11-14 2016-09-30 13F CENTURY ALUM COM 156431108 843,000 0 0.00 5,859 9.80 0.0031
2016-08-11 2016-06-30 13F CENTURY ALUM COM 156431108 843,000 0 0.00 5,336 -10.21 0.0029
2016-05-10 2016-03-31 13F CENTURY ALUM COM 156431108 843,000 293,000 53.27 5,943 144.47 0.0032
2016-04-27 2015-12-31 13F/A-1 CENTURY ALUM COM 156431108 550,000 550,000 0.00 2,431 0.0012
2016-02-12 2015-12-31 13F CENTURY ALUM COM 156431108 550,000 2,431
2015-02-10 2014-12-31 13F CENTURY ALUM COM 156431108 0 -868,000 -100.00 0 -100.00
2014-11-12 2014-09-30 13F CENTURY ALUM COM 156431108 868,000 -1,337,000 -60.63 22,542 -34.80 0.0103
2014-08-12 2014-06-30 13F CENTURY ALUM COM 156431108 2,205,000 0 0.00 34,574 18.70 0.0152
2014-05-13 2014-03-31 13F CENTURY ALUM COM 156431108 2,205,000 0 0.00 29,128 26.29 0.0138
2014-02-12 2013-12-31 13F CENTURY ALUM COM 156431108 2,205,000 2,205,000 23,064 0.0113
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.