센추리 알루미늄 회사
DE ˙ DB ˙ US1564311082
€52.38 ↓ -5.88 (-10.09%)
2026-06-05
주가
SecurityDE:EY3 / Century Aluminum Company
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership139,499 shares
Latest Disclosed Value $ 8,187,196
Renaissance Technologies Llc reports 18.22% increase in ownership of EY3 / Century Aluminum Company

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 139,499 shares of Century Aluminum Company (DE:EY3) valued at $7,047,489 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 117,999 shares of Century Aluminum Company. This represents a change in shares of 18.22% during the quarter. The current value of the position is $7,306,958 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.

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)
2026-05-14 2026-03-31 13F CENTURY ALUM COM 156431108 139,499 21,500 18.22 8,187 77.09 0.0128
2026-02-12 2025-12-31 13F CENTURY ALUM COM 156431108 117,999 -247,100 -67.68 4,623 -56.87 0.0072
2025-11-13 2025-09-30 13F CENTURY ALUM COM 156431108 365,099 209,500 134.64 10,719 282.41 0.0142
2025-08-13 2025-06-30 13F CENTURY ALUM COM 156431108 155,599 155,599 2,804 0.0037
2025-05-14 2025-03-31 13F CENTURY ALUM COM 156431108 0 -229,699 -100.00 0 -100.00
2025-02-13 2024-12-31 13F CENTURY ALUM COM 156431108 229,699 -55,000 -19.32 4,185 -9.42 0.0062
2024-11-13 2024-09-30 13F CENTURY ALUM COM 156431108 284,699 25,400 9.80 4,621 6.38 0.0069
2024-08-09 2024-06-30 13F CENTURY ALUM COM 156431108 259,299 -59,800 -18.74 4,343 108,475.00 0.0074
2024-05-13 2024-03-31 13F CENTURY ALUM COM 156431108 319,099 -132,800 -29.39 5 -20.00 0.0077
2024-02-13 2023-12-31 13F CENTURY ALUM COM 156431108 451,899 -162,600 -26.46 5 25.00 0.0085
2023-11-14 2023-09-30 13F CENTURY ALUM COM 156431108 614,499 -145,100 -19.10 4 -33.33 0.0075
2023-08-11 2023-06-30 13F CENTURY ALUM COM 156431108 759,599 58,400 8.33 7 -14.29 0.0095
2023-05-12 2023-03-31 13F CENTURY ALUM COM 156431108 701,199 -336,300 -32.41 7 -12.50 0.0093
2023-02-13 2022-12-31 13F CENTURY ALUM COM 156431108 1,037,499 366,400 54.60 8 -99.77 0.0116
2022-11-14 2022-09-30 13F CENTURY ALUM COM 156431108 671,099 88,000 15.09 3,543 -17.55 0.0050
2022-08-12 2022-06-30 13F CENTURY ALUM COM 156431108 583,099 -86,100 -12.87 4,297 -75.59 0.0051
2022-05-13 2022-03-31 13F CENTURY ALUM COM 156431108 669,199 669,199 17,607 0.0207
2021-08-13 2021-06-30 13F CENTURY ALUM COM 156431108 0 -20,878 -100.00 0 -100.00
2021-05-13 2021-03-31 13F CENTURY ALUM COM 156431108 20,878 -285,754 -93.19 369 -89.09 0.0005
2021-02-10 2020-12-31 13F CENTURY ALUM COM 156431108 306,632 -193,422 -38.68 3,382 -5.00 0.0037
2020-11-13 2020-09-30 13F CENTURY ALUM COM 156431108 500,054 226,499 82.80 3,560 82.56 0.0036
2020-08-13 2020-06-30 13F CENTURY ALUM COM 156431108 273,555 273,555 -45.29 1,950 -45.22 0.0017
2020-05-14 2020-03-31 13F CENTURY ALUM COM 156431108 0 -304,999 -100.00 0 -100.00
2020-02-13 2019-12-31 13F CENTURY ALUM COM 156431108 304,999 304,999 2,292 0.0018
2019-11-13 2019-09-30 13F CENTURY ALUM COM 156431108 0 -62,000 -100.00 0 -100.00
2019-08-12 2019-06-30 13F CENTURY ALUM COM 156431108 62,000 -89,499 -59.08 428 -68.18 0.0004
2019-05-14 2019-03-31 13F CENTURY ALUM COM 156431108 151,499 151,499 144.35 1,345 214.25 0.0012
2019-02-12 2018-12-31 13F CENTURY ALUM COM 156431108 0 -12,300 -100.00 0 -100.00
2018-11-13 2018-09-30 13F CENTURY ALUM COM 156431108 12,300 -32,700 -72.67 147 -79.27 0.0002
2018-08-13 2018-06-30 13F/A-1 CENTURY ALUM COM 156431108 45,000 -118,999 -72.56 709 -65.93 0.0008
2017-05-12 2017-03-31 13F CENTURY ALUM COM 156431108 163,999 -67,267 -29.09 2,081 5.10 0.0029
2017-02-13 2016-12-31 13F CENTURY ALUM COM 156431108 231,266 -5,933 -2.50 1,980 20.07 0.0031
2016-11-14 2016-09-30 13F CENTURY ALUM COM 156431108 237,199 192,500 430.66 1,649 482.69 0.0029
2016-08-12 2016-06-30 13F CENTURY ALUM COM 156431108 44,699 -1,043,900 -95.89 283 -96.31 0.0005
2016-05-13 2016-03-31 13F CENTURY ALUM COM 156431108 1,088,599 859,900 376.00 7,675 659.15 0.0146
2016-02-11 2015-12-31 13F CENTURY ALUM COM 156431108 228,699 -339,522 -59.75 1,011 -61.32 0.0022
2015-11-12 2015-09-30 13F CENTURY ALUM COM 156431108 568,221 393,676 225.54 2,614 43.55 0.0062
2015-08-14 2015-06-30 13F CENTURY ALUM COM 156431108 174,545 174,545 -69.28 1,821 -30.34 0.0041
2015-02-13 2014-12-31 13F CENTURY ALUM COM 156431108 0 -266,499 -100.00 0 -100.00
2014-11-12 2014-09-30 13F CENTURY ALUM COM 156431108 266,499 266,499 6,921 0.0190
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.