Dimensional Fund Advisors Lp ownership in CENX / Century Aluminum Company

Century Aluminum Company

US ˙ NasdaqGS ˙ US1564311082

Security	CENX / Century Aluminum Company
Institution	Dimensional Fund Advisors Lp
Latest Disclosed Ownership	3,822,654 shares
Ownership	4.20%

2022-02-08 - Dimensional Fund Advisors Lp has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 3,822,654 shares of Century Aluminum Company (US:CENX). This represents 4.2 percent ownership of the company. In their previous filing dated 2021-02-12 , Dimensional Fund Advisors Lp had reported owning 5,659,766 shares, indicating a decrease of -32.46 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File Date	Effective Date	Form	Prev Shares	Latest Shares	ΔShares (Percent)	Ownership (Percent)	ΔOwnership (Percent)
2022-02-08	2022-02-08	13G/A	5,659,766	3,822,654	-32.46	4.20	-33.33
2021-02-12	2021-02-12	13G/A	6,790,796	5,659,766	-16.66	6.30	-17.54
2020-02-12	2020-02-12	13G/A	7,356,065	6,790,796	-7.68	7.64	-8.94
2019-02-08	2019-02-08	13G/A	7,337,315	7,356,065	0.26	8.39	-0.12
2018-02-09	2018-02-09	13G/A	7,362,602	7,337,315	-0.34	8.40	-0.71
2017-02-09	2017-02-09	13G/A	6,535,950	7,362,602	12.65	8.46	12.50
2016-02-09	2016-02-09	13G/A		6,535,950		7.52
2015-02-05	2015-02-05	13G/A		7,227,667		8.13
2014-02-10	2014-02-10	13G/A		7,209,759		8.13
2013-02-11	2013-02-11	13G/A		5,874,192		6.64
2012-02-14	2012-02-14	13G/A		5,893,771		6.58

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-07	2026-03-31	13F	CENTURY ALUM	COM	156431108	2,190,922	-574,210	-20.77	128,552	18.66	0.0058
2026-02-12	2025-12-31	13F	CENTURY ALUM	COM	156431108	2,765,132	-296,102	-9.67	108,341	20.54	0.0227
2025-11-12	2025-09-30	13F	CENTURY ALUM	COM	156431108	3,061,234	-10,750	-0.35	89,878	62.36	0.0193
2025-08-12	2025-06-30	13F	CENTURY ALUM	COM	156431108	3,071,984	234,133	8.25	55,357	5.11	0.0128
2025-05-13	2025-03-31	13F	CENTURY ALUM	COM	156431108	2,837,851	-100,119	-3.41	52,668	-1.61	0.0131
2025-02-13	2024-12-31	13F	CENTURY ALUM	COM	156431108	2,937,970	28,557	0.98	53,531	13.37	0.0129
2024-11-07	2024-09-30	13F	CENTURY ALUM	COM	156431108	2,909,413	-38,179	-1.30	47,219	-4.35	0.0115
2024-08-09	2024-06-30	13F	CENTURY ALUM	COM	156431108	2,947,592	-267,040	-8.31	49,369	-0.21	0.0129
2024-05-10	2024-03-31	13F	CENTURY ALUM	COM	156431108	3,214,632	-28,941	-0.89	49,473	25.63	0.0134
2024-02-07	2023-12-31	13F	CENTURY ALUM	COM	156431108	3,243,573	42,167	1.32	39,380	71.10	0.0115
2023-11-09	2023-09-30	13F	CENTURY ALUM	COM	156431108	3,201,406	-424,510	-11.71	23,015	-27.21	0.0075
2023-08-09	2023-06-30	13F	CENTURY ALUM	COM	156431108	3,625,916	-280,022	-7.17	31,619	-19.05	0.0101
2023-05-12	2023-03-31	13F	CENTURY ALUM	COM	156431108	3,905,938	727,150	22.88	39,058	150,123.08	0.0132
2023-02-09	2022-12-31	13F	CENTURY ALUM	COM	156431108	3,178,788	34,068	1.08	26	-99.84	0.0077
2022-11-10	2022-09-30	13F	CENTURY ALUM	COM	156431108	3,144,720	-267,261	-7.83	16,611	-33.94	0.0064
2022-08-12	2022-06-30	13F	CENTURY ALUM	COM	156431108	3,411,981	36,549	1.08	25,145	-71.69	0.0090
2022-05-13	2022-03-31	13F	CENTURY ALUM	COM	156431108	3,375,432	-447,222	-11.70	88,810	40.30	0.0274
2022-02-09	2021-12-31	13F	CENTURY ALUM	COM	156431108	3,822,654	-196,854	-4.90	63,302	17.09	0.0191
2021-11-12	2021-09-30	13F	CENTURY ALUM	COM	156431108	4,019,508	-400,669	-9.06	54,062	-5.11	0.0174
2021-08-12	2021-06-30	13F	CENTURY ALUM	COM	156431108	4,420,177	-732,821	-14.22	56,975	-37.39	0.0180
2021-05-14	2021-03-31	13F	CENTURY ALUM	COM	156431108	5,152,998	-506,768	-8.95	91,000	45.77	0.0301
2021-03-08	2020-12-31	13F/A-2	CENTURY ALUM	COM	156431108	5,659,766	-438,922	-7.20	62,426	43.76	0.0225
2021-02-11	2020-12-31	13F	CENTURY ALUM	COM	156431108	5,659,766	-438,922		62,426		22,544.9531
2020-11-12	2020-09-30	13F	CENTURY ALUM	COM	156431108	6,098,688	131,789	2.21	43,423	2.07	0.0184
2020-08-13	2020-06-30	13F	CENTURY ALUM	COM	156431108	5,966,899	-522,144	-8.05	42,543	81.13	0.0187
2020-05-14	2020-03-31	13F	CENTURY ALUM	COM	156431108	6,489,043	-301,753	-4.44	23,488	-53.97	0.0122
2020-02-14	2019-12-31	13F	CENTURY ALUM	COM	156431108	6,790,796	-568,416	-7.72	51,032	4.51	0.0186
2019-11-12	2019-09-30	13F	CENTURY ALUM	COM	156431108	7,359,212	41,020	0.56	48,829	-3.44	0.0190
2019-08-13	2019-06-30	13F	CENTURY ALUM	COM	156431108	7,318,192	-116,636	-1.57	50,569	-23.40	0.0196
2019-08-12	2019-03-31	13F/A-2	CENTURY ALUM	COM	156431108	7,434,828	78,763	1.07	66,021	22.77	0.0263
2019-05-10	2019-03-31	13F	CENTURY ALUM	COM	156431108	7,434,828	78,763		66,021
2019-02-26	2018-12-31	13F/A-1	CENTURY ALUM	COM	156431108	7,356,065	-14,884	-0.20	53,774	-39.05	0.0244
2019-02-13	2018-12-31	13F	CENTURY ALUM	COM	156431108	7,356,065	-14,884		53,774
2018-11-13	2018-09-30	13F	CENTURY ALUM	COM	156431108	7,370,949	11,043	0.15	88,228	-23.89	0.0336
2018-08-10	2018-06-30	13F	CENTURY ALUM	COM	156431108	7,359,906	622,137	9.23	115,918	4.02	0.0462
2018-05-11	2018-03-31	13F	CENTURY ALUM	COM	156431108	6,737,769	-599,546	-8.17	111,443	-22.67	0.0464
2018-02-12	2017-12-31	13F	CENTURY ALUM	COM	156431108	7,337,315	54,992	0.76	144,106	19.35	0.0597
2017-11-13	2017-09-30	13F	CENTURY ALUM	COM	156431108	7,282,323	-65,501	-0.89	120,743	5.47	0.0528
2017-08-11	2017-06-30	13F	CENTURY ALUM	COM	156431108	7,347,824	-35,202	-0.48	114,481	22.19	0.0529
2017-05-12	2017-03-31	13F	CENTURY ALUM	COM	156431108	7,383,026	20,424	0.28	93,690	48.65	0.0448
2017-02-09	2016-12-31	13F	CENTURY ALUM	COM	156431108	7,362,602	14,747	0.20	63,026	23.42	0.0315
2016-11-10	2016-09-30	13F	CENTURY ALUM	COM	156431108	7,347,855	-44,143	-0.60	51,067	9.14	0.0276
2016-08-09	2016-06-30	13F	CENTURY ALUM	COM	156431108	7,391,998	-9,165	-0.12	46,790	-10.33	0.0269
2016-05-13	2016-03-31	13F	CENTURY ALUM	COM	156431108	7,401,163	865,213	13.24	52,179	80.61	0.0312
2016-02-10	2015-12-31	13F	CENTURY ALUM	COM	156431108	6,535,950	-570,203	-8.02	28,891	-11.62	0.0180
2015-11-13	2015-09-30	13F	CENTURY ALUM	COM	156431108	7,106,153	-142,080	-1.96	32,688	-56.76	0.0215
2015-08-14	2015-06-30	13F	CENTURY ALUM	COM	156431108	7,248,233	46,125	0.64	75,601	-23.94	0.0463
2015-05-14	2015-03-31	13F	CENTURY ALUM	COM	156431108	7,202,108	-25,559	-0.35	99,392	-43.64	0.0628
2015-02-06	2014-12-31	13F	CENTURY ALUM	COM	156431108	7,227,667	-150,745	-2.04	176,356	-7.96	0.1158
2014-11-13	2014-09-30	13F	CENTURY ALUM	COM	156431108	7,378,412	47,716	0.65	191,607	66.69	0.1358
2014-08-08	2014-06-30	13F	CENTURY ALUM	COM	156431108	7,330,696	170,908	2.39	114,945	21.53	0.0799
2014-05-14	2014-03-31	13F	CENTURY ALUM	COM	156431108	7,159,788	-49,971	-0.69	94,578	25.41	0.0707
2014-02-12	2013-12-31	13F	CENTURY ALUM	COM	156431108	7,209,759	136,205	1.93	75,413	32.44	0.0588
2013-11-13	2013-09-30	13F	CENTURY ALUM	COM	156431108	7,073,554	292,113	4.31	56,943	-9.52	0.0493
2013-08-15	2013-06-30	13F	CENTURY ALUM	COM	156431108	6,781,441	6,781,441		62,933		0.0593

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.