Century Aluminum Company CENX

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Century Aluminum Company - Common Stock · Company · Nasdaq · Basic Materials / Aluminum

Paper trade (simulated — no real money)

Fill: USD 31.4200 · FX 1 USD = 1.277900 SGD · about SGD 40.1516 per unit

Sign in to practise with simulated trades before investing real money. USD fills are converted into the SGD portfolio at the displayed rate.

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 30.79 → 31.42 · 2.0%
68.77047.48026.190 1,2 3 4 5 6,7 8,9 10,11 12 13,14 Oct 25Jan 26Apr 26Jul 26Oct 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 24 Oct 2025 — 25 Oct 2026 (Last year)

Daily Nasdaq prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

Weekend
Weekend
32.4100 32.4900 31.2500 31.4200 2,370,739
33.1600 33.4500 32.1200 32.6500 2,674,700
33.6600 35.2100 33.2500 34.5200 3,324,700
33.6100 34.4300 33.2100 33.5000 2,091,300
35.5000 35.5500 34.0300 34.3600 1,596,700
Weekend
Weekend
34.6400 36.5900 34.5500 35.0300 2,253,700
32.7600 34.3000 32.3900 34.2000 3,363,400
32.9300 33.9400 32.6200 33.2200 2,134,400
34.6800 34.7300 33.4300 34.1600 1,801,900
36.5000 36.5000 34.7700 34.9600 1,458,400
Weekend
Weekend
36.9000 37.1900 36.1700 36.7600 990,300
35.8000 36.6700 35.5900 36.3800 1,823,300
36.1700 36.2100 35.5200 36.0300 2,675,000
37.1800 37.4400 36.6200 37.1800 1,633,100
35.7100 37.4500 35.6600 36.9400 1,863,500
Weekend
Weekend
36.0000 36.5600 35.4400 35.6200 1,987,500
35.4700 36.0700 35.0400 35.9900 2,190,700
36.4500 37.0200 35.7200 35.9800 2,020,900
37.4700 37.5000 35.7900 36.2000 2,649,200
38.2100 38.2600 36.9700 37.4000 2,582,900
Weekend
Weekend
38.2600 38.8500 37.9100 38.3900 869,700
38.1500 38.4600 37.6100 38.1200 1,213,800
38.8900 39.4800 38.2700 38.8200 1,099,400
39.6300 40.1000 38.7700 39.4000 1,252,800
39.5000 39.7600 38.9700 39.1000 1,183,000
Weekend
Weekend
41.2300 41.4500 38.8900 39.0100 4,154,900
40.6900 41.2300 40.3300 40.7500 1,474,500
40.3100 40.9800 39.2600 39.8000 1,711,200
41.9900 42.0900 39.5200 39.7100 1,979,600
43.0000 43.1000 41.3200 41.5400 1,624,000
Weekend
Weekend
44.9400 45.4800 43.2800 44.0500 1,222,100
45.8400 46.8900 43.9800 44.3600 2,293,100
48.9800 49.7700 47.0500 47.6900 1,322,500
48.2400 49.7700 47.8400 47.9500 1,388,300
No trading
Weekend
Weekend
46.7700 47.3900 46.2800 46.7800 1,071,600
48.6500 48.8700 47.0200 47.5100 1,217,200
47.4200 48.1700 46.9200 47.2800 1,490,400
44.8500 48.0400 44.7400 46.7800 1,915,300
47.0000 47.3800 45.2800 45.7700 1,261,200
Weekend
Weekend
46.2600 46.9700 45.5200 46.5900 1,766,100
43.9600 46.1500 43.7300 45.8900 1,407,200
44.2000 44.5400 43.7100 43.9500 1,284,700
43.6000 44.8500 43.4300 44.2000 1,161,000
45.2200 46.4400 43.3300 43.6600 1,888,400
Weekend
Weekend
44.9100 45.4700 43.1100 43.9200 1,772,700
42.8500 43.8500 41.8600 43.4000 2,196,500
46.8000 47.6900 40.5600 43.5800 5,830,000
46.2400 46.6100 44.3600 45.6600 2,143,400
47.3000 47.8300 45.8900 47.1200 1,496,200
Weekend
Weekend
46.4000 47.8700 46.4000 46.7200 1,098,100
47.6000 49.4300 46.2800 46.3900 2,209,800
52.8400 53.4200 48.1400 48.1700 3,154,800
54.1800 55.5500 52.1200 52.2900 2,409,800
51.8900 53.6200 51.5000 51.8800 2,243,200
Weekend
Weekend
47.8500 52.7400 47.5600 51.2300 3,739,800
14 · 10-Q After-hours · 16:11 ET 10-Q ↗ 13 · 8-K After-hours · 16:09 ET 8-K ↗
46.6700 48.7900 45.3200 45.9500 3,995,400
47.8600 48.9600 46.3800 46.9000 2,662,900
47.0000 47.6300 46.1500 47.1200 1,402,000
43.5200 45.2300 43.1500 45.2000 1,310,600
Weekend
Weekend
45.0800 45.3300 43.8900 44.7700 1,928,000
44.2500 45.0300 43.8300 44.8800 1,450,500
45.2200 45.5800 41.9500 42.6600 1,692,400
44.8100 44.8300 43.5600 43.9600 1,283,100
45.6400 45.9900 44.2600 44.8700 1,206,100
Weekend
Weekend
46.9100 47.3300 45.5100 46.2100 1,534,800
45.6500 46.7100 45.1500 46.3600 1,253,100
44.8000 46.1900 44.5400 45.3300 2,074,200
44.9500 45.9900 44.0000 44.8000 2,482,800
41.6800 42.9600 40.4000 42.8400 2,623,700
Weekend
Weekend
41.4300 42.6800 40.7600 41.5000 1,495,100
43.0700 43.2600 41.8600 42.6000 2,066,200
45.7800 45.9300 42.9800 43.9400 1,749,300
46.2300 47.3500 45.3800 46.0800 1,283,900
44.4400 46.0000 44.0000 45.4100 1,815,100
Weekend
Weekend
44.9400 45.4400 44.0500 44.6700 1,527,800
44.9300 45.4100 43.8200 45.1100 1,404,900
43.9600 45.7200 43.2600 44.7300 1,513,100
45.9300 45.9700 44.2500 45.2800 2,229,800
45.1400 47.0000 44.7800 46.6800 2,170,400
Weekend
Weekend
No trading
43.6000 45.3600 43.1400 43.7600 2,153,100
44.4800 45.2200 42.6200 43.0300 3,515,400
47.3200 47.5000 45.7400 46.0100 1,752,400
46.1200 47.3300 45.1000 46.5500 2,156,600
Weekend
Weekend
45.0000 47.3600 45.0000 46.3300 6,377,200
44.8500 46.0600 43.2900 45.9600 2,506,900
45.6400 46.2100 43.7900 44.5000 2,378,800
47.4400 47.9800 46.6800 47.3300 3,566,000
50.9200 51.0500 48.1000 49.5300 3,154,200
Weekend
Weekend
No trading
54.6800 54.7000 51.1800 51.7100 3,754,000
12 · 8-K After-hours · 16:35 ET 8-K ↗
53.0100 56.6700 53.0000 54.3100 2,566,100
54.5000 54.5200 52.0600 53.5500 3,069,500
58.5500 58.7900 53.5200 54.5500 3,664,100
Weekend
Weekend
60.9200 61.9500 59.6300 61.1900 1,285,600
61.0000 61.7100 58.9400 60.9400 1,277,700
59.7300 61.3700 58.5000 59.0400 1,941,300
64.4600 64.4600 58.5100 60.9100 1,508,600
62.7600 64.7500 61.5000 63.3000 2,503,700
Weekend
Weekend
65.0000 65.2000 59.9800 60.1200 2,195,100
65.9700 69.2000 65.0100 66.4300 1,344,000
67.6100 69.2900 66.4500 67.0400 1,784,100
64.8800 70.4300 64.8800 68.7700 2,776,000
66.7100 66.7100 63.4100 63.9100 1,946,500
Weekend
Weekend
68.3700 68.8000 63.7800 65.9700 2,871,900
65.1500 68.7000 64.5300 67.5300 2,042,100
62.2900 65.8700 61.5000 65.7200 1,630,000
66.2400 67.8200 65.7200 66.8800 1,592,800
No trading
Weekend
Weekend
60.3600 65.3700 59.9500 65.0500 2,037,500
58.8000 61.5600 58.0800 60.4600 1,546,900
59.9800 60.0900 58.1500 58.7800 1,362,500
54.0000 59.1000 53.7000 58.4400 1,665,000
57.2200 58.2000 54.5100 54.9200 1,808,500
Weekend
Weekend
58.8800 59.8300 55.8600 56.8200 1,633,600
64.4700 65.0000 60.7100 61.4400 1,488,000
64.6300 65.3400 61.6500 64.3400 2,751,700
58.8400 63.9000 58.1800 63.2700 1,779,000
58.9800 61.3800 57.8400 60.1800 1,678,700
Weekend
Weekend
61.9900 62.9000 57.1200 58.9100 2,514,900
11 · 10-Q After-hours · 16:10 ET 10-Q ↗ 10 · 8-K After-hours · 16:06 ET 8-K ↗
63.6000 63.7400 59.8400 60.5800 1,425,600
62.3100 63.1900 60.6600 62.6200 2,016,900
60.6300 63.4200 60.6300 62.2800 1,521,400
60.2100 60.9000 58.4500 59.7900 1,185,600
Weekend
Weekend
58.7100 59.4300 57.6400 58.9800 798,700
59.2100 60.0000 58.2100 59.4400 769,200
60.0400 60.0400 58.2000 58.9800 968,800
61.5100 61.5100 59.1000 59.3100 894,700
60.9300 61.8700 60.0000 61.6300 888,900
Weekend
Weekend
59.8700 61.1100 58.5400 60.7400 1,118,800
9 · DEFA14A Pre-market · 09:00 ET SEC Form DEFA14A ↗ 8 · DEF 14A Pre-market · 09:00 ET SEC Form DEF 14A ↗
62.9000 63.4600 59.4700 59.8700 1,429,100
62.1600 63.2000 60.6500 63.0900 872,200
61.4900 62.3500 59.8900 61.4000 1,219,600
62.3200 62.9900 60.1400 61.3300 1,168,700
Weekend
Weekend
59.7100 62.9900 57.4800 62.2400 2,738,500
64.1700 66.4800 64.1700 65.6100 1,074,400
63.6600 65.1400 63.1800 64.0900 1,187,100
68.3000 68.6800 63.0000 63.7700 2,105,300
66.9600 68.5200 66.2900 67.9400 1,529,100
Weekend
Weekend
66.7000 68.2200 66.3000 66.9600 924,900
66.0000 68.6900 65.6000 66.3100 1,566,600
62.8700 66.4400 61.1300 65.5700 2,551,600
65.7300 67.6300 65.2500 66.0300 2,659,000
62.6000 64.8500 61.9600 64.5400 1,895,500
Weekend
Weekend
No trading
61.5200 64.2000 61.5200 62.5700 1,967,500
59.7700 63.6900 59.3000 63.5100 3,060,700
55.3500 60.5400 55.2500 58.6900 4,320,600
56.3900 59.8400 51.8900 53.2500 4,645,800
Weekend
Weekend
48.4000 51.1300 47.6200 49.6500 1,770,300
48.8700 49.9300 48.1400 48.4000 1,483,500
51.1400 51.3800 49.9700 50.1900 1,059,500
46.4900 51.3500 46.3500 50.2300 2,561,200
49.5700 51.9800 46.4000 46.4800 3,590,000
Weekend
Weekend
49.4000 51.4400 48.1600 48.9700 3,647,500
50.5200 50.9200 48.2500 49.6500 3,162,700
55.6800 56.5700 52.8900 55.3400 1,974,800
56.0000 59.0900 55.7700 56.4900 2,269,400
55.0000 56.8300 53.8900 55.6500 2,169,900
Weekend
Weekend
57.8600 59.1200 53.8600 54.7300 2,295,600
57.6100 59.1200 56.0100 57.7100 2,705,800
53.1100 58.1000 52.5200 58.0700 2,491,100
54.2100 55.0500 53.2000 53.5600 2,344,100
52.0700 55.3800 51.4300 54.4500 2,337,700
Weekend
Weekend
51.9900 54.8300 51.1000 53.6900 2,692,000
51.9000 54.9200 51.3000 53.9000 2,716,900
55.0000 56.9600 53.1300 53.4300 3,162,100
7 · 10-K After-hours · 16:07 ET 10-K ↗ 6 · 8-K After-hours · 16:05 ET 8-K ↗
49.9000 53.7100 48.0800 52.9200 3,012,500
52.5000 53.9600 50.9700 51.3600 1,552,100
Weekend
Weekend
51.5700 52.5000 50.5600 51.5600 2,368,300
51.4700 52.4800 50.2500 52.2100 2,246,800
54.8200 55.9900 52.7700 53.0200 2,663,100
51.8400 55.5000 50.9500 53.5100 2,419,900
52.5600 53.1800 49.8400 51.8400 2,456,600
Weekend
Weekend
52.5000 55.6100 50.5700 52.6400 3,178,200
5 · 8-K After-hours · 16:46 ET 8-K ↗
48.8800 52.8300 48.3600 52.5000 3,853,400
49.3900 51.2700 49.0000 50.2200 2,705,800
45.1200 49.3200 44.0800 48.8900 3,098,800
No trading
Weekend
Weekend
45.6000 47.3300 43.1100 46.0400 5,094,400
53.6300 54.0000 49.5500 49.7000 1,645,500
54.6500 54.8200 51.4500 53.4400 1,345,700
53.7000 54.0600 51.7900 51.9600 1,819,600
52.4500 55.5900 52.1500 54.3600 2,759,200
Weekend
Weekend
49.3400 52.7800 48.5800 52.4000 2,736,800
45.7600 48.0000 45.2500 46.8700 2,011,700
50.9500 51.8500 45.9400 47.5300 2,304,900
50.9000 51.8400 48.1000 50.5100 2,479,600
4 · 8-K After-hours · 16:17 ET FORM 8-K ↗
45.0000 48.0500 45.0000 47.3200 1,974,500
Weekend
Weekend
46.5000 47.9300 44.4100 45.3300 3,506,900
51.4100 52.0000 48.0300 48.9300 2,333,500
48.9000 50.0000 48.0300 49.0000 1,677,400
45.4400 47.9400 44.7800 47.8200 1,717,600
48.7900 48.8500 44.6200 45.1100 3,587,500
Weekend
Weekend
48.4400 49.1300 46.6400 48.7100 2,029,700
48.4000 49.3900 47.8700 48.3000 1,591,700
49.4700 50.1600 46.5100 47.7500 2,452,000
46.0200 48.1100 46.0000 47.8700 1,378,400
No trading
Weekend
Weekend
47.6000 48.1800 45.7200 47.5700 2,218,800
47.7000 49.6700 47.3000 48.4900 2,333,700
46.8400 48.5800 46.2800 47.9200 1,991,100
47.8000 48.0600 46.2600 46.3400 2,066,000
46.2800 47.6400 45.3500 47.0100 2,444,600
Weekend
Weekend
43.5100 45.7400 43.2100 45.6900 1,690,300
41.2200 43.4400 40.6000 43.2400 1,991,700
41.2300 42.9500 39.9800 42.8500 2,223,900
43.8200 45.5800 42.1000 42.2300 4,182,700
42.1600 44.3400 41.4000 43.8300 2,743,900
Weekend
Weekend
39.9600 41.5000 39.5600 40.9400 1,337,900
No trading
39.4900 39.5200 38.5300 39.1800 1,134,300
39.6600 40.8300 39.2200 39.6900 1,595,800
38.6200 39.3000 37.7400 39.0400 1,470,800
Weekend
Weekend
40.1500 40.2600 39.4600 40.1800 1,106,700
No trading
38.5900 39.4000 38.4200 39.3100 1,055,700
38.0200 39.7800 37.2100 38.9700 2,405,000
37.0000 37.4500 36.3200 37.1900 1,664,500
Weekend
Weekend
34.0800 37.0500 33.9000 36.2100 3,882,700
32.1000 33.8700 31.7100 33.8100 1,818,600
32.6400 32.9600 31.7400 32.1200 1,236,800
31.2200 32.5300 31.2000 32.2200 1,553,400
32.0100 32.1400 31.1700 31.3900 1,443,100
Weekend
Weekend
32.6700 33.0600 31.3000 31.5600 1,605,900
30.2300 32.4700 30.2300 32.3200 3,889,400
30.3600 30.6400 29.3000 30.2900 1,574,500
30.0200 31.1800 29.7000 30.3200 1,089,100
31.3000 31.3500 30.3000 30.6100 1,834,200
Weekend
Weekend
31.4300 32.1300 30.9400 31.0800 1,596,400
30.2800 31.4000 30.1400 30.8600 1,351,400
30.0000 31.3400 29.8900 30.9400 3,089,700
29.5500 29.9400 29.3000 29.6800 780,300
29.8600 30.1900 29.1800 29.5500 1,502,300
Weekend
Weekend
29.0200 29.9800 28.7800 29.9700 1,289,200
No trading
28.7800 29.0000 28.3500 28.7500 1,424,900
27.9500 28.7900 27.8000 28.4800 1,318,600
27.2200 28.1000 27.0100 27.8100 2,614,700
Weekend
Weekend
3 · 8-K/A After-hours · 16:18 ET 8-K/A ↗
25.8200 27.0500 25.4000 27.0100 2,501,300
28.3500 28.9400 26.0100 26.1900 2,941,200
27.6300 28.2300 27.3000 27.9400 2,047,200
27.3300 28.6900 26.9000 27.2100 2,190,700
28.7100 29.1200 27.7200 28.0400 1,647,700
Weekend
Weekend
27.9400 29.0400 27.6000 28.7800 1,815,900
30.2200 30.3000 28.7700 29.0400 3,097,800
28.2800 30.4000 28.1500 29.5700 5,694,500
29.8700 29.8800 26.9700 27.8800 10,146,300
33.5000 33.7100 31.3700 32.3100 2,208,200
Weekend
Weekend
28.0000 34.2300 27.8000 33.0500 4,053,000
2 · 10-Q After-hours · 16:21 ET 10-Q ↗ 1 · 8-K After-hours · 16:13 ET 8-K ↗
28.8400 29.6900 28.3100 28.9800 1,845,900
28.9500 29.0500 28.3000 28.6500 1,578,700
29.3300 29.7700 28.2800 28.5000 1,732,300
29.6400 31.1500 29.3500 30.7300 1,915,000
Weekend
Weekend
29.6400 29.8900 29.1600 29.6200 1,243,500
29.2100 30.5600 28.7600 29.6400 2,365,300
29.7900 30.3500 28.4100 28.7100 1,803,600
30.1500 30.6000 29.2700 29.3400 1,636,400
30.9000 31.5900 30.3700 30.7000 1,610,400
Weekend
Weekend
30.8000 32.5400 30.6800 30.7900 3,114,600

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

14 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:09 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
11 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
9 DEFA14A SEC Form DEFA14A (opens SEC filing in a new tab) Pre-market · 09:00 ET Summarise
8 DEF 14A SEC Form DEF 14A (opens SEC filing in a new tab) Pre-market · 09:00 ET Summarise
7 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:46 ET Summarise
4 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
3 8-K/A 8-K/A (opens SEC filing in a new tab) After-hours · 16:18 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:21 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:13 ET Summarise