Century Aluminum Company CENX

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Century Aluminum Company - Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 46.2100 · FX 1 USD = 1.288650 SGD · about SGD 59.5485 per unit

Sign in to place simulated trades. 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 22.64 → 46.21 · 104.1%
68.77044.59020.410 1,2 3 4,5 6 7 8 9,10 11,12 13,14 15 Jul 25Oct 25Jan 26Apr 26Jul 26

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

Price & SEC Filing History 26 Jul 2025 — 27 Jul 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.

No data yet
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
15 · 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
14 · 10-Q After-hours · 16:10 ET 10-Q ↗ 13 · 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
12 · DEFA14A Pre-market · 09:00 ET SEC Form DEFA14A ↗ 11 · 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
10 · 10-K After-hours · 16:07 ET 10-K ↗ 9 · 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
8 · 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
7 · 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
6 · 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
5 · 10-Q After-hours · 16:21 ET 10-Q ↗ 4 · 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
29.7400 30.7900 28.6300 29.9400 3,327,500
30.4000 30.9300 28.2800 28.9600 3,304,000
3 · 8-K Next filing day · accepted 21 Oct, 17:35 ET FORM 8-K ↗
33.9100 33.9900 30.5500 30.9900 3,189,500
33.4500 34.5200 32.7800 34.2600 1,925,000
Weekend
Weekend
31.7000 32.6000 31.5400 32.4600 1,879,100
31.9400 32.6300 31.4500 32.4900 2,149,800
32.4600 32.9800 31.7600 31.9100 2,056,600
32.0800 32.6600 31.2200 32.0100 1,321,200
31.6100 33.2500 31.1600 32.9100 2,232,300
Weekend
Weekend
31.4300 31.4500 29.6300 30.2900 2,094,100
32.0500 32.4000 31.1500 31.3200 1,934,900
28.7100 31.6600 28.5700 31.6000 2,952,900
29.4600 31.0600 28.0100 28.0900 3,589,800
30.1200 30.7600 29.0400 29.1400 1,772,400
Weekend
Weekend
30.3000 30.4300 29.5100 29.8700 1,272,100
29.6800 30.3700 28.8100 29.8200 1,749,500
29.1600 30.1400 29.1200 29.4000 2,068,300
28.9700 29.5400 28.6700 29.3600 1,971,000
28.6500 30.0800 28.6000 29.4000 4,086,600
Weekend
Weekend
25.9400 28.4700 25.8400 27.9900 2,680,600
25.5200 26.4800 25.4800 25.9600 1,679,800
27.0900 27.2100 25.7200 25.8500 2,306,200
27.5500 28.0000 26.6200 26.8500 1,414,300
27.5000 27.5300 26.4700 27.3500 1,762,500
Weekend
Weekend
26.9400 28.4300 26.9000 27.5700 3,928,000
26.4200 26.9500 26.1800 26.9000 1,271,700
25.7600 26.8300 25.5500 26.4000 1,535,600
26.2200 26.5400 25.8200 26.0500 1,161,700
26.4500 26.8500 26.0000 26.0300 2,351,100
Weekend
Weekend
24.7400 26.1000 24.5800 26.0900 3,394,400
22.5100 24.5500 22.4300 24.5200 2,351,800
22.0600 23.0900 21.9600 22.3700 1,645,100
22.0200 22.6400 21.5600 21.7400 1,535,500
22.2700 22.4400 21.4800 21.7300 1,298,000
Weekend
Weekend
22.3100 22.5700 21.8400 22.0900 1,332,400
22.0300 22.1800 21.6900 22.0300 970,400
21.7100 22.3800 21.6300 22.1600 1,083,500
22.0000 22.0800 20.9100 21.6900 2,124,200
No trading
Weekend
Weekend
22.4300 22.6400 22.1800 22.3300 1,001,600
22.9000 23.0000 22.1000 22.3800 1,423,900
22.1500 22.7100 21.8100 22.7000 1,261,200
22.1900 22.6700 22.1600 22.4500 1,270,300
22.2700 22.6800 22.1400 22.2900 1,103,400
Weekend
Weekend
21.9900 22.7500 21.7200 22.2100 1,884,700
21.5500 22.1100 21.4600 21.9700 541,600
21.8100 21.9300 21.4200 21.8400 956,000
22.3000 22.6900 21.7000 21.9500 1,385,400
23.2000 23.3000 22.0500 22.3100 1,255,100
Weekend
Weekend
23.6500 23.7800 23.0900 23.2600 1,478,500
23.3600 23.8500 22.8400 23.5600 1,444,300
23.6100 24.0100 23.2900 23.8200 1,569,800
22.6500 23.5000 22.4700 23.4600 1,408,500
22.8400 22.9900 21.9500 22.4900 1,534,200
Weekend
Weekend
22.5700 24.9800 21.9100 23.0100 2,814,000
2 · 10-Q After-hours · 16:12 ET 10-Q ↗ 1 · 8-K After-hours · 16:07 ET 8-K ↗
21.7000 22.7000 21.4600 22.6400 1,688,300
21.5000 21.7900 21.1100 21.5000 1,248,500
20.5900 21.1900 20.3400 21.0600 1,206,400
20.5100 20.7600 20.2100 20.4100 1,374,100
Weekend
Weekend
20.5000 21.0700 20.2100 20.4700 1,645,100
20.8000 21.3200 20.5600 21.1800 2,067,900
22.2100 22.3500 20.9000 21.3200 1,790,100
22.6400 22.7100 22.1500 22.3300 1,191,200
23.0400 23.1000 22.0500 22.6400 1,431,600
Weekend
Weekend

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.

15 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:35 ET Summarise
14 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
12 DEFA14A SEC Form DEFA14A (opens SEC filing in a new tab) Pre-market · 09:00 ET Summarise
11 DEF 14A SEC Form DEF 14A (opens SEC filing in a new tab) Pre-market · 09:00 ET Summarise
10 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:46 ET Summarise
7 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:17 ET Summarise
6 8-K/A 8-K/A (opens SEC filing in a new tab) After-hours · 16:18 ET Summarise
5 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:21 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:13 ET Summarise
3 8-K FORM 8-K (opens SEC filing in a new tab) Next filing day · accepted 21 Oct, 17:35 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:12 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise