Alliant Energy Corporation LNT

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Alliant Energy Corporation - Common Stock · Company · Nasdaq · Utilities / Utilities - Regulated Electric

Paper trade (simulated — no real money)

Fill: USD 69.6600 · FX 1 USD = 1.277900 SGD · about SGD 89.0185 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 68.97 → 69.66 · 1.0%
78.03070.62063.210 1,2 3 4 5 6,7 8 9,10 11,12 13,14 15 16,17 18 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
70.0900 70.3300 69.4450 69.6600 2,927,189
68.6000 70.4600 68.5100 70.3000 3,074,500
68.6400 68.7900 68.3400 68.3900 2,645,500
67.2600 68.4100 67.1400 68.2700 2,135,000
68.1800 68.2300 66.5700 66.8500 2,531,800
Weekend
Weekend
67.5000 68.4300 67.0400 68.3200 2,577,200
68.3800 68.4400 67.0000 67.1000 2,668,400
67.0500 67.5900 66.5500 67.5100 2,397,300
67.0100 67.1000 65.6500 66.9600 1,948,400
65.9000 66.5100 65.5400 66.4600 2,842,800
Weekend
Weekend
65.6700 65.9900 65.2800 65.8500 2,268,600
65.3100 65.7000 64.8600 65.5000 2,651,800
65.4000 65.6700 65.1000 65.2100 2,128,900
64.6700 65.5400 64.4400 65.4900 2,738,100
64.1800 64.8000 63.9700 64.2900 2,983,600
Weekend
Weekend
63.7900 65.2000 63.7900 64.3300 5,260,100
63.3000 63.9300 62.5400 63.7100 3,380,600
64.5400 64.6500 63.1800 63.3000 4,636,900
62.8100 64.4700 62.7700 64.3400 3,890,400
63.4400 63.8100 62.7800 63.2100 4,040,400
Weekend
Weekend
63.2600 63.6500 62.7000 63.6000 2,704,900
63.8500 64.0000 63.2700 63.3100 2,447,200
64.6600 64.6600 63.5600 63.6900 2,952,300
64.9800 65.3300 64.5700 64.6200 2,211,000
65.6200 65.7000 64.7600 64.9700 3,064,300
Weekend
Weekend
66.5000 66.5000 65.5600 65.6100 3,936,400
66.2300 66.7500 66.0500 66.6400 2,221,700
66.3200 66.7300 65.8000 66.1100 1,908,400
67.0500 67.1300 65.9100 65.9900 1,468,500
67.3000 67.7100 66.7400 66.9200 1,836,800
Weekend
Weekend
67.8000 67.8000 67.0300 67.2600 1,950,300
67.8900 68.4300 67.1600 67.2500 1,863,100
68.6000 68.9700 67.4200 67.8600 1,821,600
67.8600 69.0400 67.8600 68.6100 2,045,300
No trading
Weekend
Weekend
67.5700 68.5400 67.4400 67.9700 1,849,800
67.9300 68.4400 67.6700 68.0000 2,345,900
67.8800 68.1200 67.2200 67.7400 2,293,100
67.9800 68.5800 67.5500 67.9200 2,843,600
67.6100 68.3300 67.3800 67.9800 2,360,300
Weekend
Weekend
68.5900 68.7300 67.7300 68.0300 2,048,700
68.3100 68.5100 67.9000 68.2100 1,508,200
68.3400 69.1900 68.1700 68.9200 1,706,800
68.5000 68.6800 68.1400 68.3400 1,381,100
68.0100 68.5000 67.6800 68.4200 1,823,200
Weekend
Weekend
69.7600 70.5100 67.8100 67.8600 1,956,200
18 · 8-K Pre-market · 08:45 ET 8-K ↗
69.8000 70.5900 69.4300 69.4600 1,765,400
70.4800 70.6400 69.8400 70.1500 1,936,100
71.2500 71.4600 69.9500 69.9800 2,018,100
70.1500 70.4400 69.7700 70.3500 2,058,000
Weekend
Weekend
70.0100 70.7700 69.9900 70.6000 1,610,200
70.4600 70.7700 70.1500 70.2000 3,255,600
68.9500 70.4600 68.8100 70.2400 5,651,600
68.0600 68.7700 67.5400 68.5800 2,915,600
69.5500 69.5500 67.9400 68.2100 2,749,800
Weekend
Weekend
69.4100 69.8600 68.8900 69.3700 2,152,100
71.0500 71.0500 69.0600 69.5200 2,000,300
70.6300 70.6300 69.3800 70.2000 2,560,600
71.0500 71.2100 70.2300 70.6600 3,365,000
70.7100 71.6300 70.1400 71.2700 3,303,500
Weekend
Weekend
17 · 10-Q After market open · 11:22 ET 10-Q ↗
70.4600 71.1400 69.9200 70.7800 3,240,100
16 · 8-K Next filing day · accepted 30 Jul, 18:02 ET 8-K ↗
72.1700 72.2900 70.6900 70.8900 3,165,400
74.1200 74.3100 71.7000 72.0000 3,418,900
74.8500 75.3100 73.7900 73.7900 2,099,000
74.6400 75.1700 73.7300 73.9300 2,139,700
Weekend
Weekend
74.7700 75.4400 74.6300 74.9400 1,957,500
73.5100 74.8000 73.5000 74.4200 1,784,600
73.8800 74.3400 73.4100 74.0200 2,126,600
73.9600 74.0900 72.3600 73.1100 3,618,300
75.0100 75.6900 73.8400 73.9600 2,193,000
Weekend
Weekend
76.9600 77.1100 74.6300 74.8200 2,019,700
74.8900 75.8900 74.5900 75.7500 3,071,800
76.0400 76.2600 74.4400 74.5500 3,171,500
77.0600 77.4500 76.1800 76.3100 1,795,700
76.6100 77.3000 76.3800 76.6300 2,279,300
Weekend
Weekend
75.7300 76.6200 75.7000 76.4000 1,680,600
76.3700 76.8000 75.5700 75.7000 1,371,800
77.7400 77.8000 76.2000 76.3700 2,857,100
77.3600 78.8100 76.7300 77.6500 1,994,100
77.8400 77.9900 76.3900 76.5800 2,250,200
Weekend
Weekend
No trading
76.2300 78.2100 76.0300 78.0300 2,563,200
76.0000 76.2400 75.5300 75.7900 2,220,700
77.0100 77.1300 76.1500 76.2900 2,388,700
77.1700 77.3500 76.6800 77.1800 2,427,700
Weekend
Weekend
76.5300 77.3600 76.3300 77.2500 2,920,500
75.8200 76.6000 75.3300 76.1900 2,744,600
74.9900 75.6900 74.5200 75.5900 2,496,400
73.6500 74.6600 73.1500 74.5700 3,222,600
72.9300 74.0000 72.8100 73.2100 2,712,000
Weekend
Weekend
No trading
73.6200 73.7100 72.5300 73.0000 4,271,600
73.3100 73.9100 72.6100 72.8200 3,351,500
73.7400 74.5600 73.5000 73.8400 2,427,400
72.8400 73.7400 72.2400 73.5500 1,551,700
Weekend
Weekend
72.8300 73.4200 72.7800 73.1100 1,553,700
73.2800 73.7400 72.5400 72.6200 2,283,700
72.9300 73.6200 72.5300 73.0000 2,945,000
71.6900 72.8100 71.3600 72.3700 2,687,400
72.6300 73.1400 71.6200 71.7100 2,889,300
Weekend
Weekend
71.5600 73.2400 71.5500 72.8700 2,776,100
71.5000 71.6700 70.2900 71.3900 1,720,900
71.0700 72.2000 70.7600 70.7900 3,063,300
69.9000 71.3700 69.7600 70.9600 2,432,100
70.9000 71.0800 69.5600 69.5700 2,198,200
Weekend
Weekend
72.1700 72.2800 71.3900 71.6100 3,001,700
73.7500 73.8600 71.9100 72.1700 2,260,100
73.5100 74.0000 73.1100 73.7500 2,127,400
74.2300 74.6700 73.4400 73.6800 1,439,900
No trading
Weekend
Weekend
73.2800 74.0700 73.0500 73.9500 1,950,600
15 · 8-K After-hours · 17:05 ET 8-K ↗
72.3400 73.5700 72.3100 73.2800 2,988,900
73.2300 73.5700 72.4300 72.5000 2,729,400
72.0000 73.1300 71.7100 73.0000 2,832,300
71.4800 72.1500 71.2000 72.0900 2,114,200
Weekend
Weekend
72.4500 72.4500 70.8900 70.9000 2,627,000
72.5200 72.8500 72.0900 72.4500 1,558,000
72.0600 72.7300 71.6900 72.3000 2,590,400
72.5000 72.9400 71.7200 72.5900 3,458,900
72.1400 72.7600 72.0600 72.4700 1,671,700
Weekend
Weekend
71.9800 72.2700 71.4600 71.7600 2,582,600
72.0400 72.2600 71.4800 71.6900 2,914,700
73.0700 73.5200 72.1100 72.3100 2,933,000
73.5700 73.9100 72.8100 73.0700 3,416,800
73.4100 74.1600 72.6900 73.6800 3,435,000
Weekend
Weekend
14 · 10-Q After market open · 11:07 ET 10-Q ↗
73.4300 75.7600 72.5900 74.0600 4,344,300
13 · 8-K Next filing day · accepted 30 Apr, 18:23 ET 8-K ↗
71.5200 73.7100 71.5200 73.4300 3,934,800
72.4600 72.5900 71.6900 72.0000 1,775,700
72.6700 73.2000 72.2700 72.4600 1,726,300
72.3100 72.8700 72.2000 72.4200 1,412,500
Weekend
Weekend
72.3700 72.7900 71.9800 72.3100 2,065,400
71.5500 72.8600 71.4500 72.6300 2,097,000
71.6000 72.0200 70.6100 70.9600 1,852,200
72.5500 73.2700 71.1000 71.1400 1,904,900
72.7000 73.3200 72.2700 72.4000 1,722,400
Weekend
Weekend
72.4700 72.9200 71.7300 72.8300 1,784,600
71.9300 72.8300 71.8900 72.7700 2,130,200
71.9900 72.3800 71.3700 72.1800 2,083,000
72.5100 72.5200 71.6500 72.3000 1,501,200
73.1400 73.3500 71.9800 72.5100 1,822,700
Weekend
Weekend
73.4000 73.7800 72.8700 73.1000 2,036,100
72.9900 74.4000 72.9300 73.7200 1,730,800
72.2600 73.0000 71.5600 72.9900 1,537,400
72.1000 73.1400 72.1000 72.6500 1,537,900
72.5000 72.9900 72.3400 72.4500 1,345,700
Weekend
Weekend
No trading
72.1400 72.9900 71.8900 72.8500 1,668,400
71.3600 72.3500 71.3200 71.9400 1,823,000
71.5500 71.8400 70.5600 71.7600 2,376,500
12 · DEFA14A Next filing day · accepted 30 Mar, 18:03 ET DEFA14A ↗ 11 · DEF 14A Next filing day · accepted 30 Mar, 18:02 ET DEF 14A ↗
71.5100 71.8100 71.1000 71.4900 1,781,400
Weekend
Weekend
70.3400 71.2500 70.0500 70.5200 2,057,300
69.7700 70.4800 69.6300 70.2600 1,342,300
70.0000 70.3800 69.4900 69.7700 1,333,900
68.9300 70.4500 68.8600 69.6600 1,680,800
69.9000 69.9000 68.7100 69.1700 3,150,500
Weekend
Weekend
71.0400 71.5600 68.1100 68.7100 4,456,700
10 · 8-K After-hours · 17:28 ET 8-K ↗ 9 · 424B5 After-hours · 17:27 ET 424B5 ↗
71.7800 72.2300 70.6000 71.3200 1,962,400
72.2700 72.3500 71.7200 71.7600 1,802,700
73.3400 73.3600 72.4700 72.6300 1,368,500
73.4100 73.4100 72.7100 73.0300 1,704,500
Weekend
Weekend
72.3100 72.9600 72.1400 72.7900 1,680,200
70.5900 72.3700 70.5900 71.5700 2,503,800
71.1900 71.6200 70.6200 70.8100 2,271,200
71.2300 71.8700 70.9000 71.0400 2,150,100
71.5500 71.7500 70.6700 71.6100 2,144,200
Weekend
Weekend
71.0500 71.7700 70.8000 71.5500 2,213,200
71.7600 72.1900 70.9200 71.3400 2,672,100
72.0300 72.4300 71.3700 72.3000 1,858,100
8 · 8-K Next filing day · accepted 03 Mar, 20:13 ET 8-K ↗
71.5100 72.6500 70.8000 72.2300 2,795,900
72.1000 72.6300 71.8700 72.3300 2,980,100
Weekend
Weekend
71.6600 72.4000 71.4300 72.3400 5,649,800
71.5500 71.8800 71.0000 71.4500 7,931,100
71.8500 72.2400 70.3700 71.2600 3,107,100
71.9500 72.1000 70.6700 71.6300 2,911,200
71.3800 72.2000 71.2300 71.9100 3,943,200
Weekend
Weekend
7 · 10-K After market open · 14:58 ET 10-K ↗
71.4200 71.6400 70.0000 71.0100 4,015,100
6 · 8-K Next filing day · accepted 19 Feb, 18:22 ET 8-K ↗
69.7900 70.5500 69.7500 70.0100 3,342,400
71.1000 71.3200 69.5000 69.5300 2,799,400
71.8300 72.2600 70.9700 71.1000 2,725,600
No trading
Weekend
Weekend
69.6600 71.3800 69.6600 71.1900 2,761,800
68.6900 70.2600 68.6400 69.6800 3,093,300
68.0300 68.4800 67.6800 68.2300 1,642,800
67.1500 68.6100 66.8900 68.0100 2,497,600
66.5300 66.9800 66.1500 66.9000 1,707,400
Weekend
Weekend
67.5300 67.5300 66.0800 66.6900 4,807,300
67.2000 67.5600 66.5500 66.8300 3,232,800
66.9200 67.3200 66.5800 66.7500 3,706,500
65.1200 66.5700 65.1200 66.5300 3,097,700
65.9100 66.2300 64.9300 65.1100 2,975,700
Weekend
Weekend
65.6800 65.9500 65.2000 65.9100 2,678,400
66.2600 66.9400 65.7300 66.3300 4,587,000
67.1900 67.5000 66.1800 66.2600 3,204,300
66.8700 67.5900 66.8000 67.1900 1,859,700
66.8500 67.5700 66.6900 67.0100 1,842,200
Weekend
Weekend
66.7500 66.8600 65.8700 66.8300 2,395,400
67.4100 67.6600 66.5400 66.8700 1,869,700
67.7400 67.8000 66.8400 67.4400 2,837,800
67.5400 67.5400 66.6700 67.2800 1,902,400
No trading
Weekend
Weekend
66.7700 67.6300 66.5400 67.3400 2,083,800
67.0500 67.3300 66.6300 67.0600 2,146,800
66.1700 67.0200 66.1700 66.8600 1,962,300
65.8100 66.3300 65.2400 66.1700 2,570,500
65.0200 65.4500 64.8000 65.1700 1,783,900
Weekend
Weekend
65.3700 66.0900 65.0000 65.0200 2,049,800
5 · 8-K After-hours · 16:15 ET 8-K ↗
64.6300 65.5600 64.6000 65.5500 2,534,000
65.5000 65.5800 64.3400 64.6000 2,596,700
64.9000 65.4700 64.7500 65.3800 1,595,200
65.2500 65.4700 63.8700 64.9000 2,571,200
Weekend
Weekend
65.0100 66.0300 64.6400 65.5900 1,354,400
No trading
65.5200 65.6200 65.0000 65.0100 1,132,900
65.4200 65.6600 65.2700 65.4200 854,500
65.4100 65.7300 65.2300 65.4200 1,080,500
Weekend
Weekend
65.3600 65.3800 64.9700 65.2400 1,004,300
No trading
65.1500 65.4800 64.9800 65.4500 718,700
65.0400 65.3300 64.8000 65.2600 1,525,600
64.4800 65.1500 64.3000 65.0300 2,132,200
Weekend
Weekend
65.4200 65.7000 64.5300 64.6300 3,877,900
65.6000 66.0400 65.5700 65.6900 1,611,100
65.1200 65.6700 64.8700 65.4800 2,198,400
4 · 8-K After-hours · 16:20 ET 8-K ↗
65.8400 65.8900 65.0100 65.2600 1,456,700
65.6000 65.7900 65.1400 65.6300 1,744,200
Weekend
Weekend
65.3000 65.5900 65.0900 65.3300 1,530,000
65.0100 65.6600 64.8000 64.9300 1,388,900
65.0000 65.5500 64.5900 64.8100 3,338,600
64.9700 65.4500 64.7200 64.8900 1,296,500
65.5000 65.6700 64.7000 64.7800 1,920,900
Weekend
Weekend
65.7200 65.8900 65.2500 65.5000 1,306,700
3 · 8-K Next filing day · accepted 04 Dec, 21:45 ET 8-K ↗
66.1200 66.5800 65.4800 65.7100 2,795,400
66.5900 66.6900 65.8500 66.3800 2,336,900
67.7100 67.7100 66.5200 66.5300 1,868,400
69.2200 69.4200 67.5300 67.6000 2,177,800
Weekend
Weekend
69.4500 69.5900 69.1600 69.4700 950,900
No trading
68.6800 69.3100 68.6000 69.1800 1,578,700
68.5200 68.8500 67.8700 68.4800 1,561,600
68.2700 68.5500 67.6400 68.4100 2,005,000
Weekend
Weekend
67.6200 68.4700 67.4100 68.2700 2,225,400
67.5400 67.9700 67.3300 67.4700 2,624,900
68.0200 68.0900 67.1000 67.2200 1,783,800
68.4300 68.7900 67.8400 68.0900 1,999,300
67.5200 68.3000 67.4600 68.1000 1,619,700
Weekend
Weekend
67.5100 67.7400 67.1000 67.3300 1,451,600
68.0300 68.2600 67.3000 67.4200 1,771,800
67.9600 68.4500 67.7700 68.1400 1,895,800
67.3400 68.1000 67.1100 68.0200 2,515,400
67.1900 67.4500 66.6400 66.9600 1,879,100
Weekend
Weekend
2 · 10-Q After market open · 12:02 ET 10-Q ↗
66.7800 68.2400 65.7800 67.3400 5,146,400
1 · 8-K Next filing day · accepted 06 Nov, 18:10 ET 8-K ↗
66.7600 67.4700 66.7000 66.7400 2,143,200
66.5100 67.1800 66.4000 66.8500 2,610,800
66.7700 66.7900 66.2000 66.5900 3,326,300
66.3700 66.6800 65.9300 66.4700 2,968,100
Weekend
Weekend
67.3500 67.3500 66.6600 66.8200 2,113,800
67.8200 68.4900 67.7600 67.9300 2,191,400
67.9100 68.2400 67.5300 67.7900 2,768,800
68.7100 68.8400 67.7400 67.9800 2,342,500
68.9200 69.2900 68.0400 68.8600 1,673,500
Weekend
Weekend
69.3400 69.7500 68.9100 68.9700 3,364,400

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.

18 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
17 10-Q 10-Q (opens SEC filing in a new tab) After market open · 11:22 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 30 Jul, 18:02 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:05 ET Summarise
14 10-Q 10-Q (opens SEC filing in a new tab) After market open · 11:07 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 30 Apr, 18:23 ET Summarise
12 DEFA14A DEFA14A (opens SEC filing in a new tab) Next filing day · accepted 30 Mar, 18:03 ET Summarise
11 DEF 14A DEF 14A (opens SEC filing in a new tab) Next filing day · accepted 30 Mar, 18:02 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:28 ET Summarise
9 424B5 424B5 (opens SEC filing in a new tab) After-hours · 17:27 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 03 Mar, 20:13 ET Summarise
7 10-K 10-K (opens SEC filing in a new tab) After market open · 14:58 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 19 Feb, 18:22 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:20 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 04 Dec, 21:45 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After market open · 12:02 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 06 Nov, 18:10 ET Summarise