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Ameren Illinois Co (AILIP) stock

AILIPOTCElectric & Other Services CombinedFiscal year ends December 31Also trades as AILIH, AILIM, AILIN, AILIO, AILLI, AILLM, AILLN, AILLO, AILLP
Last filing: 10-Q on Aug 3, 2026
$66.48+0.00 (0.00%)

Close on Oct 19, 2026Market cap –P/E –Yield –

Price history

Ameren Illinois share prices for every week, newest first. Adjusted for stock splits, not for dividends.

Download all as CSV
Close, Oct 19, 2026
$66.48
0.00% on the day
52-week range
$66.48 – $72.00
-7.7% from the high
Change over 52 weeks
-7.0%
From $71.45 on Oct 17, 2025
Average volume
14
Shares a day, last 90 sessions
Week ofOpenHighLowCloseChangeVolume
Oct 19, 2026$66.48$66.48$66.48$66.480.00%0
Oct 12, 2026$66.48$66.48$66.48$66.480.00%0
Oct 5, 2026$66.48$66.48$66.48$66.480.00%0
Sep 28, 2026$67.00$67.00$66.48$66.48-0.78%201
Sep 21, 2026$67.00$67.00$67.00$67.000.00%0
Sep 14, 2026$67.00$67.00$67.00$67.000.00%0
Sep 8, 2026$67.00$67.00$67.00$67.000.00%0
Aug 31, 2026$67.30$67.30$67.00$67.00-0.45%100
Aug 24, 2026$67.30$67.30$67.30$67.300.00%0
Aug 17, 2026$67.30$67.30$67.30$67.300.00%150
Aug 10, 2026$67.29$67.30$67.29$67.30+0.01%100
Aug 3, 2026$67.25$67.29$67.25$67.29+0.06%478
Jul 27, 2026$67.25$67.25$67.25$67.250.00%0
Jul 20, 2026$67.25$67.25$67.25$67.25-2.54%100
Jul 13, 2026$69.00$69.00$69.00$69.000.00%0
Jul 6, 2026$69.00$69.00$69.00$69.000.00%0
Jun 29, 2026$69.00$69.00$69.00$69.000.00%0
Jun 22, 2026$68.25$69.00$68.25$69.00+1.10%100
Jun 15, 2026$68.25$68.25$68.25$68.250.00%0
Jun 8, 2026$68.25$68.25$68.25$68.250.00%0
Jun 1, 2026$67.25$68.25$67.25$68.25+1.49%100
May 26, 2026$70.00$70.00$67.25$67.25-3.93%730
May 18, 2026$70.00$70.00$70.00$70.000.00%0
May 11, 2026$70.00$70.00$70.00$70.000.00%0
May 4, 2026$70.00$70.00$70.00$70.000.00%0
Apr 27, 2026$70.00$70.00$70.00$70.000.00%0
Apr 20, 2026$70.00$70.00$70.00$70.000.00%0
Apr 13, 2026$70.00$70.00$70.00$70.000.00%0
Apr 6, 2026$70.00$70.00$70.00$70.000.00%100
Mar 30, 2026$70.00$70.00$70.00$70.000.00%0
Mar 23, 2026$69.00$71.00$69.00$70.00+1.45%1,053
Mar 16, 2026$67.53$69.00$67.53$69.00+2.18%820
Mar 9, 2026$67.53$67.53$67.53$67.530.00%0
Mar 2, 2026$67.53$67.53$67.53$67.530.00%0
Feb 23, 2026$67.53$67.53$67.53$67.530.00%0
Feb 17, 2026$67.53$67.53$67.53$67.530.00%0
Feb 9, 2026$67.53$67.53$67.53$67.530.00%0
Feb 2, 2026$67.53$67.53$67.53$67.530.00%0
Jan 26, 2026$67.53$67.53$67.53$67.53+0.82%280
Jan 20, 2026$66.98$66.98$66.98$66.980.00%0
Jan 12, 2026$66.98$66.98$66.98$66.980.00%0
Jan 5, 2026$66.98$66.98$66.98$66.980.00%0
Dec 29, 2025$66.98$66.98$66.98$66.980.00%0
Dec 22, 2025$66.98$66.98$66.98$66.98+0.34%539
Dec 15, 2025$72.00$72.00$66.75$66.75-7.29%100
Dec 8, 2025$72.00$72.00$72.00$72.000.00%0
Dec 1, 2025$71.45$72.00$71.45$72.00+0.77%150
Nov 24, 2025$71.45$71.45$71.45$71.450.00%0
Nov 17, 2025$71.45$71.45$71.45$71.450.00%0
Nov 10, 2025$71.45$71.45$71.45$71.450.00%0
Nov 3, 2025$71.45$71.45$71.45$71.450.00%0
Oct 27, 2025$71.45$71.45$71.45$71.450.00%0

Seasonality

AILIP return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average1.1%-0.8%-0.6%0.6%-1.1%-0.4%2.0%-0.8%1.4%0.5%1.1%-1.2%
Months up9 of 102 of 102 of 108 of 104 of 102 of 109 of 102 of 103 of 106 of 103 of 92 of 9
20262.4%0.0%3.7%1.5%-3.9%2.6%-1.0%0.1%-0.5%0.8%
20252.7%0.7%0.7%-4.1%1.3%0.0%4.6%-4.2%9.6%0.0%0.0%-6.3%
20241.5%-4.2%0.0%0.1%1.5%-2.8%1.2%4.8%5.7%-6.0%9.4%-9.0%
20231.3%0.0%-1.9%0.1%0.0%0.0%1.4%0.0%0.0%-2.1%-5.0%0.0%
20221.1%-3.4%-1.5%1.1%-8.4%-5.8%3.2%0.0%0.0%-0.5%-1.2%0.0%
20211.0%0.0%0.0%-2.7%0.0%0.0%1.1%-3.1%0.8%1.1%0.1%3.8%
20201.1%1.8%-1.8%3.0%-2.6%0.0%1.5%0.0%0.0%7.7%0.0%1.0%
20193.2%-2.8%-0.1%1.1%0.8%0.0%1.1%0.0%-0.8%1.1%0.0%0.0%
2018-4.1%0.0%0.0%3.3%0.0%2.1%1.1%0.0%-1.0%1.1%0.0%0.0%
20171.1%0.0%-5.0%2.6%0.5%0.0%5.5%-6.0%0.0%2.1%6.5%0.0%