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Ameren Illinois Co (AILIN) stock

AILINOTCElectric & Other Services CombinedFiscal year ends December 31Also trades as AILIH, AILIM, AILIO, AILIP, AILLI, AILLM, AILLN, AILLO, AILLP
Last filing: 10-Q on Aug 3, 2026
$70.35+0.00 (0.00%)

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

Price history

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

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Close, Oct 19, 2026
$70.35
0.00% on the day
52-week range
$70.35 – $74.25
-5.3% from the high
Change over 52 weeks
-2.6%
From $72.25 on Oct 17, 2025
Average volume
29
Shares a day, last 90 sessions
DateOpenHighLowCloseChangeVolume
Oct 19, 2026$70.35$70.35$70.35$70.350.00%0
Oct 16, 2026$70.35$70.35$70.35$70.350.00%0
Oct 15, 2026$70.35$70.35$70.35$70.350.00%0
Oct 14, 2026$70.35$70.35$70.35$70.350.00%0
Oct 13, 2026$70.35$70.35$70.35$70.350.00%0
Oct 12, 2026$70.35$70.35$70.35$70.350.00%0
Oct 9, 2026$70.35$70.35$70.35$70.350.00%0
Oct 8, 2026$70.35$70.35$70.35$70.350.00%0
Oct 7, 2026$70.35$70.35$70.35$70.350.00%0
Oct 6, 2026$70.35$70.35$70.35$70.350.00%0
Oct 5, 2026$70.35$70.35$70.35$70.350.00%0
Oct 2, 2026$70.35$70.35$70.35$70.350.00%0
Oct 1, 2026$70.35$70.35$70.35$70.350.00%0
Sep 30, 2026$70.35$70.35$70.35$70.350.00%0
Sep 29, 2026$70.35$70.35$70.35$70.350.00%0
Sep 28, 2026$70.35$70.35$70.35$70.350.00%0
Sep 25, 2026$70.35$70.35$70.35$70.350.00%0
Sep 24, 2026$70.35$70.35$70.35$70.350.00%0
Sep 23, 2026$70.35$70.35$70.35$70.350.00%0
Sep 22, 2026$70.35$70.35$70.35$70.350.00%0
Sep 21, 2026$70.35$70.35$70.35$70.35-0.92%100
Sep 18, 2026$71.00$71.00$71.00$71.000.00%0
Sep 17, 2026$71.00$71.00$71.00$71.000.00%0
Sep 16, 2026$71.00$71.00$71.00$71.000.00%0
Sep 15, 2026$71.00$71.00$71.00$71.000.00%0
Sep 14, 2026$71.00$71.00$71.00$71.000.00%0
Sep 11, 2026$71.00$71.00$71.00$71.000.00%0
Sep 10, 2026$71.00$71.00$71.00$71.000.00%0
Sep 9, 2026$71.00$71.00$71.00$71.000.00%0
Sep 8, 2026$71.00$71.00$71.00$71.000.00%0

Seasonality

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

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average1.4%-1.7%0.5%-0.2%-0.7%0.5%2.1%-1.1%-0.1%1.0%0.1%1.2%
Months up10 of 101 of 101 of 108 of 100 of 101 of 1010 of 103 of 101 of 108 of 102 of 92 of 9
20261.5%0.0%0.0%1.5%0.0%-3.1%1.6%1.4%-2.3%1.6%
20252.0%-2.9%0.0%3.4%0.0%-0.7%0.1%0.0%0.0%3.3%0.9%0.5%
20241.6%0.0%0.0%1.6%-1.3%0.0%1.9%3.9%2.7%1.2%-1.7%-0.7%
20231.2%-16.7%5.3%0.1%0.0%0.0%1.4%0.0%0.0%1.4%0.0%-9.0%
20221.1%0.0%0.0%-11.0%0.0%0.0%1.3%-14.8%0.0%1.5%0.0%20.0%
20211.1%2.8%0.0%-1.8%0.0%0.0%3.1%-2.8%0.0%1.1%1.9%0.0%
20201.1%0.0%0.0%1.1%0.0%0.0%1.1%0.0%-0.8%1.1%0.0%0.0%
20191.2%0.0%0.0%1.2%0.0%0.0%4.3%1.0%0.0%1.1%0.0%0.0%
20181.7%0.0%0.0%1.2%0.0%0.0%3.2%0.0%-1.0%-0.9%0.0%0.0%
20171.2%0.0%0.0%1.2%-6.1%8.5%2.4%0.0%0.0%-1.4%0.0%0.0%