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Ameren Illinois Co (AILIM) stock

AILIMOTCElectric & Other Services CombinedFiscal year ends December 31Also trades as AILIH, AILIN, AILIO, AILIP, AILLI, AILLM, AILLN, AILLO, AILLP
Last filing: 10-Q on Aug 3, 2026
$75.50−0.25 (-0.33%)

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
$75.50
-0.33% on the day
52-week range
$74.30 – $81.00
-6.8% from the high
Change over 52 weeks
-1.9%
From $77.00 on Oct 17, 2025
Average volume
11
Shares a day, last 90 sessions
DateOpenHighLowCloseChangeVolume
Oct 19, 2026$74.30$75.50$74.30$75.50-0.33%300
Oct 16, 2026$75.75$75.75$75.75$75.750.00%0
Oct 15, 2026$75.75$75.75$75.75$75.750.00%0
Oct 14, 2026$75.75$75.75$75.75$75.750.00%0
Oct 13, 2026$75.75$75.75$75.75$75.750.00%0
Oct 12, 2026$75.75$75.75$75.75$75.750.00%0
Oct 9, 2026$75.75$75.75$75.75$75.750.00%0
Oct 8, 2026$75.75$75.75$75.75$75.750.00%0
Oct 7, 2026$75.75$75.75$75.75$75.750.00%0
Oct 6, 2026$75.75$75.75$75.75$75.750.00%0
Oct 5, 2026$75.75$75.75$75.75$75.750.00%0
Oct 2, 2026$75.75$75.75$75.75$75.750.00%0
Oct 1, 2026$75.75$75.75$75.75$75.750.00%0
Sep 30, 2026$75.75$75.75$75.75$75.750.00%0
Sep 29, 2026$75.75$75.75$75.75$75.750.00%0
Sep 28, 2026$75.77$75.77$75.75$75.75-1.62%200
Sep 25, 2026$77.00$77.00$77.00$77.000.00%0
Sep 24, 2026$77.00$77.00$77.00$77.000.00%0
Sep 23, 2026$77.00$77.00$77.00$77.000.00%0
Sep 22, 2026$77.00$77.00$77.00$77.000.00%0
Sep 21, 2026$77.00$77.00$77.00$77.000.00%0
Sep 18, 2026$77.00$77.00$77.00$77.000.00%0
Sep 17, 2026$77.00$77.00$77.00$77.000.00%0
Sep 16, 2026$77.00$77.00$77.00$77.000.00%0
Sep 15, 2026$77.00$77.00$77.00$77.000.00%0
Sep 14, 2026$77.00$77.00$77.00$77.000.00%0
Sep 11, 2026$77.00$77.00$77.00$77.000.00%0
Sep 10, 2026$77.00$77.00$77.00$77.000.00%0
Sep 9, 2026$77.00$77.00$77.00$77.000.00%0
Sep 8, 2026$77.00$77.00$77.00$77.000.00%0

Seasonality

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

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average1.4%-0.1%-1.3%-0.4%0.4%-1.1%2.7%-0.3%0.2%1.5%0.5%-0.7%
Months up9 of 102 of 104 of 106 of 102 of 100 of 1010 of 101 of 101 of 109 of 104 of 92 of 9
20261.9%2.3%2.5%-3.5%3.9%-5.0%2.9%0.0%-1.6%1.2%
20250.4%1.1%1.5%-2.3%-0.2%-3.0%5.0%2.3%0.0%0.6%0.0%0.0%
20243.4%0.0%0.5%-1.3%-0.9%-1.8%6.5%0.0%3.8%-1.0%-1.4%-0.1%
20231.2%0.0%-10.2%1.4%-0.2%0.0%1.4%-3.3%0.0%1.4%0.0%-7.4%
2022-0.1%-1.7%0.0%-3.6%1.8%-1.2%1.2%0.0%0.0%1.2%0.0%0.0%
20211.1%-0.8%-0.9%1.4%-0.2%0.0%1.3%-1.3%0.0%1.2%2.0%0.0%
20201.2%0.0%0.1%0.6%0.0%0.0%1.2%0.0%0.0%4.2%0.5%0.5%
20192.7%0.0%-2.4%1.2%0.0%0.0%2.3%-0.5%0.0%1.2%0.0%-0.5%
20181.2%0.0%-3.6%1.2%0.0%0.0%1.2%0.0%0.0%1.2%2.0%0.0%
20171.2%-1.7%0.0%1.2%0.0%0.0%3.5%0.0%0.0%3.3%1.7%1.0%