American Electric Power market cap AEP

Share price times shares outstanding: what the whole company sells for, since 2009.

American Electric Power is worth $70.6B at the close on Oct 23, 2026, at $129.69 a share.

That is up 14% over the last year and up 65% over five years.

Its highest close in our data was $75.5B in Jun 2026.

Market cap over time

Year	End of year	Low	High	Change
2026 so far	$70.6B	$62B	$75.5B	+14%
2025	$61.9B	$49B	$66.2B	+26%
2024	$49.3B	$40.3B	$55.4B	+15%
2023	$42.7B	$37.2B	$49.6B	−12%
2022	$48.8B	$42.6B	$53.9B	+9%
2021	$44.8B	$37.2B	$45.6B	+8%
2020	$41.3B	$35.3B	$51.5B	−11%
2019	$46.5B	$36.2B	$46.9B	+26%
2018	$36.9B	$31.6B	$39.5B	+2%
2017	$36.2B	$30.9B	$38B	+17%
2016	$31B	$28.6B	$34.7B	+8%
2015	$28.6B	$25.8B	$31.6B	−6%
2014	$30.3B	$22.5B	$30.3B	+34%
2013	$22.7B	$20.7B	$24.8B	+11%
2012	$20.5B	$18B	$21.8B	+3%
2011	$19.9B	$16.3B	$20.1B	+16%
2010	$17.2B	$14.9B	$18.1B	+4%
2009	$16.6B	$14.4B	$17B	n/a

Companies in Regulated Electric nearest American Electric Power's size, closest first, today.

Company	Market cap
AEPAmerican Electric Power	$70.6B
DDominion Energy	$57.3B
DUKDuke Energy	$97.4B
ETREntergy	$50.1B
XELXcel Energy	$48.8B
SOSouthern	$106.9B
EXCExelon	$45.9B
EDConsolidated Edison	$42.8B
WECWEC Energy	$36.2B
PEGPublic Service Enterprise	$35.9B
PCGPG&E	$33.8B
Peer median	$47.3B