Aecom market cap ACM

Share price times shares outstanding: what the whole company sells for, since 2010.

Aecom is worth $7.8B at the close on Oct 23, 2026, at $60.49 a share.

That is down 56% over the last year and down 21% over five years.

Its highest close in our data was $17.8B in Oct 2025.

Market cap over time

Year	End of year	Low	High	Change
2026 so far	$7.8B	$7.6B	$13.3B	−39%
2025	$12.8B	$11.8B	$17.8B	−10%
2024	$14.3B	$11.5B	$15.5B	+13%
2023	$12.6B	$10.4B	$12.6B	+7%
2022	$11.8B	$8.8B	$11.9B	+7%
2021	$11B	$7.6B	$11B	+47%
2020	$7.5B	$4.1B	$8.2B	+11%
2019	$6.8B	$4.3B	$6.8B	+65%
2018	$4.1B	$4B	$6.2B	−30%
2017	$5.9B	$4.8B	$6.1B	+5%
2016	$5.6B	$3.7B	$6.2B	+23%
2015	$4.5B	$3.9B	$5.2B	−2%
2014	$4.7B	$2.8B	$5.2B	+61%
2013	$2.9B	$2.6B	$3.6B	+12%
2012	$2.6B	$1.7B	$2.8B	+9%
2011	$2.4B	$2.1B	$3.5B	−28%
2010	$3.3B	$2.7B	$3.4B	n/a

Companies in Engineering & Construction nearest Aecom's size, closest first, today.

Company	Market cap
ACMAecom	$7.8B
IESCIES	$8.5B
DYDycom Industries	$6.8B
TTEKTetra Tech	$9.5B
STRLSterling Infrastructure	$10.9B
KBRKBR	$4.9B
ROADConstruction Partners	$4.7B
AGXArgan	$4.6B
MTZMasTec	$13.7B
VSECVSE	$4B
MYRGMYR	$4B
Peer median	$5.9B