Williams Companies market cap WMB

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

Williams Companies is worth $87.7B at the close on Oct 23, 2026, at $71.70 a share.

That is up 25% over the last year and up 157% over five years.

Its highest close in our data was $96B in May 2026.

Market cap over time

Year	End of year	Low	High	Change
2026 so far	$87.7B	$73.7B	$96B	+21%
2025	$72.7B	$66.3B	$78.7B	+11%
2024	$65.8B	$41.2B	$72.7B	+55%
2023	$42.4B	$34.5B	$45.4B	+6%
2022	$40.1B	$34B	$45.7B	+27%
2021	$31.6B	$25.8B	$35.9B	+30%
2020	$24.3B	$14B	$28.9B	−15%
2019	$28.6B	$26.8B	$35.3B	+10%
2018	$26B	$20.1B	$31B	+3%
2017	$25.2B	$21.2B	$26.4B	+8%
2016	$23.4B	$10.1B	$23.7B	+21%
2015	$19.3B	$16.1B	$43.4B	−44%
2014	$34.1B	$26B	$44.4B	+30%
2013	$26.2B	$21B	$26.2B	+31%
2012	$19.9B	$16.1B	$22.5B	+29%
2011	$15.4B	$11.4B	$15.4B	+35%
2010	$11.5B	$8.2B	$11.5B	+18%
2009	$9.8B	$7.7B	$9.9B	n/a

Companies in Oil & Gas Midstream nearest Williams Companies' size, closest first, today.

Company	Market cap
WMBWilliams Companies	$87.7B
EPDEnterprise Products Partners	$80.1B
KMIKinder Morgan	$76.7B
ETEnergy Transfer	$69B
TRGPTarga Resources	$64.8B
LNGCheniere Energy	$61.7B
OKEONEOK	$60.4B
MPLXMPLX Lp	$59.9B
VGVenture Global	$35B
CQPCheniere Energy Partners	$32B
WESWestern Midstream Partners	$18.6B
Peer median	$61B