Observatory · observe first

ExxonMobil

XOM · United States · Integrated Oil & Gas · matched S&P 500 member. Follow its market-weight contribution.

Historical time machine
Latest available · not live
20182026
Universe weight
1.124%
12M weight contribution
+1.124 pp
3M weight contribution
+1.124 pp
12M price return
+48.5%

Share of matched S&P 500 members

Monthly observations through Sep 2026

1.11.11.1

Company price index

A separate dimension from market allocation

271273274

Historical observations

Most recent 24 observations at or before the selected month

MonthMarket capUniverse weight12M weight change12M returnAbove 6M weight average
Sep 2026$669.2bn1.124%+1.124 pp+48.5%Yes
Aug 2026$661.8bn1.102%+1.102 pp+44.9%Yes

Its weight is estimated market cap divided by the total estimated market cap of matched S&P 500 members for the month. This is not an official float-adjusted S&P index weight.