Observatory · observe first

Follow the allocation change

Matched S&P 500 members → sector → industry → sub-industry → company. Each step uses the same percentage points.

Historical time machine
Historical observation
20182026
Universe›Utilities›Electric Utilities›Electric Utilities
Electric Utilities · weight
1.88%
Industry change · 12M
+0.16 pp
Electric Utilities · contribution
+0.164 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Apr 2018 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Duke Energy →
DUK
United States$56.1bn0.345%+0.031 pp+0.031 pp+3.3%Yes
Southern Company →
SO
United States$46.5bn0.286%+0.027 pp+0.027 pp+3.6%Yes
American Electric Power →
AEP
United States$34.5bn0.212%+0.019 pp+0.019 pp+2.7%Yes
FirstEnergy →
FE
United States$16.4bn0.101%+0.017 pp+0.017 pp+5.8%Yes
Exelon →
EXC
United States$27.3bn0.168%+0.017 pp+0.017 pp+4.0%Yes
Edison International →
EIX
United States$21.3bn0.131%+0.015 pp+0.015 pp+5.8%Yes
Public Service Enterprise Group →
PEG
United States$26.3bn0.162%+0.012 pp+0.012 pp+1.5%Yes
WEC Energy Group →
WEC
United States$20.3bn0.125%+0.009 pp+0.009 pp+0.9%Yes
Alliant Energy →
LNT
United States$9.9bn0.061%+0.009 pp+0.009 pp+8.9%Yes
Entergy →
ETR
United States$7.4bn0.045%+0.005 pp+0.005 pp+5.0%Yes
Eversource Energy →
ES
United States$19.1bn0.117%+0.003 pp+0.003 pp-3.6%Yes
PPL Corporation →
PPL
United States$20.2bn0.124%-0.001 pp-0.001 pp-7.3%Yes

Company contributions use weights among matched S&P 500 members and add through each level without rescaling. Companies without matched shares and prices are omitted. These observations do not establish official index weights or actual fund flows.