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
1.05%
Industry change · 12M
-0.66 pp
Electric Utilities · contribution
-0.661 pp
Company participation
8%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Duke Energy →
DUK
United States$57.9bn0.187%-0.141 pp-0.127 pp+7.2%No
Southern Company →
SO
United States$44.4bn0.143%-0.132 pp-0.115 pp+1.0%No
American Electric Power →
AEP
United States$35.4bn0.114%-0.089 pp-0.079 pp+7.2%No
Public Service Enterprise Group →
PEG
United States$26.5bn0.085%-0.077 pp-0.064 pp+2.8%No
PPL Corporation →
PPL
United States$20.8bn0.067%-0.049 pp-0.058 pp-3.7%No
Exelon →
EXC
United States$30.1bn0.097%-0.076 pp-0.053 pp+16.5%No
Eversource Energy →
ES
United States$19.8bn0.064%-0.046 pp-0.050 pp+0.7%No
Edison International →
EIX
United States$21.4bn0.069%-0.054 pp-0.047 pp+7.2%No
WEC Energy Group →
WEC
United States$21.3bn0.069%-0.052 pp-0.047 pp+7.9%No
Evergy →
EVRG
United States$12.4bn0.040%+0.040 pp+0.040 pp+13.0%Yes
FirstEnergy →
FE
United States$18.2bn0.059%-0.041 pp-0.025 pp+17.3%No
Alliant Energy →
LNT
United States$10.0bn0.032%-0.026 pp-0.020 pp+9.5%No
Entergy →
ETR
United States$7.6bn0.024%-0.020 pp-0.016 pp+9.9%No

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.