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
1.20%
Industry change · 12M
-0.52 pp
Electric Utilities · contribution
-0.517 pp
Company participation
8%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Southern Company →
SO
United States$45.2bn0.162%+0.021 pp-0.097 pp+2.6%No
Duke Energy →
DUK
United States$61.5bn0.220%+0.038 pp-0.093 pp+15.1%No
American Electric Power →
AEP
United States$36.9bn0.132%+0.020 pp-0.061 pp+12.7%No
Public Service Enterprise Group →
PEG
United States$26.3bn0.094%+0.009 pp-0.056 pp+3.9%No
Evergy →
EVRG
United States$15.0bn0.053%+0.015 pp+0.053 pp+13.4%Yes
PPL Corporation →
PPL
United States$20.4bn0.073%+0.008 pp-0.052 pp-5.8%No
Edison International →
EIX
United States$18.5bn0.066%-0.004 pp-0.050 pp-5.6%No
Eversource Energy →
ES
United States$20.6bn0.074%+0.012 pp-0.040 pp+6.6%No
Exelon →
EXC
United States$31.1bn0.111%+0.015 pp-0.039 pp+21.1%No
WEC Energy Group →
WEC
United States$21.9bn0.078%+0.011 pp-0.038 pp+11.5%No
Alliant Energy →
LNT
United States$10.0bn0.036%+0.004 pp-0.017 pp+8.8%No
FirstEnergy →
FE
United States$19.2bn0.069%+0.011 pp-0.015 pp+19.0%No
Entergy →
ETR
United States$7.8bn0.028%+0.004 pp-0.013 pp+14.4%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.