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
1.82%
Industry change · 12M
+0.11 pp
Electric Utilities · contribution
+0.109 pp
Company participation
92%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Duke Energy →
DUK
United States$54.2bn0.333%+0.019 pp+0.019 pp-0.1%Yes
Southern Company →
SO
United States$45.0bn0.276%+0.018 pp+0.018 pp+0.3%Yes
FirstEnergy →
FE
United States$16.2bn0.099%+0.016 pp+0.016 pp+4.6%Yes
Exelon →
EXC
United States$26.9bn0.165%+0.014 pp+0.014 pp+2.3%Yes
American Electric Power →
AEP
United States$33.7bn0.207%+0.014 pp+0.014 pp+0.7%Yes
Edison International →
EIX
United States$20.7bn0.127%+0.011 pp+0.011 pp+2.8%Yes
Public Service Enterprise Group →
PEG
United States$25.4bn0.156%+0.006 pp+0.006 pp-2.2%Yes
WEC Energy Group →
WEC
United States$19.8bn0.121%+0.006 pp+0.006 pp-1.6%Yes
Alliant Energy →
LNT
United States$9.5bn0.058%+0.006 pp+0.006 pp+2.8%Yes
PPL Corporation →
PPL
United States$19.6bn0.120%-0.005 pp-0.005 pp-9.9%No
Entergy →
ETR
United States$7.1bn0.044%+0.003 pp+0.003 pp+1.3%Yes
Eversource Energy →
ES
United States$18.7bn0.115%+0.001 pp+0.001 pp-5.8%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.