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
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Utilities
3 · Sub-industry
Inside Electric Utilities
Electric Utilities · weight
2.20%
Industry change · 12M
+1.04 pp
Electric Utilities · contribution
+1.038 pp
Company participation
85%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2020 · sorted by absolute contribution to 12-month change
| Company | Country | Market cap | Universe weight | 3M contribution | 12M contribution | 12M price return | Above 6M weight average |
|---|---|---|---|---|---|---|---|
| Southern Company → SO | United States | $73.8bn | 0.364% | +0.022 pp | +0.199 pp | +51.5% | Yes |
| Duke Energy → DUK | United States | $71.2bn | 0.351% | -0.007 pp | +0.145 pp | +16.1% | Yes |
| American Electric Power → AEP | United States | $51.5bn | 0.254% | +0.011 pp | +0.125 pp | +36.0% | Yes |
| WEC Energy Group → WEC | United States | $31.5bn | 0.155% | +0.000 pp | +0.079 pp | +40.8% | Yes |
| Eversource Energy → ES | United States | $29.9bn | 0.148% | +0.006 pp | +0.075 pp | +36.9% | Yes |
| Edison International → EIX | United States | $27.5bn | 0.135% | +0.018 pp | +0.074 pp | +39.2% | Yes |
| FirstEnergy → FE | United States | $27.4bn | 0.135% | +0.001 pp | +0.069 pp | +34.3% | Yes |
| Public Service Enterprise Group → PEG | United States | $29.9bn | 0.148% | -0.019 pp | +0.057 pp | +12.0% | No |
| PPL Corporation → PPL | United States | $26.2bn | 0.129% | +0.003 pp | +0.055 pp | +21.7% | Yes |
| Exelon → EXC | United States | $33.0bn | 0.163% | -0.002 pp | +0.054 pp | +2.8% | No |
| Entergy → ETR | United States | $13.1bn | 0.065% | +0.002 pp | +0.038 pp | +52.9% | Yes |
| Alliant Energy → LNT | United States | $14.3bn | 0.070% | +0.004 pp | +0.036 pp | +37.3% | Yes |
| Evergy → EVRG | United States | $16.4bn | 0.081% | +0.003 pp | +0.031 pp | +30.0% | 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.