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
2.16%
Industry change · 12M
+1.03 pp
Electric Utilities · contribution
+1.030 pp
Company participation
77%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 2019 · 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 | $65.7bn | 0.343% | +0.030 pp | +0.188 pp | +45.9% | Yes |
| Duke Energy → DUK | United States | $68.7bn | 0.358% | +0.022 pp | +0.158 pp | +19.0% | Yes |
| American Electric Power → AEP | United States | $46.6bn | 0.243% | +0.012 pp | +0.120 pp | +33.0% | Yes |
| WEC Energy Group → WEC | United States | $29.8bn | 0.155% | +0.012 pp | +0.082 pp | +42.2% | Yes |
| Public Service Enterprise Group → PEG | United States | $32.0bn | 0.167% | +0.013 pp | +0.075 pp | +22.3% | Yes |
| Eversource Energy → ES | United States | $27.1bn | 0.141% | +0.013 pp | +0.073 pp | +36.2% | Yes |
| FirstEnergy → FE | United States | $25.7bn | 0.134% | +0.010 pp | +0.069 pp | +34.5% | Yes |
| Exelon → EXC | United States | $31.5bn | 0.164% | -0.002 pp | +0.062 pp | +7.0% | No |
| PPL Corporation → PPL | United States | $24.2bn | 0.126% | +0.012 pp | +0.054 pp | +16.2% | Yes |
| Edison International → EIX | United States | $22.6bn | 0.118% | -0.012 pp | +0.041 pp | -5.9% | No |
| Entergy → ETR | United States | $12.1bn | 0.063% | +0.010 pp | +0.037 pp | +50.4% | Yes |
| Evergy → EVRG | United States | $15.0bn | 0.078% | -0.000 pp | +0.037 pp | +17.9% | No |
| Alliant Energy → LNT | United States | $12.7bn | 0.066% | +0.003 pp | +0.032 pp | +27.9% | 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.