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
1.31%
Industry change · 12M
-0.18 pp
Electric Utilities · contribution
-0.185 pp
Company participation
93%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2026 · 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 |
|---|---|---|---|---|---|---|---|
| Constellation Energy → CEG | United States | $89.7bn | 0.156% | +0.009 pp | -0.062 pp | -22.6% | No |
| Vistra Corp. → VST | United States | $53.5bn | 0.093% | +0.019 pp | -0.049 pp | -17.7% | Yes |
| Southern Company → SO | United States | $107.9bn | 0.187% | +0.030 pp | -0.030 pp | +7.6% | Yes |
| Duke Energy → DUK | United States | $98.7bn | 0.171% | +0.023 pp | -0.026 pp | +11.0% | Yes |
| Public Service Enterprise Group → PEG | United States | $40.4bn | 0.070% | +0.011 pp | -0.020 pp | -0.4% | Yes |
| Entergy → ETR | United States | $52.6bn | 0.091% | +0.017 pp | +0.014 pp | +41.7% | Yes |
| Exelon → EXC | United States | $47.7bn | 0.083% | +0.010 pp | -0.012 pp | +11.2% | Yes |
| American Electric Power → AEP | United States | $74.4bn | 0.129% | +0.026 pp | +0.010 pp | +36.0% | Yes |
| Edison International → EIX | United States | $28.6bn | 0.050% | +0.009 pp | +0.007 pp | +52.9% | Yes |
| PPL Corporation → PPL | United States | $27.3bn | 0.048% | +0.006 pp | -0.007 pp | +10.7% | Yes |
| WEC Energy Group → WEC | United States | $38.0bn | 0.066% | +0.011 pp | -0.006 pp | +15.8% | Yes |
| Eversource Energy → ES | United States | $27.2bn | 0.047% | +0.009 pp | -0.003 pp | +18.8% | Yes |
| FirstEnergy → FE | United States | $27.5bn | 0.048% | +0.005 pp | -0.002 pp | +22.9% | Yes |
| Alliant Energy → LNT | United States | $19.7bn | 0.034% | +0.007 pp | +0.001 pp | +30.1% | Yes |
| Evergy → EVRG | United States | $19.9bn | 0.035% | +0.007 pp | +0.000 pp | +29.9% | 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.