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
1.46%
Industry change · 12M
+0.03 pp
Electric Utilities · contribution
+0.029 pp
Company participation
53%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 2025 · 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 |
|---|---|---|---|---|---|---|---|
| Entergy → ETR | United States | $43.6bn | 0.086% | +0.004 pp | +0.049 pp | +28.4% | Yes |
| Constellation Energy → CEG | United States | $113.8bn | 0.224% | +0.024 pp | +0.046 pp | +42.8% | Yes |
| Edison International → EIX | United States | $22.7bn | 0.045% | -0.000 pp | -0.030 pp | -29.0% | Yes |
| Public Service Enterprise Group → PEG | United States | $41.7bn | 0.082% | -0.003 pp | -0.022 pp | -8.7% | No |
| Southern Company → SO | United States | $100.3bn | 0.197% | -0.013 pp | -0.018 pp | +5.7% | No |
| American Electric Power → AEP | United States | $66.2bn | 0.130% | +0.007 pp | +0.013 pp | +28.3% | Yes |
| Duke Energy → DUK | United States | $96.4bn | 0.189% | -0.008 pp | -0.010 pp | +9.7% | No |
| Exelon → EXC | United States | $47.6bn | 0.094% | +0.002 pp | +0.006 pp | +23.4% | Yes |
| PPL Corporation → PPL | United States | $27.3bn | 0.054% | -0.002 pp | -0.003 pp | +9.0% | No |
| Eversource Energy → ES | United States | $25.2bn | 0.050% | +0.000 pp | -0.003 pp | +9.3% | No |
| Evergy → EVRG | United States | $17.9bn | 0.035% | +0.001 pp | +0.002 pp | +24.9% | Yes |
| WEC Energy Group → WEC | United States | $36.5bn | 0.072% | +0.001 pp | +0.001 pp | +14.7% | No |
| Vistra Corp. → VST | United States | $60.6bn | 0.119% | -0.014 pp | -0.001 pp | +12.5% | No |
| Alliant Energy → LNT | United States | $17.9bn | 0.035% | +0.000 pp | -0.001 pp | +13.5% | Yes |
| FirstEnergy → FE | United States | $27.6bn | 0.054% | +0.002 pp | +0.000 pp | +16.9% | 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.