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
1.38%
Industry change · 12M
-0.27 pp
Electric Utilities · contribution
-0.265 pp
Company participation
15%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 2021 · 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 | $64.8bn | 0.219% | -0.014 pp | -0.050 pp | +6.4% | No |
| American Electric Power → AEP | United States | $40.8bn | 0.138% | -0.012 pp | -0.041 pp | -1.1% | No |
| Duke Energy → DUK | United States | $74.6bn | 0.252% | -0.017 pp | -0.037 pp | +8.8% | No |
| WEC Energy Group → WEC | United States | $27.4bn | 0.093% | -0.007 pp | -0.035 pp | -5.7% | No |
| Eversource Energy → ES | United States | $28.3bn | 0.096% | -0.009 pp | -0.032 pp | -3.3% | No |
| PPL Corporation → PPL | United States | $20.9bn | 0.071% | -0.005 pp | -0.022 pp | +3.7% | No |
| Public Service Enterprise Group → PEG | United States | $31.6bn | 0.107% | -0.001 pp | -0.018 pp | +10.9% | No |
| Edison International → EIX | United States | $24.8bn | 0.084% | +0.010 pp | -0.015 pp | +11.3% | Yes |
| Entergy → ETR | United States | $10.1bn | 0.034% | -0.003 pp | -0.012 pp | -4.3% | No |
| Alliant Energy → LNT | United States | $13.7bn | 0.046% | -0.005 pp | -0.009 pp | +7.3% | No |
| FirstEnergy → FE | United States | $20.5bn | 0.069% | -0.001 pp | +0.008 pp | +48.0% | No |
| Evergy → EVRG | United States | $14.5bn | 0.049% | -0.003 pp | -0.004 pp | +18.3% | No |
| Exelon → EXC | United States | $36.8bn | 0.124% | +0.010 pp | +0.003 pp | +32.8% | 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.