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
1.40%
Industry change · 12M
-0.43 pp
Electric Utilities · contribution
-0.427 pp
Company participation
15%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 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 |
|---|---|---|---|---|---|---|---|
| American Electric Power → AEP | United States | $42.7bn | 0.143% | -0.009 pp | -0.069 pp | -2.5% | No |
| Southern Company → SO | United States | $66.0bn | 0.220% | -0.011 pp | -0.067 pp | +13.0% | No |
| Duke Energy → DUK | United States | $78.5bn | 0.262% | -0.015 pp | -0.059 pp | +15.2% | No |
| WEC Energy Group → WEC | United States | $28.4bn | 0.095% | -0.007 pp | -0.055 pp | -7.9% | No |
| Eversource Energy → ES | United States | $29.2bn | 0.097% | -0.004 pp | -0.044 pp | +0.1% | No |
| Public Service Enterprise Group → PEG | United States | $32.3bn | 0.108% | -0.000 pp | -0.032 pp | +13.5% | No |
| PPL Corporation → PPL | United States | $22.2bn | 0.074% | -0.001 pp | -0.026 pp | +10.9% | No |
| Edison International → EIX | United States | $23.9bn | 0.080% | +0.009 pp | -0.021 pp | +17.5% | Yes |
| Alliant Energy → LNT | United States | $14.2bn | 0.047% | -0.003 pp | -0.018 pp | +5.4% | No |
| Entergy → ETR | United States | $10.4bn | 0.035% | -0.001 pp | -0.013 pp | +5.5% | No |
| Evergy → EVRG | United States | $14.6bn | 0.049% | -0.002 pp | -0.010 pp | +19.7% | No |
| Exelon → EXC | United States | $37.1bn | 0.124% | +0.012 pp | -0.007 pp | +38.2% | Yes |
| FirstEnergy → FE | United States | $21.0bn | 0.070% | -0.001 pp | -0.006 pp | +35.8% | No |
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.