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
0.91%
Industry change · 12M
-1.29 pp
Electric Utilities · contribution
-1.287 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 | $62.2bn | 0.149% | -0.138 pp | -0.215 pp | -12.7% | No |
| Duke Energy → DUK | United States | $69.2bn | 0.166% | -0.155 pp | -0.185 pp | +0.5% | No |
| American Electric Power → AEP | United States | $40.2bn | 0.096% | -0.115 pp | -0.158 pp | -19.8% | No |
| FirstEnergy → FE | United States | $16.7bn | 0.040% | -0.036 pp | -0.095 pp | -36.7% | No |
| Exelon → EXC | United States | $28.9bn | 0.069% | -0.062 pp | -0.094 pp | -9.3% | No |
| WEC Energy Group → WEC | United States | $28.0bn | 0.067% | -0.083 pp | -0.088 pp | -8.6% | No |
| Edison International → EIX | United States | $22.0bn | 0.053% | -0.048 pp | -0.083 pp | -20.4% | No |
| Public Service Enterprise Group → PEG | United States | $28.5bn | 0.068% | -0.071 pp | -0.079 pp | -1.2% | No |
| PPL Corporation → PPL | United States | $21.3bn | 0.051% | -0.049 pp | -0.078 pp | -19.1% | No |
| Eversource Energy → ES | United States | $30.0bn | 0.072% | -0.070 pp | -0.076 pp | -2.8% | No |
| Evergy → EVRG | United States | $12.2bn | 0.029% | -0.030 pp | -0.052 pp | -22.9% | No |
| Entergy → ETR | United States | $9.5bn | 0.023% | -0.025 pp | -0.042 pp | -25.0% | No |
| Alliant Energy → LNT | United States | $12.2bn | 0.029% | -0.036 pp | -0.041 pp | -15.6% | 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.