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
1.83%
Industry change · 12M
-0.33 pp
Electric Utilities · contribution
-0.325 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 2020 · 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 |
|---|---|---|---|---|---|---|---|
| FirstEnergy → FE | United States | $16.1bn | 0.076% | +0.076 pp | -0.058 pp | -36.1% | Yes |
| Southern Company → SO | United States | $60.7bn | 0.287% | +0.287 pp | -0.055 pp | -4.3% | Yes |
| Duke Energy → DUK | United States | $67.7bn | 0.321% | +0.320 pp | -0.037 pp | +2.1% | Yes |
| Exelon → EXC | United States | $27.7bn | 0.131% | +0.131 pp | -0.033 pp | -9.0% | Yes |
| American Electric Power → AEP | United States | $44.6bn | 0.211% | +0.211 pp | -0.032 pp | -1.7% | Yes |
| Public Service Enterprise Group → PEG | United States | $29.4bn | 0.139% | +0.139 pp | -0.028 pp | -4.8% | Yes |
| PPL Corporation → PPL | United States | $21.1bn | 0.100% | +0.100 pp | -0.026 pp | -13.3% | Yes |
| Evergy → EVRG | United States | $12.5bn | 0.059% | +0.059 pp | -0.019 pp | -10.7% | Yes |
| Edison International → EIX | United States | $21.2bn | 0.100% | +0.100 pp | -0.017 pp | -6.9% | Yes |
| Entergy → ETR | United States | $10.1bn | 0.048% | +0.048 pp | -0.015 pp | -13.8% | Yes |
| WEC Energy Group → WEC | United States | $31.7bn | 0.150% | +0.150 pp | -0.005 pp | +9.5% | Yes |
| Alliant Energy → LNT | United States | $13.8bn | 0.065% | +0.065 pp | -0.001 pp | +6.6% | Yes |
| Eversource Energy → ES | United States | $29.9bn | 0.142% | +0.141 pp | +0.000 pp | +7.0% | 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.