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
1.16%
Industry change · 12M
-0.55 pp
Electric Utilities · contribution
-0.551 pp
Company participation
92%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2019 · 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 |
|---|---|---|---|---|---|---|---|
| Duke Energy → DUK | United States | $62.6bn | 0.206% | +0.007 pp | -0.107 pp | +17.1% | Yes |
| Southern Company → SO | United States | $50.0bn | 0.165% | +0.010 pp | -0.093 pp | +13.5% | Yes |
| American Electric Power → AEP | United States | $39.0bn | 0.129% | +0.006 pp | -0.064 pp | +19.3% | Yes |
| Public Service Enterprise Group → PEG | United States | $27.6bn | 0.091% | -0.001 pp | -0.059 pp | +8.9% | Yes |
| Edison International → EIX | United States | $18.6bn | 0.061% | -0.015 pp | -0.055 pp | -5.3% | No |
| PPL Corporation → PPL | United States | $22.6bn | 0.074% | +0.002 pp | -0.051 pp | +4.1% | Yes |
| Evergy → EVRG | United States | $15.1bn | 0.050% | +0.008 pp | +0.050 pp | +14.5% | Yes |
| Exelon → EXC | United States | $32.9bn | 0.109% | +0.006 pp | -0.042 pp | +28.2% | Yes |
| Eversource Energy → ES | United States | $22.0bn | 0.073% | +0.005 pp | -0.041 pp | +13.7% | Yes |
| WEC Energy Group → WEC | United States | $23.0bn | 0.076% | +0.003 pp | -0.040 pp | +17.5% | Yes |
| Alliant Energy → LNT | United States | $10.5bn | 0.035% | +0.001 pp | -0.018 pp | +15.5% | Yes |
| FirstEnergy → FE | United States | $20.0bn | 0.066% | +0.001 pp | -0.017 pp | +24.2% | Yes |
| Entergy → ETR | United States | $8.1bn | 0.027% | +0.001 pp | -0.014 pp | +18.5% | 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.