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
1.58%
Industry change · 12M
-0.08 pp
Electric Utilities · contribution
-0.081 pp
Company participation
21%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2023 · 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 | $74.3bn | 0.253% | -0.033 pp | -0.036 pp | -10.2% | No |
| Constellation Energy → CEG | United States | $25.7bn | 0.088% | -0.014 pp | +0.026 pp | +40.9% | No |
| Exelon → EXC | United States | $41.6bn | 0.142% | -0.013 pp | -0.015 pp | -9.2% | No |
| Public Service Enterprise Group → PEG | United States | $31.1bn | 0.106% | -0.004 pp | -0.012 pp | -7.6% | Yes |
| FirstEnergy → FE | United States | $22.9bn | 0.078% | -0.008 pp | -0.010 pp | -9.2% | No |
| American Electric Power → AEP | United States | $46.8bn | 0.160% | -0.017 pp | -0.010 pp | -5.6% | No |
| Eversource Energy → ES | United States | $27.3bn | 0.093% | -0.012 pp | -0.009 pp | -8.5% | No |
| Alliant Energy → LNT | United States | $13.4bn | 0.046% | -0.004 pp | -0.007 pp | -11.8% | No |
| Evergy → EVRG | United States | $14.0bn | 0.048% | -0.004 pp | -0.005 pp | -7.1% | No |
| WEC Energy Group → WEC | United States | $29.9bn | 0.102% | -0.005 pp | -0.004 pp | -2.1% | No |
| Edison International → EIX | United States | $27.0bn | 0.092% | +0.004 pp | +0.002 pp | +5.3% | Yes |
| Entergy → ETR | United States | $11.4bn | 0.039% | -0.002 pp | -0.001 pp | -4.2% | No |
| PPL Corporation → PPL | United States | $20.5bn | 0.070% | -0.008 pp | -0.001 pp | +0.6% | No |
| Southern Company → SO | United States | $75.8bn | 0.258% | -0.022 pp | -0.000 pp | -0.2% | 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.