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
1.54%
Industry change · 12M
+0.82 pp
Electric Utilities · contribution
+0.821 pp
Company participation
79%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2022 · 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 | $77.3bn | 0.268% | +0.016 pp | +0.136 pp | +21.9% | Yes |
| Southern Company → SO | United States | $68.7bn | 0.238% | +0.019 pp | +0.118 pp | +19.0% | Yes |
| Exelon → EXC | United States | $41.7bn | 0.145% | +0.020 pp | +0.091 pp | +61.2% | Yes |
| American Electric Power → AEP | United States | $45.7bn | 0.159% | +0.021 pp | +0.084 pp | +25.4% | Yes |
| Public Service Enterprise Group → PEG | United States | $32.5bn | 0.113% | +0.006 pp | +0.058 pp | +24.5% | Yes |
| Constellation Energy → CEG | United States | $15.0bn | 0.052% | +0.052 pp | +0.052 pp | +0.0% | Yes |
| WEC Energy Group → WEC | United States | $28.7bn | 0.099% | +0.007 pp | +0.049 pp | +16.1% | Yes |
| FirstEnergy → FE | United States | $23.9bn | 0.083% | +0.014 pp | +0.047 pp | +31.4% | Yes |
| Eversource Energy → ES | United States | $28.2bn | 0.098% | +0.002 pp | +0.043 pp | +5.9% | No |
| Edison International → EIX | United States | $24.1bn | 0.084% | -0.000 pp | +0.043 pp | +22.8% | Yes |
| Alliant Energy → LNT | United States | $14.6bn | 0.051% | +0.004 pp | +0.028 pp | +30.2% | Yes |
| PPL Corporation → PPL | United States | $19.2bn | 0.067% | -0.004 pp | +0.027 pp | +5.8% | No |
| Evergy → EVRG | United States | $14.3bn | 0.050% | +0.001 pp | +0.025 pp | +20.5% | No |
| Entergy → ETR | United States | $10.7bn | 0.037% | +0.003 pp | +0.020 pp | +25.7% | 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.