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
1.86%
Industry change · 12M
+0.15 pp
Electric Utilities · contribution
+0.149 pp
Company participation
92%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2018 · 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 |
|---|---|---|---|---|---|---|---|
| Exelon → EXC | United States | $29.3bn | 0.178% | +0.013 pp | +0.027 pp | +12.6% | Yes |
| Southern Company → SO | United States | $46.8bn | 0.284% | +0.008 pp | +0.026 pp | +5.5% | Yes |
| Duke Energy → DUK | United States | $55.4bn | 0.336% | +0.004 pp | +0.023 pp | +3.1% | Yes |
| FirstEnergy → FE | United States | $17.1bn | 0.104% | +0.005 pp | +0.020 pp | +11.6% | Yes |
| Public Service Enterprise Group → PEG | United States | $27.4bn | 0.166% | +0.010 pp | +0.016 pp | +6.3% | Yes |
| American Electric Power → AEP | United States | $34.1bn | 0.207% | -0.000 pp | +0.014 pp | +2.6% | Yes |
| Edison International → EIX | United States | $20.6bn | 0.125% | -0.002 pp | +0.009 pp | +3.1% | Yes |
| WEC Energy Group → WEC | United States | $20.4bn | 0.124% | +0.002 pp | +0.008 pp | +2.4% | Yes |
| Alliant Energy → LNT | United States | $9.8bn | 0.059% | +0.001 pp | +0.007 pp | +7.3% | Yes |
| PPL Corporation → PPL | United States | $20.0bn | 0.121% | +0.001 pp | -0.004 pp | -7.6% | Yes |
| Entergy → ETR | United States | $7.3bn | 0.044% | +0.001 pp | +0.004 pp | +5.1% | Yes |
| Eversource Energy → ES | United States | $18.6bn | 0.113% | -0.002 pp | -0.001 pp | -5.4% | 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.