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
1.71%
Industry change · 12M
+0.00 pp
Electric Utilities · contribution
+0.002 pp
Company participation
67%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 |
|---|---|---|---|---|---|---|---|
| FirstEnergy → FE | United States | $15.4bn | 0.092% | +0.009 pp | +0.009 pp | -0.6% | Yes |
| PPL Corporation → PPL | United States | $19.9bn | 0.119% | -0.006 pp | -0.006 pp | -10.1% | No |
| Eversource Energy → ES | United States | $18.1bn | 0.108% | -0.006 pp | -0.006 pp | -9.7% | No |
| Public Service Enterprise Group → PEG | United States | $24.4bn | 0.146% | -0.003 pp | -0.003 pp | -6.6% | No |
| Duke Energy → DUK | United States | $52.7bn | 0.316% | +0.003 pp | +0.003 pp | -2.9% | Yes |
| WEC Energy Group → WEC | United States | $18.9bn | 0.113% | -0.002 pp | -0.002 pp | -6.0% | No |
| Exelon → EXC | United States | $25.5bn | 0.153% | +0.002 pp | +0.002 pp | -2.9% | Yes |
| Edison International → EIX | United States | $19.7bn | 0.118% | +0.002 pp | +0.002 pp | -3.1% | Yes |
| Southern Company → SO | United States | $43.4bn | 0.260% | +0.002 pp | +0.002 pp | -3.3% | Yes |
| Alliant Energy → LNT | United States | $8.9bn | 0.054% | +0.001 pp | +0.001 pp | -2.8% | Yes |
| Entergy → ETR | United States | $6.9bn | 0.041% | +0.001 pp | +0.001 pp | -2.5% | Yes |
| American Electric Power → AEP | United States | $32.3bn | 0.193% | +0.000 pp | +0.000 pp | -3.7% | 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.