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
2.18%
Industry change · 12M
+1.13 pp
Electric Utilities · contribution
+1.131 pp
Company participation
85%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 |
|---|---|---|---|---|---|---|---|
| Southern Company → SO | United States | $60.9bn | 0.331% | +0.007 pp | +0.188 pp | +39.5% | Yes |
| Duke Energy → DUK | United States | $67.6bn | 0.367% | +0.005 pp | +0.181 pp | +19.1% | Yes |
| American Electric Power → AEP | United States | $45.0bn | 0.245% | -0.003 pp | +0.131 pp | +31.3% | Yes |
| WEC Energy Group → WEC | United States | $30.2bn | 0.164% | +0.016 pp | +0.095 pp | +46.0% | Yes |
| Exelon → EXC | United States | $32.8bn | 0.178% | -0.016 pp | +0.081 pp | +11.5% | No |
| Public Service Enterprise Group → PEG | United States | $30.6bn | 0.166% | -0.007 pp | +0.081 pp | +19.3% | Yes |
| Eversource Energy → ES | United States | $25.9bn | 0.141% | +0.005 pp | +0.077 pp | +32.3% | Yes |
| FirstEnergy → FE | United States | $24.5bn | 0.133% | +0.005 pp | +0.074 pp | +27.7% | Yes |
| Edison International → EIX | United States | $23.5bn | 0.128% | +0.015 pp | +0.059 pp | +14.3% | Yes |
| PPL Corporation → PPL | United States | $21.3bn | 0.116% | -0.009 pp | +0.049 pp | +4.8% | No |
| Evergy → EVRG | United States | $15.3bn | 0.083% | +0.001 pp | +0.043 pp | +17.6% | Yes |
| Entergy → ETR | United States | $11.2bn | 0.061% | +0.007 pp | +0.037 pp | +40.3% | Yes |
| Alliant Energy → LNT | United States | $12.5bn | 0.068% | +0.002 pp | +0.035 pp | +26.2% | 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.