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
2.21%
Industry change · 12M
+1.18 pp
Electric Utilities · contribution
+1.181 pp
Company participation
92%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 | $64.6bn | 0.343% | +0.033 pp | +0.202 pp | +48.6% | Yes |
| Duke Energy → DUK | United States | $69.8bn | 0.371% | +0.025 pp | +0.189 pp | +25.0% | Yes |
| American Electric Power → AEP | United States | $46.3bn | 0.246% | +0.012 pp | +0.134 pp | +36.6% | Yes |
| WEC Energy Group → WEC | United States | $30.0bn | 0.159% | +0.018 pp | +0.092 pp | +46.8% | Yes |
| Eversource Energy → ES | United States | $27.7bn | 0.147% | +0.017 pp | +0.085 pp | +43.2% | Yes |
| Exelon → EXC | United States | $33.5bn | 0.178% | -0.001 pp | +0.082 pp | +14.1% | No |
| Public Service Enterprise Group → PEG | United States | $31.4bn | 0.167% | +0.006 pp | +0.082 pp | +21.4% | Yes |
| FirstEnergy → FE | United States | $25.7bn | 0.136% | +0.014 pp | +0.079 pp | +34.7% | Yes |
| Edison International → EIX | United States | $24.6bn | 0.131% | +0.012 pp | +0.060 pp | +15.7% | Yes |
| PPL Corporation → PPL | United States | $22.7bn | 0.121% | +0.000 pp | +0.056 pp | +13.5% | Yes |
| Evergy → EVRG | United States | $15.7bn | 0.083% | +0.004 pp | +0.045 pp | +25.1% | Yes |
| Entergy → ETR | United States | $11.7bn | 0.062% | +0.009 pp | +0.039 pp | +50.4% | Yes |
| Alliant Energy → LNT | United States | $12.8bn | 0.068% | +0.005 pp | +0.036 pp | +30.6% | 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.