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 Industrials
Construction Machinery & Heavy Transportation Equipment1.02%+0.30 ppConstruction & Engineering0.37%+0.21 ppIndustrial Conglomerates0.39%-0.15 ppPassenger Ground Transportation0.25%-0.14 ppElectrical Components & Equipment0.78%+0.12 ppEnvironmental & Facilities Services0.34%-0.12 ppHuman Resource & Employment Services0.26%-0.12 ppDiversified Support Services0.22%-0.11 ppBuilding Products0.50%-0.09 ppHeavy Electrical Equipment0.48%+0.08 ppIndustrial Machinery & Supplies & Components0.89%-0.07 ppResearch & Consulting Services0.08%-0.06 ppAerospace & Defense2.54%-0.05 ppRail Transportation0.60%+0.05 ppAir Freight & Logistics0.33%+0.04 ppPassenger Airlines0.21%+0.04 ppData Processing & Outsourced Services0.03%-0.03 ppCargo Ground Transportation0.12%+0.03 ppAgricultural & Farm Machinery0.28%-0.02 ppTrading Companies & Distributors0.21%-0.02 pp
3 · Sub-industry
Inside Heavy Electrical Equipment
Heavy Electrical Equipment · weight
0.48%
Industry change · 12M
+0.08 pp
Heavy Electrical Equipment · contribution
+0.077 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 2026 · 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 |
|---|---|---|---|---|---|---|---|
| GE Vernova → GEV | United States | $263.7bn | 0.460% | +0.065 pp | +0.081 pp | +50.3% | Yes |
| Generac → GNRC | United States | $11.6bn | 0.020% | -0.000 pp | -0.004 pp | +1.2% | 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.