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
Aerospace & Defense2.44%-1.77 ppIndustrial Conglomerates0.83%-0.22 ppRail Transportation0.98%+0.14 ppBuilding Products0.46%-0.13 ppIndustrial Machinery & Supplies & Components1.03%-0.11 ppEnvironmental & Facilities Services0.47%+0.08 ppElectrical Components & Equipment0.57%-0.07 ppPassenger Airlines0.20%-0.07 ppHuman Resource & Employment Services0.50%+0.07 ppConstruction Machinery & Heavy Transportation Equipment0.61%-0.07 ppAir Freight & Logistics0.80%-0.06 ppHeavy Electrical Equipment0.05%-0.04 ppAgricultural & Farm Machinery0.36%-0.03 ppConstruction & Engineering0.12%+0.03 ppTrading Companies & Distributors0.12%-0.01 ppResearch & Consulting Services0.19%-0.01 ppCargo Ground Transportation0.12%+0.01 ppDiversified Support Services0.12%+0.00 ppData Processing & Outsourced Services0.06%-0.00 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Construction & Engineering
Construction & Engineering · weight
0.12%
Industry change · 12M
+0.03 pp
Construction & Engineering · contribution
+0.027 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2022 · 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 |
|---|---|---|---|---|---|---|---|
| Quanta Services → PWR | United States | $18.0bn | 0.070% | +0.007 pp | +0.025 pp | +38.7% | Yes |
| Jacobs Solutions → J | United States | $13.5bn | 0.053% | +0.003 pp | +0.002 pp | -4.1% | 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.