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 & Defense4.00%+4.00 ppIndustrial Machinery & Supplies & Components1.14%+1.14 ppIndustrial Conglomerates1.05%+1.05 ppRail Transportation0.96%+0.96 ppAir Freight & Logistics0.79%+0.79 ppElectrical Components & Equipment0.66%+0.66 ppConstruction Machinery & Heavy Transportation Equipment0.63%+0.62 ppBuilding Products0.62%+0.62 ppHuman Resource & Employment Services0.45%+0.45 ppEnvironmental & Facilities Services0.41%+0.41 ppAgricultural & Farm Machinery0.39%+0.39 ppPassenger Airlines0.24%+0.24 ppResearch & Consulting Services0.21%+0.21 ppTrading Companies & Distributors0.14%+0.14 ppDiversified Support Services0.12%+0.12 ppCargo Ground Transportation0.11%+0.11 ppConstruction & Engineering0.09%+0.09 ppHeavy Electrical Equipment0.09%+0.09 ppData Processing & Outsourced Services0.07%+0.07 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Construction & Engineering
Construction & Engineering · weight
0.09%
Industry change · 12M
+0.09 pp
Construction & Engineering · contribution
+0.093 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 2021 · 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 |
|---|---|---|---|---|---|---|---|
| Jacobs Solutions → J | United States | $14.6bn | 0.050% | -0.002 pp | +0.050 pp | +59.6% | Yes |
| Quanta Services → PWR | United States | $12.7bn | 0.043% | -0.005 pp | +0.043 pp | +128.1% | 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.