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 & Defense2.31%-2.10 ppIndustrial Conglomerates0.88%-0.24 ppAir Freight & Logistics0.75%-0.16 ppIndustrial Machinery & Supplies & Components1.05%-0.13 ppBuilding Products0.47%-0.12 ppConstruction Machinery & Heavy Transportation Equipment0.66%-0.08 ppRail Transportation0.95%+0.07 ppHuman Resource & Employment Services0.50%+0.07 ppPassenger Airlines0.25%-0.06 ppElectrical Components & Equipment0.58%-0.06 ppEnvironmental & Facilities Services0.45%+0.05 ppHeavy Electrical Equipment0.06%-0.02 ppResearch & Consulting Services0.19%-0.01 ppConstruction & Engineering0.12%+0.01 ppAgricultural & Farm Machinery0.39%-0.01 ppTrading Companies & Distributors0.13%-0.01 ppData Processing & Outsourced Services0.06%-0.00 ppCargo Ground Transportation0.12%-0.00 ppDiversified Support Services0.11%-0.00 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Construction & Engineering
Construction & Engineering · weight
0.12%
Industry change · 12M
+0.01 pp
Construction & Engineering · contribution
+0.013 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 | $17.1bn | 0.062% | +0.008 pp | +0.014 pp | +25.1% | Yes |
| Jacobs Solutions → J | United States | $14.9bn | 0.054% | +0.008 pp | -0.001 pp | -0.7% | 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.