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 & Defense2.24%-1.78 ppIndustrial Conglomerates0.77%-0.20 ppBuilding Products0.47%-0.11 ppHuman Resource & Employment Services0.53%+0.09 ppEnvironmental & Facilities Services0.50%+0.08 ppPassenger Airlines0.18%-0.07 ppIndustrial Machinery & Supplies & Components1.02%-0.06 ppAir Freight & Logistics0.68%-0.05 ppElectrical Components & Equipment0.58%-0.05 ppHeavy Electrical Equipment0.04%-0.05 ppResearch & Consulting Services0.19%-0.03 ppAgricultural & Farm Machinery0.40%+0.03 ppConstruction Machinery & Heavy Transportation Equipment0.59%-0.02 ppTrading Companies & Distributors0.13%-0.01 ppConstruction & Engineering0.12%+0.01 ppRail Transportation0.90%+0.00 ppCargo Ground Transportation0.12%-0.00 ppData Processing & Outsourced Services0.07%-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
+0.011 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 | $18.2bn | 0.072% | +0.002 pp | +0.016 pp | +12.2% | Yes |
| Jacobs Solutions → J | United States | $11.5bn | 0.045% | -0.008 pp | -0.005 pp | -17.4% | 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.