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
Passenger Ground Transportation0.47%+0.47 ppAerospace & Defense2.33%-0.18 ppAir Freight & Logistics0.52%-0.18 ppIndustrial Conglomerates0.59%-0.17 ppAgricultural & Farm Machinery0.29%-0.15 ppEnvironmental & Facilities Services0.52%+0.11 ppIndustrial Machinery & Supplies & Components1.26%+0.10 ppDiversified Support Services0.24%+0.10 ppElectrical Components & Equipment0.72%+0.07 ppConstruction Machinery & Heavy Transportation Equipment0.83%+0.07 ppHuman Resource & Employment Services0.42%-0.04 ppPassenger Airlines0.18%-0.04 ppTrading Companies & Distributors0.19%+0.03 ppRail Transportation0.82%-0.03 ppConstruction & Engineering0.14%+0.02 ppResearch & Consulting Services0.20%+0.02 ppBuilding Products0.54%+0.01 ppData Processing & Outsourced Services0.07%+0.01 ppHeavy Electrical Equipment0.02%-0.01 ppCargo Ground Transportation0.13%-0.00 pp
3 · Sub-industry
Inside Construction & Engineering
Construction & Engineering · weight
0.14%
Industry change · 12M
+0.02 pp
Construction & Engineering · contribution
+0.019 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2024 · 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 | $35.2bn | 0.101% | +0.016 pp | +0.019 pp | +49.9% | Yes |
| Jacobs Solutions → J | United States | $15.2bn | 0.044% | +0.002 pp | -0.000 pp | +23.7% | 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.