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
Industrial Conglomerates0.69%-0.12 ppDiversified Support Services0.23%+0.12 ppIndustrial Machinery & Supplies & Components1.16%+0.11 ppAgricultural & Farm Machinery0.36%-0.07 ppHuman Resource & Employment Services0.44%-0.07 ppElectrical Components & Equipment0.67%+0.06 ppRail Transportation0.78%-0.06 ppPassenger Airlines0.15%-0.05 ppEnvironmental & Facilities Services0.50%+0.05 ppAir Freight & Logistics0.60%-0.05 ppConstruction Machinery & Heavy Transportation Equipment0.71%+0.04 ppTrading Companies & Distributors0.15%+0.02 ppAerospace & Defense2.42%+0.02 ppConstruction & Engineering0.13%+0.01 ppCargo Ground Transportation0.13%+0.01 ppBuilding Products0.48%+0.01 ppHeavy Electrical Equipment0.02%-0.01 ppResearch & Consulting Services0.18%+0.01 ppData Processing & Outsourced Services0.07%+0.01 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Trading Companies & Distributors
Trading Companies & Distributors · weight
0.15%
Industry change · 12M
+0.02 pp
Trading Companies & Distributors · contribution
+0.024 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 2023 · 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 |
|---|---|---|---|---|---|---|---|
| United Rentals → URI | United States | $27.5bn | 0.094% | +0.024 pp | +0.016 pp | +30.1% | Yes |
| Fastenal → FAST | United States | $16.7bn | 0.057% | +0.020 pp | +0.008 pp | +23.8% | 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.