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 & Defense6.76%-0.32 ppIndustrial Conglomerates1.30%-0.07 ppAir Freight & Logistics0.92%-0.06 ppRail Transportation0.98%+0.04 ppConstruction Machinery & Heavy Transportation Equipment0.80%-0.03 ppPassenger Airlines0.57%+0.01 ppResearch & Consulting Services0.19%+0.01 ppEnvironmental & Facilities Services0.36%+0.01 ppHuman Resource & Employment Services0.44%-0.01 ppBuilding Products0.46%-0.01 ppElectrical Components & Equipment0.73%+0.01 ppTrading Companies & Distributors0.11%+0.00 ppCargo Ground Transportation0.08%+0.00 ppAgricultural & Farm Machinery0.31%+0.00 ppDiversified Support Services0.03%+0.00 ppConstruction & Engineering0.07%+0.00 ppIndustrial Machinery & Supplies & Components1.08%+0.00 ppData Processing & Outsourced Services0.00%+0.00 ppHeavy Electrical Equipment0.00%+0.00 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Diversified Support Services
Diversified Support Services · weight
0.03%
Industry change · 12M
+0.00 pp
Diversified Support Services · contribution
+0.002 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2018 · 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 |
|---|---|---|---|---|---|---|---|
| Cintas → CTAS | United States | $4.5bn | 0.028% | +0.002 pp | +0.002 pp | +1.3% | 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.