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 & Defense4.00%-1.54 ppPassenger Airlines0.22%-0.28 ppRail Transportation0.95%-0.17 ppAir Freight & Logistics0.65%-0.13 ppBuilding Products0.37%-0.09 ppDiversified Support Services0.14%+0.08 ppConstruction Machinery & Heavy Transportation Equipment0.64%-0.08 ppHuman Resource & Employment Services0.49%-0.08 ppElectrical Components & Equipment0.61%-0.06 ppAgricultural & Farm Machinery0.25%-0.04 ppCargo Ground Transportation0.09%+0.04 ppEnvironmental & Facilities Services0.43%-0.02 ppResearch & Consulting Services0.23%+0.02 ppTrading Companies & Distributors0.11%+0.02 ppIndustrial Conglomerates1.21%+0.01 ppIndustrial Machinery & Supplies & Components0.98%-0.00 ppConstruction & Engineering0.08%-0.00 ppData Processing & Outsourced Services0.07%-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
0.14%
Industry change · 12M
+0.08 pp
Diversified Support Services · contribution
+0.084 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2020 · 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 |
|---|---|---|---|---|---|---|---|
| Leidos → LDOS | United States | $14.0bn | 0.078% | +0.008 pp | +0.078 pp | +36.6% | Yes |
| Copart → CPRT | United States | $4.7bn | 0.026% | -0.003 pp | +0.005 pp | +19.0% | Yes |
| Cintas → CTAS | United States | $5.8bn | 0.032% | -0.003 pp | +0.001 pp | +3.2% | 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.