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 & Defense1.75%-0.56 ppRail Transportation0.56%-0.39 ppIndustrial Conglomerates0.51%-0.37 ppIndustrial Machinery & Supplies & Components0.77%-0.28 ppAir Freight & Logistics0.47%-0.28 ppConstruction Machinery & Heavy Transportation Equipment0.46%-0.19 ppHuman Resource & Employment Services0.31%-0.19 ppAgricultural & Farm Machinery0.25%-0.14 ppElectrical Components & Equipment0.44%-0.13 ppBuilding Products0.34%-0.13 ppEnvironmental & Facilities Services0.32%-0.13 ppPassenger Airlines0.14%-0.11 ppResearch & Consulting Services0.14%-0.05 ppHeavy Electrical Equipment0.02%-0.04 ppTrading Companies & Distributors0.09%-0.04 ppCargo Ground Transportation0.08%-0.03 ppConstruction & Engineering0.09%-0.02 ppData Processing & Outsourced Services0.04%-0.02 ppDiversified Support Services0.11%-0.00 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Diversified Support Services
Diversified Support Services · weight
0.11%
Industry change · 12M
-0.00 pp
Diversified Support Services · contribution
-0.005 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 |
|---|---|---|---|---|---|---|---|
| Copart → CPRT | United States | $20.9bn | 0.052% | -0.007 pp | +0.027 pp | +53.0% | No |
| Leidos → LDOS | United States | $10.7bn | 0.026% | -0.020 pp | -0.025 pp | -24.2% | No |
| Cintas → CTAS | United States | $12.0bn | 0.030% | -0.010 pp | -0.007 pp | +19.8% | 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.