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 Machinery & Supplies & Components0.72%-0.30 ppHuman Resource & Employment Services0.16%-0.24 ppAerospace & Defense2.04%-0.20 ppEnvironmental & Facilities Services0.30%-0.18 ppRail Transportation0.42%-0.17 ppIndustrial Conglomerates0.43%-0.16 ppDiversified Support Services0.19%-0.15 ppPassenger Ground Transportation0.21%-0.14 ppBuilding Products0.41%-0.14 ppConstruction & Engineering0.25%+0.13 ppElectrical Components & Equipment0.45%-0.13 ppHeavy Electrical Equipment0.34%+0.12 ppAir Freight & Logistics0.27%-0.10 ppResearch & Consulting Services0.07%-0.09 ppConstruction Machinery & Heavy Transportation Equipment0.74%+0.06 ppAgricultural & Farm Machinery0.23%-0.06 ppPassenger Airlines0.14%-0.06 ppData Processing & Outsourced Services0.03%-0.03 ppCargo Ground Transportation0.09%-0.03 ppTrading Companies & Distributors0.15%+0.00 pp
3 · Sub-industry
Inside Diversified Support Services
Diversified Support Services · weight
0.19%
Industry change · 12M
-0.15 pp
Diversified Support Services · contribution
-0.152 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2026 · 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 | $80.4bn | 0.110% | -0.036 pp | -0.077 pp | -2.2% | No |
| Copart → CPRT | United States | $36.9bn | 0.051% | -0.024 pp | -0.068 pp | -30.5% | No |
| Leidos → LDOS | United States | $22.1bn | 0.030% | -0.018 pp | -0.008 pp | +36.1% | 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.