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
Passenger Ground Transportation0.36%+0.36 ppAerospace & Defense2.20%-0.21 ppHeavy Electrical Equipment0.22%+0.20 ppAir Freight & Logistics0.42%-0.18 ppRail Transportation0.62%-0.16 ppDiversified Support Services0.37%+0.14 ppIndustrial Conglomerates0.58%-0.11 ppAgricultural & Farm Machinery0.26%-0.10 ppIndustrial Machinery & Supplies & Components1.10%-0.07 ppBuilding Products0.55%+0.07 ppHuman Resource & Employment Services0.40%-0.05 ppElectrical Components & Equipment0.62%-0.04 ppEnvironmental & Facilities Services0.46%-0.04 ppPassenger Airlines0.19%+0.04 ppConstruction Machinery & Heavy Transportation Equipment0.74%+0.03 ppTrading Companies & Distributors0.18%+0.03 ppConstruction & Engineering0.15%+0.02 ppResearch & Consulting Services0.17%-0.01 ppCargo Ground Transportation0.14%+0.01 ppData Processing & Outsourced Services0.06%-0.01 pp
3 · Sub-industry
Inside Diversified Support Services
Diversified Support Services · weight
0.37%
Industry change · 12M
+0.14 pp
Diversified Support Services · contribution
+0.137 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 2024 · 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 | $83.0bn | 0.195% | +0.161 pp | +0.151 pp | +63.8% | Yes |
| Copart → CPRT | United States | $49.6bn | 0.117% | +0.026 pp | -0.025 pp | +18.3% | Yes |
| Leidos → LDOS | United States | $24.4bn | 0.057% | +0.023 pp | +0.011 pp | +86.9% | 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.