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 & Defense2.46%+0.32 ppIndustrial Machinery & Supplies & Components0.91%-0.20 ppDiversified Support Services0.27%-0.12 ppHuman Resource & Employment Services0.28%-0.11 ppHeavy Electrical Equipment0.34%+0.11 ppAir Freight & Logistics0.31%-0.10 ppRail Transportation0.53%-0.09 ppConstruction Machinery & Heavy Transportation Equipment0.84%+0.09 ppElectrical Components & Equipment0.59%-0.08 ppConstruction & Engineering0.22%+0.07 ppCargo Ground Transportation0.09%-0.06 ppIndustrial Conglomerates0.53%-0.06 ppEnvironmental & Facilities Services0.41%-0.05 ppResearch & Consulting Services0.11%-0.05 ppBuilding Products0.51%-0.05 ppAgricultural & Farm Machinery0.25%-0.03 ppPassenger Ground Transportation0.36%+0.02 ppPassenger Airlines0.18%-0.02 ppTrading Companies & Distributors0.19%+0.01 ppData Processing & Outsourced Services0.05%-0.01 pp
3 · Sub-industry
Inside Environmental & Facilities Services
Environmental & Facilities Services · weight
0.41%
Industry change · 12M
-0.05 pp
Environmental & Facilities Services · contribution
-0.054 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 2025 · 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 |
|---|---|---|---|---|---|---|---|
| Waste Management → WM | United States | $87.8bn | 0.172% | -0.017 pp | -0.030 pp | -3.2% | No |
| Republic Services → RSG | United States | $67.2bn | 0.132% | -0.019 pp | -0.019 pp | +0.5% | No |
| Veralto → VLTO | United States | $25.1bn | 0.049% | -0.005 pp | -0.010 pp | -6.0% | No |
| Rollins, Inc. → ROL | United States | $29.8bn | 0.059% | +0.002 pp | +0.005 pp | +23.6% | 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.