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 & Defense2.70%+0.50 ppConstruction Machinery & Heavy Transportation Equipment0.94%+0.22 ppConstruction & Engineering0.30%+0.17 ppHeavy Electrical Equipment0.39%+0.15 ppHuman Resource & Employment Services0.26%-0.13 ppIndustrial Machinery & Supplies & Components0.95%-0.11 ppDiversified Support Services0.27%-0.08 ppRail Transportation0.53%-0.08 ppResearch & Consulting Services0.11%-0.06 ppEnvironmental & Facilities Services0.40%-0.05 ppIndustrial Conglomerates0.55%-0.04 ppBuilding Products0.51%-0.04 ppTrading Companies & Distributors0.19%+0.03 ppPassenger Airlines0.19%-0.02 ppCargo Ground Transportation0.11%-0.02 ppData Processing & Outsourced Services0.04%-0.02 ppAgricultural & Farm Machinery0.27%-0.01 ppAir Freight & Logistics0.35%-0.01 ppElectrical Components & Equipment0.61%-0.01 ppPassenger Ground Transportation0.32%+0.01 pp
3 · Sub-industry
Inside Environmental & Facilities Services
Environmental & Facilities Services · weight
0.40%
Industry change · 12M
-0.05 pp
Environmental & Facilities Services · contribution
-0.053 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 |
|---|---|---|---|---|---|---|---|
| Waste Management → WM | United States | $89.5bn | 0.171% | +0.014 pp | -0.025 pp | +2.4% | No |
| Republic Services → RSG | United States | $66.6bn | 0.127% | +0.001 pp | -0.024 pp | +0.2% | No |
| Veralto → VLTO | United States | $24.6bn | 0.047% | -0.001 pp | -0.010 pp | -3.8% | No |
| Rollins, Inc. → ROL | United States | $30.7bn | 0.059% | +0.004 pp | +0.005 pp | +29.5% | 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.