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 & Defense4.02%+4.02 ppIndustrial Machinery & Supplies & Components1.09%+1.08 ppIndustrial Conglomerates0.96%+0.96 ppRail Transportation0.89%+0.89 ppAir Freight & Logistics0.73%+0.73 ppElectrical Components & Equipment0.63%+0.63 ppConstruction Machinery & Heavy Transportation Equipment0.60%+0.60 ppBuilding Products0.58%+0.58 ppHuman Resource & Employment Services0.44%+0.44 ppEnvironmental & Facilities Services0.42%+0.42 ppAgricultural & Farm Machinery0.36%+0.36 ppPassenger Airlines0.26%+0.26 ppResearch & Consulting Services0.22%+0.22 ppTrading Companies & Distributors0.14%+0.14 ppCargo Ground Transportation0.12%+0.12 ppDiversified Support Services0.11%+0.11 ppConstruction & Engineering0.11%+0.11 ppHeavy Electrical Equipment0.09%+0.09 ppData Processing & Outsourced Services0.07%+0.07 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Environmental & Facilities Services
Environmental & Facilities Services · weight
0.42%
Industry change · 12M
+0.42 pp
Environmental & Facilities Services · contribution
+0.416 pp
Company participation
67%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 2021 · 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 | $62.9bn | 0.221% | +0.012 pp | +0.221 pp | +34.3% | Yes |
| Republic Services → RSG | United States | $38.2bn | 0.134% | +0.010 pp | +0.134 pp | +30.7% | Yes |
| Rollins, Inc. → ROL | United States | $17.4bn | 0.061% | +0.002 pp | +0.061 pp | -1.2% | 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.