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 & Defense5.52%-1.24 ppHuman Resource & Employment Services0.57%+0.12 ppRail Transportation1.10%+0.12 ppIndustrial Machinery & Supplies & Components0.97%-0.11 ppAir Freight & Logistics0.82%-0.10 ppEnvironmental & Facilities Services0.45%+0.10 ppConstruction Machinery & Heavy Transportation Equipment0.72%-0.08 ppPassenger Airlines0.49%-0.08 ppIndustrial Conglomerates1.23%-0.07 ppData Processing & Outsourced Services0.07%+0.07 ppElectrical Components & Equipment0.67%-0.06 ppTrading Companies & Distributors0.08%-0.03 ppDiversified Support Services0.05%+0.02 ppAgricultural & Farm Machinery0.29%-0.02 ppCargo Ground Transportation0.06%-0.02 ppResearch & Consulting Services0.21%+0.01 ppBuilding Products0.45%-0.01 ppConstruction & Engineering0.08%+0.01 ppHeavy Electrical Equipment0.00%+0.00 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Environmental & Facilities Services
Environmental & Facilities Services · weight
0.45%
Industry change · 12M
+0.10 pp
Environmental & Facilities Services · contribution
+0.095 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2019 · 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 |
|---|---|---|---|---|---|---|---|
| Rollins, Inc. → ROL | United States | $9.1bn | 0.052% | +0.033 pp | +0.052 pp | +23.7% | Yes |
| Waste Management → WM | United States | $44.0bn | 0.253% | +0.117 pp | +0.029 pp | +26.1% | Yes |
| Republic Services → RSG | United States | $25.9bn | 0.149% | +0.065 pp | +0.014 pp | +23.8% | 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.