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 & Defense2.71%-4.37 ppIndustrial Conglomerates0.69%-0.68 ppIndustrial Machinery & Supplies & Components0.55%-0.53 ppAir Freight & Logistics0.52%-0.46 ppConstruction Machinery & Heavy Transportation Equipment0.39%-0.44 ppRail Transportation0.60%-0.34 ppElectrical Components & Equipment0.38%-0.34 ppPassenger Airlines0.33%-0.22 ppBuilding Products0.25%-0.22 ppHuman Resource & Employment Services0.30%-0.15 ppAgricultural & Farm Machinery0.17%-0.14 ppEnvironmental & Facilities Services0.24%-0.11 ppResearch & Consulting Services0.11%-0.07 ppTrading Companies & Distributors0.05%-0.06 ppData Processing & Outsourced Services0.04%+0.04 ppCargo Ground Transportation0.04%-0.04 ppConstruction & Engineering0.04%-0.03 ppDiversified Support Services0.03%+0.00 ppHeavy Electrical Equipment0.00%+0.00 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Environmental & Facilities Services
Environmental & Facilities Services · weight
0.24%
Industry change · 12M
-0.11 pp
Environmental & Facilities Services · contribution
-0.114 pp
Company participation
33%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 2018 · 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 | $40.0bn | 0.133% | +0.007 pp | -0.086 pp | +8.3% | No |
| Republic Services → RSG | United States | $25.1bn | 0.083% | +0.006 pp | -0.048 pp | +14.2% | No |
| Rollins, Inc. → ROL | United States | $6.2bn | 0.020% | +0.020 pp | +0.020 pp | +30.3% | 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.