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 & Defense2.06%-1.97 ppIndustrial Conglomerates0.90%-0.31 ppRail Transportation1.02%+0.11 ppConstruction Machinery & Heavy Transportation Equipment0.58%-0.09 ppBuilding Products0.60%+0.07 ppHeavy Electrical Equipment0.07%+0.07 ppPassenger Airlines0.21%-0.06 ppHuman Resource & Employment Services0.49%+0.05 ppIndustrial Machinery & Supplies & Components1.11%-0.04 ppAir Freight & Logistics0.78%-0.04 ppEnvironmental & Facilities Services0.42%+0.04 ppCargo Ground Transportation0.13%+0.03 ppDiversified Support Services0.11%-0.02 ppElectrical Components & Equipment0.64%+0.02 ppConstruction & Engineering0.10%+0.01 ppTrading Companies & Distributors0.14%+0.01 ppAgricultural & Farm Machinery0.34%-0.00 ppData Processing & Outsourced Services0.07%-0.00 ppResearch & Consulting Services0.23%+0.00 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Passenger Airlines
Passenger Airlines · weight
0.21%
Industry change · 12M
-0.06 pp
Passenger Airlines · contribution
-0.059 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 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 |
|---|---|---|---|---|---|---|---|
| Southwest Airlines → LUV | United States | $25.4bn | 0.081% | -0.026 pp | -0.030 pp | -8.1% | No |
| Delta Air Lines → DAL | United States | $25.0bn | 0.080% | -0.016 pp | -0.024 pp | -2.8% | No |
| United Airlines Holdings → UAL | United States | $14.2bn | 0.045% | -0.009 pp | -0.006 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.