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 & Defense6.81%-0.27 ppIndustrial Conglomerates1.23%-0.14 ppRail Transportation1.04%+0.10 ppIndustrial Machinery & Supplies & Components1.01%-0.06 ppConstruction Machinery & Heavy Transportation Equipment0.78%-0.05 ppHuman Resource & Employment Services0.49%+0.04 ppBuilding Products0.43%-0.03 ppPassenger Airlines0.53%-0.02 ppAgricultural & Farm Machinery0.29%-0.01 ppResearch & Consulting Services0.19%+0.01 ppCargo Ground Transportation0.09%+0.01 ppElectrical Components & Equipment0.71%-0.01 ppConstruction & Engineering0.08%+0.01 ppTrading Companies & Distributors0.10%-0.01 ppDiversified Support Services0.03%+0.00 ppAir Freight & Logistics0.98%+0.00 ppEnvironmental & Facilities Services0.35%+0.00 ppData Processing & Outsourced Services0.00%+0.00 ppHeavy Electrical Equipment0.00%+0.00 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Aerospace & Defense
Aerospace & Defense · weight
6.81%
Industry change · 12M
-0.27 pp
Aerospace & Defense · contribution
-0.267 pp
Company participation
30%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 |
|---|---|---|---|---|---|---|---|
| GE Aerospace → GE | United States | $586.1bn | 3.556% | +0.037 pp | -0.277 pp | -12.2% | No |
| Boeing → BA | United States | $205.2bn | 1.245% | -0.033 pp | +0.041 pp | +0.4% | Yes |
| Lockheed Martin → LMT | United States | $89.8bn | 0.545% | -0.058 pp | -0.035 pp | -10.3% | No |
| General Dynamics → GD | United States | $59.9bn | 0.364% | -0.032 pp | -0.015 pp | -8.9% | No |
| Textron → TXT | United States | $17.0bn | 0.103% | +0.010 pp | +0.015 pp | +13.5% | Yes |
| RTX Corporation → RTX | United States | $62.8bn | 0.381% | -0.025 pp | -0.014 pp | -8.5% | No |
| TransDigm Group → TDG | United States | $17.5bn | 0.106% | +0.016 pp | +0.012 pp | +5.4% | Yes |
| Northrop Grumman → NOC | United States | $57.1bn | 0.346% | -0.019 pp | +0.008 pp | -3.6% | No |
| Huntington Ingalls Industries → HII | United States | $9.8bn | 0.060% | -0.011 pp | -0.002 pp | -6.4% | No |
| L3Harris → LHX | United States | $17.9bn | 0.108% | -0.003 pp | +0.000 pp | -4.9% | 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.