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 & Defense3.13%-3.95 ppIndustrial Conglomerates0.67%-0.70 ppIndustrial Machinery & Supplies & Components0.51%-0.56 ppAir Freight & Logistics0.50%-0.48 ppConstruction Machinery & Heavy Transportation Equipment0.36%-0.47 ppRail Transportation0.59%-0.36 ppElectrical Components & Equipment0.37%-0.35 ppPassenger Airlines0.30%-0.25 ppBuilding Products0.23%-0.23 ppHuman Resource & Employment Services0.29%-0.16 ppAgricultural & Farm Machinery0.15%-0.16 ppEnvironmental & Facilities Services0.23%-0.12 ppResearch & Consulting Services0.11%-0.07 ppTrading Companies & Distributors0.05%-0.06 ppData Processing & Outsourced Services0.05%+0.05 ppCargo Ground Transportation0.04%-0.03 ppConstruction & Engineering0.05%-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 Aerospace & Defense
Aerospace & Defense · weight
3.13%
Industry change · 12M
-3.95 pp
Aerospace & Defense · contribution
-3.954 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 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 | $421.0bn | 1.427% | -1.884 pp | -2.406 pp | -35.9% | No |
| Boeing → BA | United States | $201.5bn | 0.683% | -0.511 pp | -0.521 pp | +1.6% | No |
| Lockheed Martin → LMT | United States | $83.6bn | 0.283% | -0.258 pp | -0.297 pp | -15.7% | No |
| General Dynamics → GD | United States | $51.1bn | 0.173% | -0.172 pp | -0.206 pp | -21.4% | No |
| Northrop Grumman → NOC | United States | $45.5bn | 0.154% | -0.151 pp | -0.184 pp | -22.2% | No |
| RTX Corporation → RTX | United States | $62.6bn | 0.212% | -0.186 pp | -0.183 pp | -8.5% | No |
| L3Harris → LHX | United States | $17.5bn | 0.059% | -0.055 pp | -0.049 pp | -5.6% | No |
| Textron → TXT | United States | $13.0bn | 0.044% | -0.055 pp | -0.044 pp | -8.5% | No |
| TransDigm Group → TDG | United States | $17.4bn | 0.059% | -0.056 pp | -0.035 pp | +4.2% | No |
| Huntington Ingalls Industries → HII | United States | $9.5bn | 0.032% | -0.028 pp | -0.029 pp | -7.2% | 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.