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 & Defense2.75%-4.33 ppIndustrial Conglomerates0.68%-0.69 ppIndustrial Machinery & Supplies & Components0.53%-0.55 ppAir Freight & Logistics0.45%-0.53 ppConstruction Machinery & Heavy Transportation Equipment0.39%-0.44 ppRail Transportation0.57%-0.37 ppElectrical Components & Equipment0.36%-0.36 ppPassenger Airlines0.30%-0.25 ppBuilding Products0.23%-0.24 ppHuman Resource & Employment Services0.29%-0.16 ppAgricultural & Farm Machinery0.17%-0.14 ppEnvironmental & Facilities Services0.24%-0.11 ppResearch & Consulting Services0.10%-0.08 ppTrading Companies & Distributors0.04%-0.07 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 Aerospace & Defense
Aerospace & Defense · weight
2.75%
Industry change · 12M
-4.33 pp
Aerospace & Defense · contribution
-4.332 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 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 | $315.6bn | 1.128% | -0.370 pp | -2.705 pp | -51.9% | No |
| Boeing → BA | United States | $183.1bn | 0.655% | -0.026 pp | -0.549 pp | -7.2% | No |
| Lockheed Martin → LMT | United States | $74.5bn | 0.266% | -0.048 pp | -0.314 pp | -24.3% | No |
| General Dynamics → GD | United States | $46.6bn | 0.166% | -0.027 pp | -0.212 pp | -28.4% | No |
| RTX Corporation → RTX | United States | $53.7bn | 0.192% | -0.032 pp | -0.204 pp | -21.1% | No |
| Northrop Grumman → NOC | United States | $42.5bn | 0.152% | -0.024 pp | -0.186 pp | -27.0% | No |
| L3Harris → LHX | United States | $15.8bn | 0.057% | -0.007 pp | -0.051 pp | -14.1% | No |
| Textron → TXT | United States | $11.2bn | 0.040% | -0.017 pp | -0.048 pp | -21.5% | No |
| Huntington Ingalls Industries → HII | United States | $8.2bn | 0.029% | -0.006 pp | -0.032 pp | -18.8% | No |
| TransDigm Group → TDG | United States | $17.9bn | 0.064% | +0.002 pp | -0.030 pp | +7.3% | 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.