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 & Defense2.56%+0.47 ppConstruction Machinery & Heavy Transportation Equipment0.85%+0.14 ppHeavy Electrical Equipment0.36%+0.14 ppConstruction & Engineering0.27%+0.13 ppIndustrial Machinery & Supplies & Components0.92%-0.10 ppHuman Resource & Employment Services0.28%-0.10 ppBuilding Products0.50%-0.07 ppDiversified Support Services0.27%-0.07 ppAir Freight & Logistics0.32%-0.07 ppIndustrial Conglomerates0.52%-0.06 ppElectrical Components & Equipment0.57%-0.06 ppRail Transportation0.53%-0.05 ppResearch & Consulting Services0.11%-0.05 ppPassenger Ground Transportation0.33%+0.04 ppTrading Companies & Distributors0.19%+0.04 ppEnvironmental & Facilities Services0.41%-0.03 ppCargo Ground Transportation0.10%-0.02 ppAgricultural & Farm Machinery0.25%-0.01 ppData Processing & Outsourced Services0.05%-0.01 ppPassenger Airlines0.20%-0.01 pp
3 · Sub-industry
Inside Aerospace & Defense
Aerospace & Defense · weight
2.56%
Industry change · 12M
+0.47 pp
Aerospace & Defense · contribution
+0.466 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2025 · 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 | $324.9bn | 0.636% | -0.002 pp | +0.227 pp | +85.7% | Yes |
| RTX Corporation → RTX | United States | $245.9bn | 0.482% | +0.033 pp | +0.132 pp | +61.4% | Yes |
| Boeing → BA | United States | $165.0bn | 0.323% | -0.003 pp | +0.075 pp | +22.7% | No |
| Howmet Aerospace → HWM | United States | $82.4bn | 0.161% | +0.003 pp | +0.061 pp | +88.0% | Yes |
| Lockheed Martin → LMT | United States | $111.9bn | 0.219% | -0.014 pp | -0.042 pp | +2.5% | Yes |
| L3Harris → LHX | United States | $54.9bn | 0.108% | -0.007 pp | +0.017 pp | +42.3% | No |
| Axon Enterprise → AXON | United States | $44.8bn | 0.088% | -0.025 pp | -0.015 pp | -4.4% | No |
| TransDigm Group → TDG | United States | $74.9bn | 0.147% | -0.002 pp | -0.015 pp | +12.2% | No |
| General Dynamics → GD | United States | $90.9bn | 0.178% | -0.006 pp | +0.014 pp | +30.4% | No |
| Huntington Ingalls Industries → HII | United States | $13.3bn | 0.026% | +0.004 pp | +0.009 pp | +84.2% | Yes |
| Northrop Grumman → NOC | United States | $81.4bn | 0.159% | -0.015 pp | +0.004 pp | +23.6% | No |
| Textron → TXT | United States | $15.4bn | 0.030% | -0.000 pp | -0.002 pp | +14.1% | 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.