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
Construction Machinery & Heavy Transportation Equipment1.03%+0.37 ppConstruction & Engineering0.38%+0.24 ppAerospace & Defense2.35%-0.23 ppHuman Resource & Employment Services0.21%-0.21 ppIndustrial Machinery & Supplies & Components0.80%-0.20 ppEnvironmental & Facilities Services0.33%-0.19 ppElectrical Components & Equipment0.80%+0.19 ppHeavy Electrical Equipment0.48%+0.17 ppDiversified Support Services0.20%-0.16 ppPassenger Ground Transportation0.25%-0.15 ppBuilding Products0.49%-0.13 ppResearch & Consulting Services0.07%-0.10 ppIndustrial Conglomerates0.52%-0.07 ppAgricultural & Farm Machinery0.25%-0.06 ppTrading Companies & Distributors0.20%+0.04 ppData Processing & Outsourced Services0.03%-0.03 ppAir Freight & Logistics0.34%+0.03 ppRail Transportation0.53%-0.03 ppPassenger Airlines0.19%+0.02 ppCargo Ground Transportation0.13%+0.02 pp
3 · Sub-industry
Inside Aerospace & Defense
Aerospace & Defense · weight
2.35%
Industry change · 12M
-0.23 pp
Aerospace & Defense · contribution
-0.226 pp
Company participation
67%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 2026 · 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 |
|---|---|---|---|---|---|---|---|
| Axon Enterprise → AXON | United States | $36.2bn | 0.063% | +0.003 pp | -0.070 pp | -40.2% | No |
| TransDigm Group → TDG | United States | $70.4bn | 0.122% | +0.021 pp | -0.065 pp | -8.4% | Yes |
| Lockheed Martin → LMT | United States | $122.3bn | 0.212% | +0.004 pp | -0.044 pp | +13.0% | No |
| Boeing → BA | United States | $182.2bn | 0.316% | +0.071 pp | -0.038 pp | +11.5% | Yes |
| Howmet Aerospace → HWM | United States | $103.3bn | 0.179% | +0.035 pp | +0.024 pp | +52.4% | Yes |
| Northrop Grumman → NOC | United States | $80.1bn | 0.139% | -0.002 pp | -0.019 pp | +18.1% | No |
| GE Aerospace → GE | United States | $337.8bn | 0.585% | +0.093 pp | -0.009 pp | +32.4% | Yes |
| General Dynamics → GD | United States | $93.8bn | 0.163% | +0.030 pp | -0.007 pp | +26.8% | Yes |
| RTX Corporation → RTX | United States | $241.9bn | 0.419% | +0.046 pp | +0.006 pp | +33.7% | Yes |
| Textron → TXT | United States | $16.0bn | 0.028% | +0.004 pp | -0.003 pp | +24.1% | Yes |
| L3Harris → LHX | United States | $58.7bn | 0.102% | +0.008 pp | -0.002 pp | +31.2% | Yes |
| Huntington Ingalls Industries → HII | United States | $12.1bn | 0.021% | -0.003 pp | +0.001 pp | +40.5% | 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.