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 & Defense2.70%+0.50 ppConstruction Machinery & Heavy Transportation Equipment0.94%+0.22 ppConstruction & Engineering0.30%+0.17 ppHeavy Electrical Equipment0.39%+0.15 ppHuman Resource & Employment Services0.26%-0.13 ppIndustrial Machinery & Supplies & Components0.95%-0.11 ppDiversified Support Services0.27%-0.08 ppRail Transportation0.53%-0.08 ppResearch & Consulting Services0.11%-0.06 ppEnvironmental & Facilities Services0.40%-0.05 ppIndustrial Conglomerates0.55%-0.04 ppBuilding Products0.51%-0.04 ppTrading Companies & Distributors0.19%+0.03 ppPassenger Airlines0.19%-0.02 ppCargo Ground Transportation0.11%-0.02 ppData Processing & Outsourced Services0.04%-0.02 ppAgricultural & Farm Machinery0.27%-0.01 ppAir Freight & Logistics0.35%-0.01 ppElectrical Components & Equipment0.61%-0.01 ppPassenger Ground Transportation0.32%+0.01 pp
3 · Sub-industry
Inside Aerospace & Defense
Aerospace & Defense · weight
2.70%
Industry change · 12M
+0.50 pp
Aerospace & Defense · contribution
+0.499 pp
Company participation
83%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 |
|---|---|---|---|---|---|---|---|
| RTX Corporation → RTX | United States | $269.4bn | 0.515% | +0.047 pp | +0.134 pp | +58.7% | Yes |
| GE Aerospace → GE | United States | $321.8bn | 0.616% | -0.023 pp | +0.126 pp | +51.6% | No |
| Boeing → BA | United States | $183.6bn | 0.351% | +0.052 pp | +0.109 pp | +32.4% | Yes |
| Howmet Aerospace → HWM | United States | $83.7bn | 0.160% | -0.002 pp | +0.046 pp | +64.8% | Yes |
| Axon Enterprise → AXON | United States | $38.2bn | 0.073% | -0.040 pp | -0.038 pp | -25.9% | No |
| Lockheed Martin → LMT | United States | $145.9bn | 0.279% | +0.056 pp | +0.037 pp | +41.0% | Yes |
| L3Harris → LHX | United States | $64.1bn | 0.123% | +0.017 pp | +0.033 pp | +64.8% | Yes |
| Northrop Grumman → NOC | United States | $98.2bn | 0.188% | +0.025 pp | +0.031 pp | +44.5% | Yes |
| General Dynamics → GD | United States | $94.9bn | 0.182% | -0.001 pp | +0.025 pp | +39.3% | Yes |
| TransDigm Group → TDG | United States | $80.4bn | 0.154% | +0.009 pp | -0.015 pp | +12.7% | Yes |
| Huntington Ingalls Industries → HII | United States | $16.5bn | 0.032% | +0.007 pp | +0.014 pp | +118.2% | Yes |
| Textron → TXT | United States | $15.5bn | 0.030% | +0.002 pp | -0.002 pp | +15.2% | 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.