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 Equipment0.79%+0.20 ppRail Transportation0.77%-0.13 ppElectrical Components & Equipment0.69%+0.11 ppIndustrial Machinery & Supplies & Components1.13%+0.11 ppDiversified Support Services0.22%+0.11 ppEnvironmental & Facilities Services0.42%-0.08 ppIndustrial Conglomerates0.69%-0.08 ppHuman Resource & Employment Services0.47%-0.06 ppBuilding Products0.52%+0.05 ppAerospace & Defense2.28%+0.04 ppAir Freight & Logistics0.64%-0.04 ppAgricultural & Farm Machinery0.36%-0.03 ppTrading Companies & Distributors0.15%+0.03 ppHeavy Electrical Equipment0.02%-0.02 ppConstruction & Engineering0.14%+0.02 ppCargo Ground Transportation0.14%+0.02 ppPassenger Airlines0.18%-0.00 ppData Processing & Outsourced Services0.07%+0.00 ppResearch & Consulting Services0.19%+0.00 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Aerospace & Defense
Aerospace & Defense · weight
2.28%
Industry change · 12M
+0.04 pp
Aerospace & Defense · contribution
+0.039 pp
Company participation
92%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 2023 · 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 | $96.0bn | 0.321% | +0.100 pp | +0.154 pp | +129.5% | Yes |
| RTX Corporation → RTX | United States | $104.8bn | 0.350% | +0.019 pp | -0.125 pp | -9.9% | No |
| Boeing → BA | United States | $115.6bn | 0.386% | +0.092 pp | +0.104 pp | +58.3% | Yes |
| Northrop Grumman → NOC | United States | $66.6bn | 0.222% | +0.062 pp | -0.064 pp | -4.9% | Yes |
| Lockheed Martin → LMT | United States | $103.0bn | 0.344% | +0.074 pp | -0.059 pp | +8.6% | Yes |
| Axon Enterprise → AXON | United States | $14.9bn | 0.050% | +0.016 pp | +0.050 pp | +71.9% | Yes |
| L3Harris → LHX | United States | $32.9bn | 0.110% | +0.024 pp | -0.046 pp | -14.2% | Yes |
| TransDigm Group → TDG | United States | $46.5bn | 0.155% | +0.042 pp | +0.044 pp | +60.7% | Yes |
| General Dynamics → GD | United States | $60.3bn | 0.201% | +0.065 pp | -0.027 pp | +6.6% | Yes |
| Howmet Aerospace → HWM | United States | $19.1bn | 0.064% | +0.016 pp | +0.013 pp | +50.1% | Yes |
| Huntington Ingalls Industries → HII | United States | $8.2bn | 0.027% | +0.006 pp | -0.008 pp | -5.5% | Yes |
| Textron → TXT | United States | $15.5bn | 0.052% | +0.020 pp | +0.003 pp | +34.3% | 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.