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 & Defense6.55%-0.53 ppIndustrial Conglomerates1.21%-0.16 ppConstruction Machinery & Heavy Transportation Equipment0.71%-0.12 ppRail Transportation1.03%+0.09 ppIndustrial Machinery & Supplies & Components0.99%-0.09 ppData Processing & Outsourced Services0.08%+0.08 ppAir Freight & Logistics0.90%-0.08 ppHuman Resource & Employment Services0.51%+0.05 ppPassenger Airlines0.51%-0.04 ppBuilding Products0.43%-0.03 ppAgricultural & Farm Machinery0.28%-0.03 ppElectrical Components & Equipment0.69%-0.03 ppResearch & Consulting Services0.20%+0.02 ppTrading Companies & Distributors0.10%-0.01 ppCargo Ground Transportation0.08%+0.01 ppDiversified Support Services0.03%+0.00 ppConstruction & Engineering0.07%+0.00 ppEnvironmental & Facilities Services0.35%-0.00 ppHeavy Electrical Equipment0.00%+0.00 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Electrical Components & Equipment
Electrical Components & Equipment · weight
0.69%
Industry change · 12M
-0.03 pp
Electrical Components & Equipment · contribution
-0.029 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 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 |
|---|---|---|---|---|---|---|---|
| Rockwell Automation → ROK | United States | $20.9bn | 0.127% | -0.010 pp | -0.017 pp | -14.9% | No |
| Eaton Corporation → ETN | United States | $32.7bn | 0.198% | -0.018 pp | -0.013 pp | -9.4% | No |
| Ametek → AME | United States | $16.7bn | 0.101% | -0.006 pp | +0.001 pp | -5.1% | No |
| Emerson Electric → EMR | United States | $43.6bn | 0.264% | -0.002 pp | -0.000 pp | -3.0% | 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.