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 & Defense2.06%-2.04 ppIndustrial Conglomerates0.90%-0.30 ppAir Freight & Logistics0.76%-0.14 ppConstruction Machinery & Heavy Transportation Equipment0.58%-0.11 ppIndustrial Machinery & Supplies & Components1.11%-0.11 ppHeavy Electrical Equipment0.09%+0.09 ppPassenger Airlines0.21%-0.07 ppRail Transportation0.99%+0.05 ppBuilding Products0.60%+0.05 ppEnvironmental & Facilities Services0.42%+0.03 ppCargo Ground Transportation0.14%+0.03 ppDiversified Support Services0.11%-0.02 ppConstruction & Engineering0.11%+0.02 ppHuman Resource & Employment Services0.47%+0.02 ppResearch & Consulting Services0.24%+0.01 ppAgricultural & Farm Machinery0.36%+0.01 ppTrading Companies & Distributors0.14%+0.01 ppElectrical Components & Equipment0.63%-0.01 ppData Processing & Outsourced Services0.07%-0.01 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Electrical Components & Equipment
Electrical Components & Equipment · weight
0.63%
Industry change · 12M
-0.01 pp
Electrical Components & Equipment · contribution
-0.009 pp
Company participation
75%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 2021 · 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 |
|---|---|---|---|---|---|---|---|
| Emerson Electric → EMR | United States | $52.3bn | 0.177% | -0.034 pp | -0.019 pp | +16.8% | No |
| Eaton Corporation → ETN | United States | $64.6bn | 0.218% | -0.006 pp | +0.013 pp | +36.5% | Yes |
| Ametek → AME | United States | $31.6bn | 0.107% | +0.002 pp | -0.009 pp | +15.9% | Yes |
| Rockwell Automation → ROK | United States | $39.0bn | 0.132% | +0.005 pp | +0.006 pp | +33.6% | 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.