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 & Defense2.40%+0.23 ppRail Transportation0.83%-0.19 ppAir Freight & Logistics0.64%-0.15 ppIndustrial Conglomerates0.82%-0.12 ppBuilding Products0.48%-0.10 ppHeavy Electrical Equipment0.03%-0.08 ppAgricultural & Farm Machinery0.42%+0.07 ppConstruction Machinery & Heavy Transportation Equipment0.67%+0.05 ppResearch & Consulting Services0.18%-0.05 ppIndustrial Machinery & Supplies & Components1.05%-0.04 ppHuman Resource & Employment Services0.51%+0.04 ppElectrical Components & Equipment0.60%-0.04 ppEnvironmental & Facilities Services0.45%+0.03 ppPassenger Airlines0.20%-0.02 ppTrading Companies & Distributors0.13%-0.02 ppCargo Ground Transportation0.12%-0.02 ppConstruction & Engineering0.12%+0.01 ppData Processing & Outsourced Services0.06%-0.01 ppDiversified Support Services0.11%-0.00 ppPassenger Ground Transportation0.00%+0.00 pp
3 · Sub-industry
Inside Electrical Components & Equipment
Electrical Components & Equipment · weight
0.60%
Industry change · 12M
-0.04 pp
Electrical Components & Equipment · contribution
-0.035 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 2022 · 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 | $29.5bn | 0.105% | +0.003 pp | -0.019 pp | -18.7% | Yes |
| Emerson Electric → EMR | United States | $51.2bn | 0.182% | -0.002 pp | -0.012 pp | -8.7% | Yes |
| Eaton Corporation → ETN | United States | $59.8bn | 0.212% | +0.009 pp | -0.007 pp | -7.0% | Yes |
| Ametek → AME | United States | $29.8bn | 0.106% | +0.008 pp | +0.003 pp | -1.4% | 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.