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
Passenger Ground Transportation0.37%+0.37 ppAir Freight & Logistics0.43%-0.22 ppHeavy Electrical Equipment0.19%+0.16 ppRail Transportation0.64%-0.13 ppIndustrial Conglomerates0.59%-0.10 ppAgricultural & Farm Machinery0.27%-0.10 ppHuman Resource & Employment Services0.38%-0.09 ppElectrical Components & Equipment0.62%-0.08 ppBuilding Products0.58%+0.06 ppConstruction Machinery & Heavy Transportation Equipment0.74%-0.05 ppEnvironmental & Facilities Services0.46%+0.04 ppIndustrial Machinery & Supplies & Components1.10%-0.03 ppTrading Companies & Distributors0.17%+0.02 ppPassenger Airlines0.16%-0.02 ppResearch & Consulting Services0.17%-0.02 ppData Processing & Outsourced Services0.06%-0.01 ppAerospace & Defense2.29%+0.00 ppDiversified Support Services0.22%-0.00 ppConstruction & Engineering0.14%+0.00 ppCargo Ground Transportation0.14%+0.00 pp
3 · Sub-industry
Inside Electrical Components & Equipment
Electrical Components & Equipment · weight
0.62%
Industry change · 12M
-0.08 pp
Electrical Components & Equipment · contribution
-0.076 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 2024 · 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 | $30.5bn | 0.071% | +0.012 pp | -0.039 pp | -4.3% | Yes |
| Emerson Electric → EMR | United States | $62.6bn | 0.146% | +0.028 pp | -0.038 pp | +15.6% | Yes |
| Eaton Corporation → ETN | United States | $131.9bn | 0.307% | +0.072 pp | +0.023 pp | +57.5% | Yes |
| Ametek → AME | United States | $39.8bn | 0.093% | +0.020 pp | -0.021 pp | +17.0% | 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.