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
Industrial Machinery & Supplies & Components1.01%-0.24 ppAir Freight & Logistics0.32%-0.20 ppConstruction Machinery & Heavy Transportation Equipment0.64%-0.20 ppRail Transportation0.56%-0.20 ppElectrical Components & Equipment0.58%-0.17 ppDiversified Support Services0.39%+0.14 ppHeavy Electrical Equipment0.26%+0.11 ppAerospace & Defense2.45%-0.05 ppIndustrial Conglomerates0.58%-0.04 ppTrading Companies & Distributors0.15%-0.03 ppPassenger Airlines0.16%-0.03 ppAgricultural & Farm Machinery0.30%-0.01 ppConstruction & Engineering0.14%-0.01 ppHuman Resource & Employment Services0.42%+0.01 ppEnvironmental & Facilities Services0.54%-0.01 ppResearch & Consulting Services0.18%+0.01 ppPassenger Ground Transportation0.41%+0.01 ppCargo Ground Transportation0.11%+0.00 ppBuilding Products0.59%-0.00 ppData Processing & Outsourced Services0.07%+0.00 pp
3 · Sub-industry
Inside Electrical Components & Equipment
Electrical Components & Equipment · weight
0.58%
Industry change · 12M
-0.17 pp
Electrical Components & Equipment · contribution
-0.173 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2025 · 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 |
|---|---|---|---|---|---|---|---|
| Eaton Corporation → ETN | United States | $115.4bn | 0.277% | -0.010 pp | -0.091 pp | -6.3% | No |
| Emerson Electric → EMR | United States | $59.3bn | 0.142% | -0.022 pp | -0.036 pp | -0.7% | No |
| Ametek → AME | United States | $39.1bn | 0.094% | -0.001 pp | -0.023 pp | -2.3% | No |
| Rockwell Automation → ROK | United States | $28.0bn | 0.067% | -0.003 pp | -0.023 pp | -6.9% | 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.