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 & Defense5.45%-1.10 ppIndustrial Conglomerates2.27%+1.06 ppAir Freight & Logistics0.72%-0.19 ppEnvironmental & Facilities Services0.46%+0.11 ppIndustrial Machinery & Supplies & Components0.92%-0.07 ppElectrical Components & Equipment0.63%-0.06 ppHuman Resource & Employment Services0.55%+0.04 ppPassenger Airlines0.47%-0.03 ppBuilding Products0.47%+0.03 ppCargo Ground Transportation0.05%-0.03 ppDiversified Support Services0.06%+0.03 ppResearch & Consulting Services0.22%+0.02 ppTrading Companies & Distributors0.08%-0.01 ppRail Transportation1.04%+0.01 ppAgricultural & Farm Machinery0.28%+0.01 ppConstruction & Engineering0.08%+0.01 ppConstruction Machinery & Heavy Transportation Equipment0.72%+0.00 ppData Processing & Outsourced Services0.08%-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
0.63%
Industry change · 12M
-0.06 pp
Electrical Components & Equipment · contribution
-0.063 pp
Company participation
75%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2019 · 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 | $41.0bn | 0.221% | -0.021 pp | -0.043 pp | -0.7% | Yes |
| Rockwell Automation → ROK | United States | $19.4bn | 0.105% | -0.016 pp | -0.022 pp | +0.7% | No |
| Ametek → AME | United States | $20.7bn | 0.112% | +0.003 pp | +0.010 pp | +26.8% | Yes |
| Eaton Corporation → ETN | United States | $35.2bn | 0.190% | -0.006 pp | -0.008 pp | +13.4% | 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.