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 Transportation0.47%+0.47 ppAerospace & Defense2.33%-0.18 ppAir Freight & Logistics0.52%-0.18 ppIndustrial Conglomerates0.59%-0.17 ppAgricultural & Farm Machinery0.29%-0.15 ppEnvironmental & Facilities Services0.52%+0.11 ppIndustrial Machinery & Supplies & Components1.26%+0.10 ppDiversified Support Services0.24%+0.10 ppElectrical Components & Equipment0.72%+0.07 ppConstruction Machinery & Heavy Transportation Equipment0.83%+0.07 ppHuman Resource & Employment Services0.42%-0.04 ppPassenger Airlines0.18%-0.04 ppTrading Companies & Distributors0.19%+0.03 ppRail Transportation0.82%-0.03 ppConstruction & Engineering0.14%+0.02 ppResearch & Consulting Services0.20%+0.02 ppBuilding Products0.54%+0.01 ppData Processing & Outsourced Services0.07%+0.01 ppHeavy Electrical Equipment0.02%-0.01 ppCargo Ground Transportation0.13%-0.00 pp
3 · Sub-industry
Inside Electrical Components & Equipment
Electrical Components & Equipment · weight
0.72%
Industry change · 12M
+0.07 pp
Electrical Components & Equipment · contribution
+0.074 pp
Company participation
75%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 |
|---|---|---|---|---|---|---|---|
| Eaton Corporation → ETN | United States | $115.5bn | 0.331% | +0.047 pp | +0.086 pp | +68.2% | Yes |
| Rockwell Automation → ROK | United States | $32.7bn | 0.094% | -0.005 pp | -0.025 pp | -1.6% | No |
| Emerson Electric → EMR | United States | $61.1bn | 0.175% | +0.017 pp | +0.009 pp | +32.1% | Yes |
| Ametek → AME | United States | $41.6bn | 0.119% | +0.008 pp | +0.005 pp | +28.1% | 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.