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 Cargo Ground Transportation
Cargo Ground Transportation · weight
0.11%
Industry change · 12M
+0.00 pp
Cargo Ground Transportation · contribution
+0.003 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 |
|---|---|---|---|---|---|---|---|
| Old Dominion → ODFL | United States | $32.6bn | 0.078% | -0.010 pp | +0.021 pp | -15.2% | No |
| J.B. Hunt → JBHT | United States | $13.0bn | 0.031% | -0.007 pp | -0.017 pp | -18.9% | 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.