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

Universe›Industrials›Rail Transportation›Rail Transportation

1 · Sector

Weight and 12M allocation change

Information Technology18.5%+1.48 pp Materials2.6%+0.47 pp Consumer Staples9.0%+0.44 pp Utilities3.8%+0.36 pp Real Estate3.7%+0.31 pp Communication Services3.5%+0.30 pp Consumer Discretionary7.3%+0.14 pp Health Care16.9%+0.03 pp Energy4.1%-0.93 pp Industrials13.9%-1.13 pp Financials16.8%-1.46 pp

2 · Industry

Inside Industrials

Aerospace & Defense5.54%-1.28 pp Air Freight & Logistics0.78%-0.19 pp Rail Transportation1.12%+0.13 pp Human Resource & Employment Services0.57%+0.11 pp Environmental & Facilities Services0.45%+0.10 pp Data Processing & Outsourced Services0.08%+0.08 pp Construction Machinery & Heavy Transportation Equipment0.73%-0.06 pp Industrial Machinery & Supplies & Components0.98%-0.03 pp Diversified Support Services0.05%+0.03 pp Agricultural & Farm Machinery0.29%+0.02 pp Passenger Airlines0.51%-0.02 pp Research & Consulting Services0.21%+0.02 pp Cargo Ground Transportation0.06%-0.02 pp Electrical Components & Equipment0.67%-0.02 pp Building Products0.46%+0.02 pp Industrial Conglomerates1.20%-0.02 pp Construction & Engineering0.08%+0.01 pp Trading Companies & Distributors0.09%-0.01 pp Heavy Electrical Equipment0.00%+0.00 pp Passenger Ground Transportation0.00%+0.00 pp

3 · Sub-industry

Inside Rail Transportation

Rail Transportation1.12%+0.132 pp

Concentrated

Most of this industry's gains came from a few companies.

View all contributions →

Rail Transportation · weight

1.12%

Industry change · 12M

+0.13 pp

Rail Transportation · contribution

+0.132 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Apr 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
Union Pacific Corporation → UNP	United States	$125.3bn	0.698%	+0.312 pp	+0.066 pp	+35.3%	Yes
Norfolk Southern → NSC	United States	$54.3bn	0.302%	+0.152 pp	+0.053 pp	+45.0%	Yes
CSX Corporation → CSX	United States	$21.5bn	0.120%	+0.059 pp	+0.013 pp	+35.8%	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.