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 Technology19.1%+9.77 pp Financials16.2%+6.99 pp Health Care16.6%+6.66 pp Industrials13.4%+5.77 pp Consumer Staples8.8%+3.81 pp Communication Services5.2%+3.23 pp Utilities3.9%+1.91 pp Materials3.1%+1.72 pp Real Estate3.6%+1.56 pp Energy3.2%+0.74 pp Consumer Discretionary6.9%-42.15 pp

2 · Industry

Inside Industrials

Aerospace & Defense5.63%+2.52 pp Industrial Conglomerates1.21%+0.55 pp Industrial Machinery & Supplies & Components0.97%+0.44 pp Rail Transportation0.98%+0.38 pp Electrical Components & Equipment0.63%+0.26 pp Construction Machinery & Heavy Transportation Equipment0.63%+0.25 pp Human Resource & Employment Services0.52%+0.23 pp Environmental & Facilities Services0.45%+0.21 pp Building Products0.41%+0.18 pp Air Freight & Logistics0.62%+0.17 pp Passenger Airlines0.41%+0.12 pp Research & Consulting Services0.22%+0.11 pp Diversified Support Services0.13%+0.11 pp Agricultural & Farm Machinery0.25%+0.07 pp Trading Companies & Distributors0.10%+0.05 pp Cargo Ground Transportation0.08%+0.04 pp Construction & Engineering0.08%+0.04 pp Data Processing & Outsourced Services0.07%+0.03 pp Heavy Electrical Equipment0.00%+0.00 pp Passenger Ground Transportation0.00%+0.00 pp

3 · Sub-industry

Inside Rail Transportation

Rail Transportation0.98%+0.382 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

0.98%

Industry change · 12M

+0.38 pp

Rail Transportation · contribution

+0.382 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jan 2020 · 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	$124.6bn	0.614%	+0.016 pp	+0.228 pp	+15.3%	Yes
Norfolk Southern → NSC	United States	$54.3bn	0.268%	+0.020 pp	+0.117 pp	+26.6%	Yes
CSX Corporation → CSX	United States	$19.9bn	0.098%	+0.003 pp	+0.037 pp	+17.8%	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.