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 Technology18.4%+8.88 pp Financials16.5%+7.33 pp Health Care17.0%+6.61 pp Industrials13.2%+6.00 pp Consumer Staples8.7%+3.60 pp Communication Services5.3%+3.24 pp Materials3.2%+1.83 pp Utilities3.7%+1.55 pp Real Estate3.5%+1.53 pp Energy3.5%+1.16 pp Consumer Discretionary7.0%-41.73 pp

2 · Industry

Inside Industrials

Aerospace & Defense5.22%+2.47 pp Industrial Conglomerates1.32%+0.65 pp Industrial Machinery & Supplies & Components1.00%+0.48 pp Rail Transportation0.96%+0.38 pp Construction Machinery & Heavy Transportation Equipment0.70%+0.31 pp Electrical Components & Equipment0.65%+0.29 pp Air Freight & Logistics0.68%+0.23 pp Human Resource & Employment Services0.51%+0.22 pp Building Products0.42%+0.19 pp Environmental & Facilities Services0.41%+0.17 pp Passenger Airlines0.43%+0.14 pp Diversified Support Services0.13%+0.10 pp Research & Consulting Services0.20%+0.10 pp Agricultural & Farm Machinery0.27%+0.10 pp Trading Companies & Distributors0.11%+0.07 pp Cargo Ground Transportation0.09%+0.05 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 Transportation0.96%+0.384 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

0.96%

Industry change · 12M

+0.38 pp

Rail Transportation · contribution

+0.384 pp

Company participation

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Dec 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	$125.5bn	0.616%	+0.010 pp	+0.252 pp	+33.7%	No
Norfolk Southern → NSC	United States	$50.6bn	0.248%	-0.003 pp	+0.103 pp	+32.4%	No
CSX Corporation → CSX	United States	$18.9bn	0.093%	-0.005 pp	+0.030 pp	+18.1%	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.