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 Technology41.0%+4.61 pp Industrials10.3%+0.34 pp Energy2.4%+0.09 pp Materials2.1%-0.14 pp Utilities2.5%-0.22 pp Real Estate2.0%-0.28 pp Consumer Discretionary11.2%-0.41 pp Health Care10.4%-0.48 pp Communication Services2.2%-0.51 pp Consumer Staples5.7%-1.01 pp Financials10.3%-1.99 pp

2 · Industry

Inside Industrials

Construction Machinery & Heavy Transportation Equipment1.21%+0.54 pp Heavy Electrical Equipment0.58%+0.25 pp Construction & Engineering0.40%+0.24 pp Electrical Components & Equipment0.84%+0.21 pp Human Resource & Employment Services0.22%-0.17 pp Passenger Ground Transportation0.26%-0.17 pp Diversified Support Services0.19%-0.15 pp Environmental & Facilities Services0.34%-0.14 pp Aerospace & Defense2.45%-0.10 pp Research & Consulting Services0.07%-0.09 pp Industrial Conglomerates0.49%-0.08 pp Industrial Machinery & Supplies & Components0.89%-0.08 pp Building Products0.54%-0.06 pp Passenger Airlines0.23%+0.06 pp Trading Companies & Distributors0.22%+0.06 pp Data Processing & Outsourced Services0.03%-0.03 pp Air Freight & Logistics0.34%+0.03 pp Cargo Ground Transportation0.13%+0.02 pp Rail Transportation0.56%+0.00 pp Agricultural & Farm Machinery0.30%+0.00 pp

3 · Sub-industry

Inside Rail Transportation

Rail Transportation0.56%+0.004 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

0.56%

Industry change · 12M

+0.00 pp

Rail Transportation · contribution

+0.004 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jun 2026 · 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
CSX Corporation → CSX	United States	$88.3bn	0.153%	+0.042 pp	+0.021 pp	+47.7%	Yes
Union Pacific Corporation → UNP	United States	$161.5bn	0.281%	+0.071 pp	-0.016 pp	+20.9%	Yes
Norfolk Southern → NSC	United States	$70.7bn	0.123%	+0.029 pp	-0.002 pp	+25.2%	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.