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 Technology37.5%+17.67 pp Financials12.1%+3.93 pp Consumer Discretionary11.7%+3.50 pp Industrials10.0%+2.95 pp Consumer Staples6.5%+1.39 pp Utilities2.8%+0.81 pp Communication Services2.5%+0.68 pp Real Estate2.3%+0.39 pp Energy2.3%+0.30 pp Health Care10.3%+0.23 pp Materials2.1%-31.86 pp

2 · Industry

Inside Industrials

Aerospace & Defense2.59%+0.90 pp Heavy Electrical Equipment0.40%+0.30 pp Construction Machinery & Heavy Transportation Equipment0.72%+0.20 pp Building Products0.59%+0.20 pp Electrical Components & Equipment0.66%+0.20 pp Diversified Support Services0.32%+0.17 pp Industrial Machinery & Supplies & Components0.96%+0.16 pp Passenger Ground Transportation0.39%+0.15 pp Environmental & Facilities Services0.46%+0.12 pp Agricultural & Farm Machinery0.30%+0.12 pp Trading Companies & Distributors0.23%+0.11 pp Industrial Conglomerates0.54%+0.10 pp Human Resource & Employment Services0.37%+0.10 pp Construction & Engineering0.16%+0.07 pp Passenger Airlines0.17%+0.06 pp Rail Transportation0.55%+0.06 pp Air Freight & Logistics0.28%-0.04 pp Cargo Ground Transportation0.10%-0.02 pp Research & Consulting Services0.14%+0.02 pp Data Processing & Outsourced Services0.06%+0.02 pp

3 · Sub-industry

Inside Rail Transportation

Rail Transportation0.55%+0.055 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

0.55%

Industry change · 12M

+0.06 pp

Rail Transportation · contribution

+0.055 pp

Company participation

67%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jul 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
Norfolk Southern → NSC	United States	$62.4bn	0.132%	+0.010 pp	+0.031 pp	+13.9%	Yes
CSX Corporation → CSX	United States	$66.3bn	0.140%	+0.013 pp	+0.017 pp	+2.8%	Yes
Union Pacific Corporation → UNP	United States	$131.6bn	0.278%	-0.032 pp	+0.008 pp	-8.0%	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.