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 Technology36.4%+15.47 pp Financials12.3%+4.20 pp Consumer Discretionary11.6%+3.35 pp Industrials9.9%+2.86 pp Consumer Staples6.8%+1.56 pp Communication Services2.7%+0.86 pp Utilities2.7%+0.78 pp Health Care10.9%+0.56 pp Real Estate2.3%+0.49 pp Energy2.3%+0.23 pp Materials2.2%-30.36 pp

2 · Industry

Inside Industrials

Aerospace & Defense2.55%+0.92 pp Heavy Electrical Equipment0.33%+0.23 pp Building Products0.61%+0.22 pp Industrial Machinery & Supplies & Components0.97%+0.18 pp Diversified Support Services0.34%+0.17 pp Electrical Components & Equipment0.63%+0.15 pp Construction Machinery & Heavy Transportation Equipment0.68%+0.15 pp Passenger Ground Transportation0.42%+0.14 pp Industrial Conglomerates0.57%+0.13 pp Human Resource & Employment Services0.38%+0.12 pp Environmental & Facilities Services0.48%+0.11 pp Agricultural & Farm Machinery0.30%+0.10 pp Rail Transportation0.55%+0.08 pp Construction & Engineering0.15%+0.06 pp Passenger Airlines0.17%+0.05 pp Trading Companies & Distributors0.16%+0.04 pp Air Freight & Logistics0.31%-0.04 pp Research & Consulting Services0.16%+0.04 pp Data Processing & Outsourced Services0.06%+0.02 pp Cargo Ground Transportation0.10%+0.00 pp

3 · Sub-industry

Inside Rail Transportation

Rail Transportation0.55%+0.081 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

0.55%

Industry change · 12M

+0.08 pp

Rail Transportation · contribution

+0.081 pp

Company participation

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jun 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
Union Pacific Corporation → UNP	United States	$137.5bn	0.296%	-0.043 pp	+0.038 pp	+4.0%	No
Norfolk Southern → NSC	United States	$57.7bn	0.124%	-0.003 pp	+0.034 pp	+21.9%	No
CSX Corporation → CSX	United States	$61.3bn	0.132%	-0.000 pp	+0.010 pp	-1.0%	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.