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 Technology35.4%+6.08 pp Financials12.0%+0.50 pp Consumer Discretionary12.8%+0.34 pp Consumer Staples6.7%+0.10 pp Utilities2.6%-0.18 pp Communication Services2.5%-0.30 pp Real Estate2.3%-0.61 pp Materials2.2%-0.64 pp Energy2.4%-0.74 pp Industrials9.3%-1.06 pp Health Care11.7%-3.51 pp

2 · Industry

Inside Industrials

Aerospace & Defense2.09%-0.31 pp Rail Transportation0.58%-0.24 pp Heavy Electrical Equipment0.23%+0.20 pp Industrial Machinery & Supplies & Components1.03%-0.19 pp Air Freight & Logistics0.39%-0.18 pp Diversified Support Services0.34%+0.11 pp Industrial Conglomerates0.58%-0.10 pp Passenger Ground Transportation0.29%-0.09 pp Agricultural & Farm Machinery0.26%-0.07 pp Construction Machinery & Heavy Transportation Equipment0.70%-0.07 pp Environmental & Facilities Services0.43%-0.06 pp Electrical Components & Equipment0.63%-0.05 pp Building Products0.57%+0.05 pp Passenger Airlines0.21%+0.04 pp Research & Consulting Services0.16%-0.03 pp Human Resource & Employment Services0.38%-0.03 pp Trading Companies & Distributors0.15%-0.02 pp Data Processing & Outsourced Services0.06%-0.01 pp Construction & Engineering0.14%+0.01 pp Cargo Ground Transportation0.12%-0.00 pp

3 · Sub-industry

Inside Rail Transportation

Rail Transportation0.58%-0.235 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

0.58%

Industry change · 12M

-0.24 pp

Rail Transportation · contribution

-0.235 pp

Company participation

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Dec 2024 · 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	$138.3bn	0.313%	-0.036 pp	-0.133 pp	-5.1%	No
CSX Corporation → CSX	United States	$62.2bn	0.141%	-0.015 pp	-0.063 pp	-5.6%	No
Norfolk Southern → NSC	United States	$53.1bn	0.120%	-0.010 pp	-0.039 pp	+1.6%	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.