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 Technology27.2%+8.81 pp Consumer Discretionary7.5%+0.48 pp Materials3.1%-0.14 pp Communication Services5.1%-0.22 pp Real Estate2.9%-0.60 pp Utilities2.9%-0.78 pp Health Care16.1%-0.85 pp Consumer Staples7.8%-0.86 pp Industrials12.1%-1.12 pp Energy1.9%-1.68 pp Financials13.4%-3.05 pp

2 · Industry

Inside Industrials

Aerospace & Defense4.04%-1.18 pp Passenger Airlines0.27%-0.17 pp Industrial Machinery & Supplies & Components1.16%+0.15 pp Air Freight & Logistics0.83%+0.14 pp Industrial Conglomerates1.20%-0.12 pp Building Products0.53%+0.11 pp Agricultural & Farm Machinery0.34%+0.07 pp Human Resource & Employment Services0.44%-0.07 pp Rail Transportation0.91%-0.05 pp Environmental & Facilities Services0.38%-0.04 pp Research & Consulting Services0.23%+0.03 pp Electrical Components & Equipment0.62%-0.03 pp Construction Machinery & Heavy Transportation Equipment0.67%-0.02 pp Cargo Ground Transportation0.10%+0.02 pp Trading Companies & Distributors0.12%+0.01 pp Construction & Engineering0.09%+0.01 pp Data Processing & Outsourced Services0.07%+0.00 pp Diversified Support Services0.13%+0.00 pp Heavy Electrical Equipment0.00%+0.00 pp Passenger Ground Transportation0.00%+0.00 pp

3 · Sub-industry

Inside Rail Transportation

Rail Transportation0.91%-0.051 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

0.91%

Industry change · 12M

-0.05 pp

Rail Transportation · contribution

-0.051 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Dec 2020 · 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	$140.3bn	0.568%	+0.567 pp	-0.048 pp	+17.6%	Yes
Norfolk Southern → NSC	United States	$60.3bn	0.244%	+0.244 pp	-0.004 pp	+24.8%	Yes
CSX Corporation → CSX	United States	$23.1bn	0.094%	+0.094 pp	+0.001 pp	+27.1%	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.