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%+9.30 pp Health Care16.9%+0.36 pp Materials3.2%-0.04 pp Consumer Discretionary6.8%-0.33 pp Communication Services4.9%-0.41 pp Utilities3.4%-0.47 pp Consumer Staples8.5%-0.55 pp Real Estate3.2%-0.60 pp Industrials11.8%-1.61 pp Energy1.6%-1.86 pp Financials12.5%-3.80 pp

2 · Industry

Inside Industrials

Aerospace & Defense3.57%-1.71 pp Industrial Conglomerates1.15%-0.21 pp Passenger Airlines0.25%-0.21 pp Industrial Machinery & Supplies & Components1.19%+0.21 pp Air Freight & Logistics0.92%+0.20 pp Building Products0.56%+0.12 pp Human Resource & Employment Services0.46%-0.06 pp Agricultural & Farm Machinery0.34%+0.05 pp Cargo Ground Transportation0.11%+0.05 pp Rail Transportation0.91%-0.03 pp Environmental & Facilities Services0.41%-0.03 pp Trading Companies & Distributors0.12%+0.01 pp Electrical Components & Equipment0.62%-0.01 pp Construction Machinery & Heavy Transportation Equipment0.70%+0.01 pp Research & Consulting Services0.22%+0.01 pp Construction & Engineering0.09%+0.00 pp Diversified Support Services0.13%+0.00 pp Data Processing & Outsourced Services0.08%+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%-0.029 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

0.91%

Industry change · 12M

-0.03 pp

Rail Transportation · contribution

-0.029 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Oct 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	$119.4bn	0.565%	+0.565 pp	-0.033 pp	+9.5%	Yes
Norfolk Southern → NSC	United States	$53.1bn	0.251%	+0.251 pp	+0.004 pp	+16.6%	Yes
CSX Corporation → CSX	United States	$20.1bn	0.095%	+0.095 pp	-0.000 pp	+13.9%	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.