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 Technology26.2%+5.17 pp Consumer Discretionary7.6%+1.03 pp Industrials12.5%+0.98 pp Financials14.5%+0.40 pp Materials3.4%+0.25 pp Energy2.2%-0.33 pp Utilities3.2%-0.52 pp Real Estate3.1%-0.54 pp Communication Services4.6%-0.59 pp Consumer Staples7.1%-2.07 pp Health Care15.5%-3.78 pp

2 · Industry

Inside Industrials

Aerospace & Defense4.23%+0.23 pp Air Freight & Logistics0.87%+0.22 pp Building Products0.57%+0.20 pp Industrial Machinery & Supplies & Components1.17%+0.20 pp Agricultural & Farm Machinery0.42%+0.17 pp Industrial Conglomerates1.09%-0.12 pp Passenger Airlines0.31%+0.08 pp Human Resource & Employment Services0.42%-0.08 pp Construction Machinery & Heavy Transportation Equipment0.72%+0.07 pp Heavy Electrical Equipment0.07%+0.07 pp Rail Transportation0.88%-0.07 pp Trading Companies & Distributors0.14%+0.03 pp Environmental & Facilities Services0.40%-0.03 pp Diversified Support Services0.11%-0.03 pp Research & Consulting Services0.21%-0.02 pp Construction & Engineering0.10%+0.02 pp Electrical Components & Equipment0.63%+0.02 pp Cargo Ground Transportation0.11%+0.01 pp Data Processing & Outsourced Services0.07%-0.01 pp Passenger Ground Transportation0.00%+0.00 pp

3 · Sub-industry

Inside Rail Transportation

Rail Transportation0.88%-0.067 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

0.88%

Industry change · 12M

-0.07 pp

Rail Transportation · contribution

-0.067 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Apr 2021 · 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	$147.5bn	0.535%	+0.216 pp	-0.072 pp	+41.8%	Yes
Norfolk Southern → NSC	United States	$69.9bn	0.253%	+0.109 pp	+0.008 pp	+66.3%	Yes
CSX Corporation → CSX	United States	$25.4bn	0.092%	+0.040 pp	-0.002 pp	+54.1%	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.