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 Technology29.7%+2.54 pp Health Care16.7%+0.60 pp Energy2.3%+0.44 pp Real Estate3.4%+0.43 pp Consumer Discretionary7.8%+0.36 pp Utilities3.1%+0.17 pp Materials3.3%+0.15 pp Financials12.9%-0.47 pp Consumer Staples7.2%-0.68 pp Communication Services3.6%-1.42 pp Industrials10.0%-2.13 pp

2 · Industry

Inside Industrials

Aerospace & Defense2.06%-1.97 pp Industrial Conglomerates0.90%-0.31 pp Rail Transportation1.02%+0.11 pp Construction Machinery & Heavy Transportation Equipment0.58%-0.09 pp Building Products0.60%+0.07 pp Heavy Electrical Equipment0.07%+0.07 pp Passenger Airlines0.21%-0.06 pp Human Resource & Employment Services0.49%+0.05 pp Industrial Machinery & Supplies & Components1.11%-0.04 pp Air Freight & Logistics0.78%-0.04 pp Environmental & Facilities Services0.42%+0.04 pp Cargo Ground Transportation0.13%+0.03 pp Diversified Support Services0.11%-0.02 pp Electrical Components & Equipment0.64%+0.02 pp Construction & Engineering0.10%+0.01 pp Trading Companies & Distributors0.14%+0.01 pp Agricultural & Farm Machinery0.34%-0.00 pp Data Processing & Outsourced Services0.07%-0.00 pp Research & Consulting Services0.23%+0.00 pp Passenger Ground Transportation0.00%+0.00 pp

3 · Sub-industry

Inside Rail Transportation

Rail Transportation1.02%+0.112 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

1.02%

Industry change · 12M

+0.11 pp

Rail Transportation · contribution

+0.112 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Dec 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
CSX Corporation → CSX	United States	$83.4bn	0.267%	+0.032 pp	+0.174 pp	+25.7%	Yes
Union Pacific Corporation → UNP	United States	$162.0bn	0.519%	+0.070 pp	-0.049 pp	+23.3%	Yes
Norfolk Southern → NSC	United States	$72.4bn	0.232%	+0.025 pp	-0.012 pp	+27.3%	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.