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

Consumer Discretionary52.2%+52.24 pp Information Technology13.5%+13.45 pp Health Care8.1%+8.05 pp Financials7.4%+7.34 pp Industrials6.6%+6.58 pp Consumer Staples3.8%+3.78 pp Communication Services2.4%+2.43 pp Materials1.7%+1.66 pp Real Estate1.5%+1.53 pp Energy1.2%+1.20 pp Utilities1.7%-98.26 pp

2 · Industry

Inside Industrials

Aerospace & Defense2.26%+2.26 pp Industrial Machinery & Supplies & Components0.61%+0.60 pp Industrial Conglomerates0.58%+0.58 pp Rail Transportation0.47%+0.47 pp Air Freight & Logistics0.42%+0.42 pp Construction Machinery & Heavy Transportation Equipment0.39%+0.39 pp Electrical Components & Equipment0.33%+0.33 pp Building Products0.30%+0.30 pp Agricultural & Farm Machinery0.23%+0.23 pp Human Resource & Employment Services0.23%+0.23 pp Environmental & Facilities Services0.20%+0.20 pp Passenger Airlines0.17%+0.17 pp Research & Consulting Services0.10%+0.10 pp Trading Companies & Distributors0.07%+0.07 pp Diversified Support Services0.06%+0.06 pp Cargo Ground Transportation0.05%+0.05 pp Construction & Engineering0.05%+0.05 pp Heavy Electrical Equipment0.04%+0.04 pp Data Processing & Outsourced Services0.03%+0.03 pp Passenger Ground Transportation0.00%+0.00 pp

3 · Sub-industry

Inside Rail Transportation

Rail Transportation0.47%+0.468 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

0.47%

Industry change · 12M

+0.47 pp

Rail Transportation · contribution

+0.468 pp

Company participation

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Mar 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	$147.6bn	0.289%	-0.279 pp	+0.288 pp	+59.4%	No
Norfolk Southern → NSC	United States	$67.6bn	0.132%	-0.112 pp	+0.132 pp	+87.4%	No
CSX Corporation → CSX	United States	$24.5bn	0.048%	-0.046 pp	+0.048 pp	+70.4%	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.