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 Technology26.9%+26.90 pp Health Care15.8%+15.74 pp Industrials12.3%+12.31 pp Consumer Discretionary7.4%+7.35 pp Consumer Staples7.1%+7.09 pp Communication Services4.5%+4.49 pp Materials3.3%+3.27 pp Real Estate3.1%+3.13 pp Utilities3.0%+2.97 pp Energy2.4%+2.40 pp Financials14.3%-85.64 pp

2 · Industry

Inside Industrials

Aerospace & Defense4.22%+4.21 pp Industrial Machinery & Supplies & Components1.14%+1.14 pp Industrial Conglomerates1.05%+1.05 pp Air Freight & Logistics0.87%+0.87 pp Rail Transportation0.84%+0.84 pp Construction Machinery & Heavy Transportation Equipment0.67%+0.67 pp Electrical Components & Equipment0.64%+0.64 pp Building Products0.59%+0.59 pp Human Resource & Employment Services0.43%+0.43 pp Environmental & Facilities Services0.39%+0.39 pp Agricultural & Farm Machinery0.39%+0.39 pp Passenger Airlines0.27%+0.27 pp Research & Consulting Services0.20%+0.20 pp Trading Companies & Distributors0.13%+0.13 pp Diversified Support Services0.11%+0.11 pp Cargo Ground Transportation0.11%+0.11 pp Construction & Engineering0.10%+0.10 pp Heavy Electrical Equipment0.09%+0.09 pp Data Processing & Outsourced Services0.07%+0.07 pp Passenger Ground Transportation0.00%+0.00 pp

3 · Sub-industry

Inside Rail Transportation

Rail Transportation0.84%+0.835 pp

Concentrated

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

View all contributions →

Rail Transportation · weight

0.84%

Industry change · 12M

+0.84 pp

Rail Transportation · contribution

+0.835 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jun 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	$146.1bn	0.516%	+0.227 pp	+0.515 pp	+32.6%	Yes
Norfolk Southern → NSC	United States	$66.4bn	0.234%	+0.102 pp	+0.234 pp	+53.7%	Yes
CSX Corporation → CSX	United States	$24.3bn	0.086%	+0.038 pp	+0.086 pp	+39.7%	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.