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›Materials›Steel›Steel

1 · Sector

Weight and 12M allocation change

Information Technology17.0%+0.98 ppEnergy5.1%+0.38 ppUtilities3.4%+0.28 ppReal Estate3.4%+0.12 ppHealth Care16.8%+0.09 ppConsumer Discretionary7.1%+0.05 ppMaterials2.1%-0.04 ppCommunication Services3.3%-0.22 ppFinancials18.2%-0.27 ppIndustrials15.0%-0.59 ppConsumer Staples8.6%-0.79 pp

2 · Industry

Inside Materials

Copper0.14%-0.03 ppPaper & Plastic Packaging Products & Materials0.25%-0.02 ppConstruction Materials0.17%-0.02 ppMetal, Glass & Plastic Containers0.09%+0.01 ppIndustrial Gases0.22%+0.01 ppFertilizers & Agricultural Chemicals0.12%+0.01 ppGold0.13%+0.01 ppSpecialty Chemicals0.88%-0.00 ppSteel0.12%-0.00 ppCommodity Chemicals0.00%+0.00 pp

3 · Sub-industry

Inside Steel

Steel0.12%-0.001 pp
Concentrated

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

View all contributions →
Steel · weight
0.12%
Industry change · 12M
-0.00 pp
Steel · contribution
-0.001 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Apr 2018 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Nucor →
NUE
United States$19.6bn0.120%-0.001 pp-0.001 pp-7.4%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.