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 Technology16.9%+0.89 ppFinancials18.6%+0.16 ppHealth Care16.8%+0.07 ppUtilities3.2%+0.02 ppMaterials2.1%-0.02 ppReal Estate3.2%-0.05 ppConsumer Discretionary7.0%-0.09 ppCommunication Services3.3%-0.14 ppIndustrials15.3%-0.24 ppEnergy4.4%-0.28 ppConsumer Staples9.0%-0.33 pp

2 · Industry

Inside Materials

Specialty Chemicals0.86%-0.02 ppConstruction Materials0.17%-0.01 ppMetal, Glass & Plastic Containers0.08%+0.01 ppFertilizers & Agricultural Chemicals0.12%+0.01 ppSteel0.12%+0.00 ppGold0.12%-0.00 ppIndustrial Gases0.21%+0.00 ppCopper0.16%+0.00 ppPaper & Plastic Packaging Products & Materials0.27%-0.00 ppCommodity Chemicals0.00%+0.00 pp

3 · Sub-industry

Inside Steel

Steel0.12%+0.003 pp
Concentrated

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

View all contributions →
Steel · weight
0.12%
Industry change · 12M
+0.00 pp
Steel · contribution
+0.003 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Nucor →
NUE
United States$20.8bn0.125%+0.003 pp+0.003 pp-2.3%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.