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 Technology27.5%+27.47 ppHealth Care16.1%+16.09 ppIndustrials11.8%+11.83 ppConsumer Discretionary7.3%+7.33 ppConsumer Staples7.0%+6.99 ppCommunication Services4.3%+4.28 ppMaterials3.2%+3.15 ppReal Estate3.1%+3.13 ppUtilities3.0%+2.99 ppEnergy2.3%+2.34 ppFinancials14.3%-85.61 pp

2 · Industry

Inside Materials

Specialty Chemicals0.90%+0.90 ppIndustrial Gases0.73%+0.73 ppPaper & Plastic Packaging Products & Materials0.49%+0.49 ppFertilizers & Agricultural Chemicals0.20%+0.20 ppCopper0.17%+0.17 ppConstruction Materials0.15%+0.15 ppGold0.15%+0.15 ppCommodity Chemicals0.15%+0.15 ppMetal, Glass & Plastic Containers0.10%+0.10 ppSteel0.10%+0.10 pp

3 · Sub-industry

Inside Steel

Steel0.10%+0.101 pp
Concentrated

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

View all contributions →
Steel · weight
0.10%
Industry change · 12M
+0.10 pp
Steel · contribution
+0.101 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2021 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Nucor →
NUE
United States$28.9bn0.102%+0.000 pp+0.101 pp+124.2%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.