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

Health Care17.6%+1.90 ppEnergy4.0%+1.62 ppInformation Technology26.9%+1.35 ppUtilities3.6%+0.53 ppConsumer Staples7.7%+0.52 ppReal Estate3.4%+0.27 ppMaterials3.5%-0.04 ppConsumer Discretionary6.7%-0.71 ppCommunication Services3.8%-0.73 ppFinancials12.8%-1.90 ppIndustrials10.0%-2.80 pp

2 · Industry

Inside Materials

Fertilizers & Agricultural Chemicals0.32%+0.11 ppSpecialty Chemicals0.89%-0.08 ppCopper0.20%-0.02 ppSteel0.13%+0.02 ppGold0.19%-0.02 ppMetal, Glass & Plastic Containers0.08%-0.01 ppConstruction Materials0.16%-0.01 ppIndustrial Gases0.79%-0.01 ppCommodity Chemicals0.18%-0.00 ppPaper & Plastic Packaging Products & Materials0.52%-0.00 pp

3 · Sub-industry

Inside Steel

Steel0.13%+0.017 pp
Concentrated

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

View all contributions →
Steel · weight
0.13%
Industry change · 12M
+0.02 pp
Steel · contribution
+0.017 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

May 2022 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Nucor →
NUE
United States$35.2bn0.127%+0.004 pp+0.017 pp+31.2%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.