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 Technology26.8%+8.71 ppMaterials3.2%-0.02 ppConsumer Discretionary6.8%-0.23 ppCommunication Services5.0%-0.29 ppHealth Care16.4%-0.39 ppReal Estate3.1%-0.54 ppConsumer Staples8.2%-0.62 ppUtilities3.0%-0.62 ppIndustrials12.5%-1.18 ppEnergy1.9%-1.53 ppFinancials13.2%-3.30 pp

2 · Industry

Inside Materials

Copper0.14%+0.06 ppPaper & Plastic Packaging Products & Materials0.56%-0.05 ppGold0.20%+0.04 ppSpecialty Chemicals0.75%-0.04 ppCommodity Chemicals0.17%-0.03 ppConstruction Materials0.15%-0.03 ppMetal, Glass & Plastic Containers0.13%+0.02 ppSteel0.07%-0.02 ppIndustrial Gases0.83%+0.01 ppFertilizers & Agricultural Chemicals0.19%+0.01 pp

3 · Sub-industry

Inside Steel

Steel0.07%-0.017 pp
Concentrated

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

View all contributions →
Steel · weight
0.07%
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

Nov 2020 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Nucor →
NUE
United States$16.2bn0.069%+0.069 pp-0.017 pp-1.0%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.