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

Consumer Discretionary11.4%+4.38 ppEnergy3.6%+0.25 ppConsumer Staples7.5%+0.07 ppUtilities3.3%-0.11 ppMaterials3.1%-0.19 ppIndustrials10.0%-0.23 ppReal Estate3.1%-0.29 ppCommunication Services3.2%-0.40 ppHealth Care16.5%-0.47 ppInformation Technology27.3%-1.33 ppFinancials11.1%-1.69 pp

2 · Industry

Inside Materials

Industrial Gases0.81%+0.08 ppGold0.13%-0.08 ppSpecialty Chemicals0.74%-0.07 ppSteel0.20%+0.06 ppFertilizers & Agricultural Chemicals0.25%-0.05 ppCopper0.20%-0.04 ppMetal, Glass & Plastic Containers0.06%-0.04 ppCommodity Chemicals0.13%-0.03 ppPaper & Plastic Packaging Products & Materials0.42%-0.02 ppConstruction Materials0.15%-0.01 pp

3 · Sub-industry

Inside Steel

Steel0.20%+0.064 pp
Concentrated

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

View all contributions →
Steel · weight
0.20%
Industry change · 12M
+0.06 pp
Steel · contribution
+0.064 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Mar 2023 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Steel Dynamics →
STLD
United States$19.4bn0.066%+0.004 pp+0.066 pp+37.8%Yes
Nucor →
NUE
United States$38.9bn0.133%+0.011 pp-0.002 pp+5.6%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.