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

Communication Services5.0%+1.82 ppConsumer Staples9.1%+0.76 ppMaterials2.8%+0.64 ppUtilities3.9%+0.57 ppHealth Care17.2%+0.54 ppReal Estate3.9%+0.51 ppConsumer Discretionary7.0%-0.07 ppInformation Technology17.6%-0.07 ppEnergy3.9%-1.29 ppFinancials16.3%-1.64 ppIndustrials13.4%-1.77 pp

2 · Industry

Inside Materials

Industrial Gases0.83%+0.62 ppCommodity Chemicals0.20%+0.20 ppCopper0.08%-0.07 ppPaper & Plastic Packaging Products & Materials0.19%-0.06 ppSpecialty Chemicals0.81%-0.05 ppMetal, Glass & Plastic Containers0.12%+0.04 ppSteel0.09%-0.04 ppGold0.16%+0.03 ppFertilizers & Agricultural Chemicals0.10%-0.02 ppConstruction Materials0.17%-0.01 pp

3 · Sub-industry

Inside Steel

Steel0.09%-0.039 pp
Concentrated

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

View all contributions →
Steel · weight
0.09%
Industry change · 12M
-0.04 pp
Steel · contribution
-0.039 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

May 2019 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Nucor →
NUE
United States$14.6bn0.085%-0.022 pp-0.039 pp-23.2%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.