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 Technology17.9%+8.09 ppFinancials16.2%+6.66 ppHealth Care16.5%+6.53 ppIndustrials13.4%+5.79 ppConsumer Staples9.0%+3.80 ppCommunication Services5.3%+3.36 ppMaterials3.2%+2.13 ppReal Estate3.8%+1.85 ppUtilities3.9%+1.83 ppEnergy3.5%+1.02 ppConsumer Discretionary7.1%-41.06 pp

2 · Industry

Inside Materials

Industrial Gases0.80%+0.69 ppPaper & Plastic Packaging Products & Materials0.60%+0.48 ppSpecialty Chemicals0.79%+0.32 ppCommodity Chemicals0.20%+0.20 ppFertilizers & Agricultural Chemicals0.19%+0.12 ppGold0.17%+0.11 ppConstruction Materials0.18%+0.10 ppMetal, Glass & Plastic Containers0.12%+0.07 ppSteel0.09%+0.02 ppCopper0.07%+0.02 pp

3 · Sub-industry

Inside Steel

Steel0.09%+0.022 pp
Concentrated

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

View all contributions →
Steel · weight
0.09%
Industry change · 12M
+0.02 pp
Steel · contribution
+0.022 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Nucor →
NUE
United States$16.3bn0.085%-0.003 pp+0.022 pp-6.2%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.