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 Technology37.5%+17.67 ppFinancials12.1%+3.93 ppConsumer Discretionary11.7%+3.50 ppIndustrials10.0%+2.95 ppConsumer Staples6.5%+1.39 ppUtilities2.8%+0.81 ppCommunication Services2.5%+0.68 ppReal Estate2.3%+0.39 ppEnergy2.3%+0.30 ppHealth Care10.3%+0.23 ppMaterials2.1%-31.86 pp

2 · Industry

Inside Materials

Paper & Plastic Packaging Products & Materials0.31%-32.06 ppIndustrial Gases0.59%+0.10 ppFertilizers & Agricultural Chemicals0.16%+0.05 ppGold0.14%+0.04 ppCommodity Chemicals0.03%-0.03 ppSpecialty Chemicals0.48%+0.02 ppConstruction Materials0.15%+0.02 ppCopper0.12%+0.00 ppSteel0.11%+0.00 ppMetal, Glass & Plastic Containers0.03%-0.00 pp

3 · Sub-industry

Inside Steel

Steel0.11%+0.002 pp
Concentrated

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

View all contributions →
Steel · weight
0.11%
Industry change · 12M
+0.00 pp
Steel · contribution
+0.002 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jul 2025 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Steel Dynamics →
STLD
United States$18.9bn0.040%-0.007 pp+0.002 pp-2.7%No
Nucor →
NUE
United States$33.0bn0.070%+0.004 pp-0.000 pp-10.7%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.