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›Construction Materials›Construction Materials

1 · Sector

Weight and 12M allocation change

Information Technology26.2%+5.17 ppConsumer Discretionary7.6%+1.03 ppIndustrials12.5%+0.98 ppFinancials14.5%+0.40 ppMaterials3.4%+0.25 ppEnergy2.2%-0.33 ppUtilities3.2%-0.52 ppReal Estate3.1%-0.54 ppCommunication Services4.6%-0.59 ppConsumer Staples7.1%-2.07 ppHealth Care15.5%-3.78 pp

2 · Industry

Inside Materials

Specialty Chemicals0.97%+0.22 ppCopper0.20%+0.13 ppGold0.18%-0.09 ppIndustrial Gases0.77%-0.05 ppPaper & Plastic Packaging Products & Materials0.53%-0.05 ppFertilizers & Agricultural Chemicals0.22%+0.05 ppSteel0.09%+0.02 ppCommodity Chemicals0.17%+0.02 ppConstruction Materials0.17%+0.02 ppMetal, Glass & Plastic Containers0.11%-0.01 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.17%+0.015 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.17%
Industry change · 12M
+0.02 pp
Construction Materials · contribution
+0.015 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Apr 2021 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Martin Marietta Materials →
MLM
United States$22.0bn0.080%+0.037 pp+0.013 pp+87.4%Yes
Vulcan Materials Company →
VMC
United States$23.6bn0.086%+0.038 pp+0.002 pp+59.5%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.