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 Technology21.1%+2.55 ppHealth Care19.3%+2.41 ppCommunication Services5.2%+1.68 ppMaterials3.1%+0.58 ppConsumer Staples9.2%+0.20 ppReal Estate3.6%-0.03 ppUtilities3.7%-0.06 ppConsumer Discretionary6.5%-0.72 ppEnergy2.5%-1.60 ppIndustrials11.5%-2.34 ppFinancials14.1%-2.68 pp

2 · Industry

Inside Materials

Paper & Plastic Packaging Products & Materials0.58%+0.37 ppCommodity Chemicals0.15%+0.15 ppGold0.27%+0.13 ppSpecialty Chemicals0.75%-0.09 ppFertilizers & Agricultural Chemicals0.17%+0.06 ppIndustrial Gases0.83%+0.03 ppSteel0.07%-0.03 ppCopper0.07%-0.03 ppConstruction Materials0.15%-0.02 ppMetal, Glass & Plastic Containers0.12%+0.01 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.15%-0.020 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.15%
Industry change · 12M
-0.02 pp
Construction Materials · contribution
-0.020 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Apr 2020 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Martin Marietta Materials →
MLM
United States$11.8bn0.066%-0.015 pp-0.011 pp-13.5%Yes
Vulcan Materials Company →
VMC
United States$15.0bn0.084%-0.009 pp-0.009 pp-9.6%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.