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 Technology28.3%+2.98 ppConsumer Discretionary12.3%+1.34 ppIndustrials9.9%+0.26 ppEnergy3.7%+0.18 ppMaterials2.9%-0.09 ppCommunication Services2.9%-0.40 ppReal Estate2.8%-0.49 ppUtilities2.8%-0.68 ppConsumer Staples7.1%-0.72 ppFinancials11.1%-0.86 ppHealth Care16.2%-1.52 pp

2 · Industry

Inside Materials

Paper & Plastic Packaging Products & Materials0.36%-0.09 ppFertilizers & Agricultural Chemicals0.22%-0.09 ppIndustrial Gases0.82%+0.09 ppSteel0.19%+0.08 ppSpecialty Chemicals0.71%-0.07 ppGold0.10%-0.03 ppCopper0.18%+0.03 ppConstruction Materials0.17%+0.01 ppMetal, Glass & Plastic Containers0.05%-0.01 ppCommodity Chemicals0.12%-0.00 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.17%+0.013 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.17%
Industry change · 12M
+0.01 pp
Construction Materials · contribution
+0.013 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2023 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Vulcan Materials Company →
VMC
United States$26.8bn0.090%+0.020 pp+0.007 pp+29.2%Yes
Martin Marietta Materials →
MLM
United States$25.4bn0.085%+0.019 pp+0.006 pp+28.3%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.