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 Technology27.9%+27.90 ppHealth Care16.3%+16.24 ppIndustrials12.0%+11.94 ppConsumer Discretionary7.1%+7.11 ppConsumer Staples7.0%+6.96 ppCommunication Services4.3%+4.32 ppMaterials3.3%+3.25 ppReal Estate3.2%+3.20 ppUtilities3.1%+3.05 ppEnergy2.0%+2.04 ppFinancials13.9%-86.02 pp

2 · Industry

Inside Materials

Specialty Chemicals0.94%+0.94 ppIndustrial Gases0.74%+0.74 ppPaper & Plastic Packaging Products & Materials0.52%+0.51 ppFertilizers & Agricultural Chemicals0.18%+0.18 ppCopper0.18%+0.18 ppConstruction Materials0.16%+0.16 ppCommodity Chemicals0.16%+0.16 ppGold0.15%+0.15 ppSteel0.12%+0.12 ppMetal, Glass & Plastic Containers0.10%+0.10 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.16%+0.162 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.16%
Industry change · 12M
+0.16 pp
Construction Materials · contribution
+0.162 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Vulcan Materials Company →
VMC
United States$24.7bn0.082%-0.005 pp+0.082 pp+56.3%Yes
Martin Marietta Materials →
MLM
United States$23.8bn0.080%-0.002 pp+0.079 pp+89.2%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.