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

Financials14.2%+1.72 ppInformation Technology28.5%+1.35 ppConsumer Discretionary7.8%+0.98 ppEnergy2.5%+0.82 ppMaterials3.2%+0.05 ppReal Estate3.2%+0.01 ppHealth Care16.5%-0.40 ppUtilities3.0%-0.41 ppCommunication Services3.9%-1.00 ppConsumer Staples7.0%-1.51 ppIndustrials10.2%-1.61 pp

2 · Industry

Inside Materials

Specialty Chemicals0.94%+0.24 ppGold0.14%-0.10 ppPaper & Plastic Packaging Products & Materials0.48%-0.09 ppIndustrial Gases0.77%-0.07 ppCopper0.18%+0.07 ppSteel0.11%+0.04 ppMetal, Glass & Plastic Containers0.10%-0.04 ppCommodity Chemicals0.14%-0.02 ppFertilizers & Agricultural Chemicals0.20%+0.02 ppConstruction Materials0.17%-0.00 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.17%-0.003 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.17%
Industry change · 12M
-0.00 pp
Construction Materials · contribution
-0.003 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Oct 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$25.2bn0.084%+0.002 pp-0.007 pp+32.4%Yes
Martin Marietta Materials →
MLM
United States$24.5bn0.082%+0.004 pp+0.003 pp+48.5%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.