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

Consumer Discretionary52.2%+52.24 ppInformation Technology13.5%+13.45 ppHealth Care8.1%+8.05 ppFinancials7.4%+7.34 ppIndustrials6.6%+6.58 ppConsumer Staples3.8%+3.78 ppCommunication Services2.4%+2.43 ppMaterials1.7%+1.66 ppReal Estate1.5%+1.53 ppEnergy1.2%+1.20 ppUtilities1.7%-98.26 pp

2 · Industry

Inside Materials

Industrial Gases0.41%+0.41 ppSpecialty Chemicals0.40%+0.40 ppPaper & Plastic Packaging Products & Materials0.27%+0.27 ppFertilizers & Agricultural Chemicals0.11%+0.11 ppGold0.09%+0.09 ppCopper0.09%+0.09 ppCommodity Chemicals0.09%+0.09 ppConstruction Materials0.08%+0.08 ppMetal, Glass & Plastic Containers0.05%+0.05 ppSteel0.05%+0.05 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.08%+0.085 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.08%
Industry change · 12M
+0.08 pp
Construction Materials · contribution
+0.085 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Mar 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$22.4bn0.044%-0.036 pp+0.044 pp+57.8%No
Martin Marietta Materials →
MLM
United States$20.9bn0.041%-0.031 pp+0.041 pp+79.1%No

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.