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 Technology17.6%+1.59 ppEnergy5.1%+0.44 ppUtilities3.3%+0.18 ppReal Estate3.4%+0.15 ppConsumer Discretionary7.1%+0.03 ppMaterials2.1%-0.02 ppHealth Care16.6%-0.10 ppCommunication Services3.2%-0.30 ppIndustrials15.2%-0.43 ppFinancials18.0%-0.50 ppConsumer Staples8.4%-1.02 pp

2 · Industry

Inside Materials

Paper & Plastic Packaging Products & Materials0.25%-0.02 ppSpecialty Chemicals0.86%-0.02 ppCopper0.15%-0.01 ppFertilizers & Agricultural Chemicals0.12%+0.01 ppIndustrial Gases0.21%+0.00 ppConstruction Materials0.19%+0.00 ppGold0.13%+0.00 ppSteel0.12%+0.00 ppMetal, Glass & Plastic Containers0.08%+0.00 ppCommodity Chemicals0.00%+0.00 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.19%+0.004 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.19%
Industry change · 12M
+0.00 pp
Construction Materials · contribution
+0.004 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

May 2018 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Martin Marietta Materials →
MLM
United States$14.0bn0.085%+0.008 pp+0.003 pp-1.9%Yes
Vulcan Materials Company →
VMC
United States$16.9bn0.102%+0.009 pp+0.000 pp-5.2%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.