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 Technology17.9%+7.76 ppHealth Care16.6%+6.64 ppFinancials15.9%+6.02 ppIndustrials13.4%+5.24 ppConsumer Staples9.3%+4.44 ppCommunication Services5.4%+3.44 ppReal Estate4.0%+2.04 ppUtilities3.9%+2.00 ppMaterials2.9%+1.73 ppEnergy3.6%+0.89 ppConsumer Discretionary7.2%-40.20 pp

2 · Industry

Inside Materials

Industrial Gases0.83%+0.71 ppSpecialty Chemicals0.79%+0.31 ppCommodity Chemicals0.17%+0.17 ppFertilizers & Agricultural Chemicals0.22%+0.14 ppGold0.18%+0.12 ppConstruction Materials0.19%+0.10 ppMetal, Glass & Plastic Containers0.15%+0.10 ppPaper & Plastic Packaging Products & Materials0.18%+0.06 ppSteel0.08%+0.02 ppCopper0.07%+0.01 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.19%+0.100 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.19%
Industry change · 12M
+0.10 pp
Construction Materials · contribution
+0.100 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Aug 2019 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Vulcan Materials Company →
VMC
United States$18.7bn0.102%+0.006 pp+0.054 pp+28.8%Yes
Martin Marietta Materials →
MLM
United States$15.8bn0.086%+0.009 pp+0.046 pp+28.9%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.