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 Discretionary48.1%+41.00 ppMaterials1.1%-1.04 ppUtilities1.9%-1.28 ppReal Estate1.8%-1.40 ppCommunication Services1.9%-1.53 ppEnergy2.7%-2.04 ppConsumer Staples4.8%-4.56 ppInformation Technology10.0%-6.01 ppHealth Care10.1%-6.67 ppIndustrials8.1%-7.53 ppFinancials9.5%-8.94 pp

2 · Industry

Inside Materials

Specialty Chemicals0.47%-0.41 ppPaper & Plastic Packaging Products & Materials0.12%-0.15 ppConstruction Materials0.08%-0.10 ppCopper0.06%-0.10 ppIndustrial Gases0.12%-0.09 ppGold0.05%-0.07 ppSteel0.06%-0.06 ppFertilizers & Agricultural Chemicals0.08%-0.03 ppMetal, Glass & Plastic Containers0.05%-0.03 ppCommodity Chemicals0.00%+0.00 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.08%-0.101 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.08%
Industry change · 12M
-0.10 pp
Construction Materials · contribution
-0.101 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Vulcan Materials Company →
VMC
United States$14.7bn0.047%-0.057 pp-0.055 pp-17.3%No
Martin Marietta Materials →
MLM
United States$11.5bn0.037%-0.049 pp-0.045 pp-19.7%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.