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 Discretionary53.6%+53.57 ppInformation Technology13.3%+13.32 ppHealth Care7.9%+7.89 ppFinancials7.2%+7.19 ppIndustrials6.2%+6.17 ppConsumer Staples3.6%+3.57 ppCommunication Services2.4%+2.43 ppMaterials1.6%+1.59 ppReal Estate1.5%+1.47 ppEnergy1.2%+1.18 ppUtilities1.5%-98.38 pp

2 · Industry

Inside Materials

Specialty Chemicals0.40%+0.40 ppIndustrial Gases0.37%+0.37 ppPaper & Plastic Packaging Products & Materials0.26%+0.26 ppFertilizers & Agricultural Chemicals0.11%+0.11 ppCopper0.10%+0.10 ppCommodity Chemicals0.09%+0.09 ppGold0.09%+0.09 ppConstruction Materials0.09%+0.09 ppMetal, Glass & Plastic Containers0.06%+0.06 ppSteel0.04%+0.04 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.09%+0.086 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.09%
Industry change · 12M
+0.09 pp
Construction Materials · contribution
+0.086 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Feb 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$22.1bn0.044%-0.034 pp+0.044 pp+40.3%No
Martin Marietta Materials →
MLM
United States$21.0bn0.042%-0.028 pp+0.042 pp+49.4%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.