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 Discretionary10.2%+2.34 ppEnergy4.0%+1.71 ppHealth Care18.2%+1.50 ppConsumer Staples7.9%+0.78 ppUtilities3.6%+0.55 ppIndustrials10.4%+0.39 ppMaterials3.2%-0.09 ppReal Estate3.2%-0.18 ppCommunication Services3.2%-0.49 ppFinancials12.4%-0.57 ppInformation Technology23.8%-5.95 pp

2 · Industry

Inside Materials

Specialty Chemicals0.76%-0.19 ppSteel0.18%+0.08 ppFertilizers & Agricultural Chemicals0.27%+0.06 ppIndustrial Gases0.83%+0.04 ppMetal, Glass & Plastic Containers0.06%-0.04 ppGold0.14%-0.02 ppConstruction Materials0.16%-0.02 ppPaper & Plastic Packaging Products & Materials0.46%+0.01 ppCommodity Chemicals0.13%-0.01 ppCopper0.20%-0.00 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.16%-0.017 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.16%
Industry change · 12M
-0.02 pp
Construction Materials · contribution
-0.017 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Dec 2022 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Martin Marietta Materials →
MLM
United States$21.0bn0.076%-0.003 pp-0.012 pp-22.7%No
Vulcan Materials Company →
VMC
United States$23.3bn0.084%+0.002 pp-0.004 pp-14.9%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.