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 Technology29.9%+5.36 ppConsumer Discretionary12.3%+1.32 ppMaterials2.8%-0.26 ppCommunication Services2.9%-0.31 ppIndustrials9.8%-0.31 ppReal Estate2.9%-0.32 ppUtilities2.9%-0.55 ppEnergy3.3%-0.63 ppConsumer Staples6.8%-0.92 ppFinancials11.2%-1.15 ppHealth Care15.3%-2.24 pp

2 · Industry

Inside Materials

Fertilizers & Agricultural Chemicals0.18%-0.11 ppPaper & Plastic Packaging Products & Materials0.35%-0.10 ppSpecialty Chemicals0.70%-0.07 ppSteel0.19%+0.06 ppGold0.10%-0.03 ppCopper0.17%-0.03 ppConstruction Materials0.18%+0.02 ppIndustrial Gases0.81%+0.01 ppCommodity Chemicals0.11%-0.01 ppMetal, Glass & Plastic Containers0.05%-0.01 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.18%+0.018 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.18%
Industry change · 12M
+0.02 pp
Construction Materials · contribution
+0.018 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Nov 2023 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Martin Marietta Materials →
MLM
United States$28.7bn0.090%+0.002 pp+0.012 pp+27.6%Yes
Vulcan Materials Company →
VMC
United States$28.4bn0.088%-0.004 pp+0.006 pp+17.5%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.