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 Technology29.3%+4.19 ppConsumer Discretionary12.5%+1.15 ppIndustrials10.5%+0.21 ppReal Estate2.8%-0.41 ppMaterials2.8%-0.42 ppCommunication Services2.8%-0.51 ppUtilities2.6%-0.62 ppEnergy3.1%-0.63 ppConsumer Staples6.6%-0.85 ppFinancials11.6%-1.05 ppHealth Care15.5%-1.06 pp

2 · Industry

Inside Materials

Paper & Plastic Packaging Products & Materials0.32%-0.11 ppFertilizers & Agricultural Chemicals0.18%-0.10 ppIndustrial Gases0.77%-0.06 ppSpecialty Chemicals0.72%-0.05 ppCopper0.16%-0.05 ppConstruction Materials0.20%+0.04 ppSteel0.19%-0.03 ppCommodity Chemicals0.11%-0.03 ppGold0.10%-0.02 ppMetal, Glass & Plastic Containers0.06%-0.00 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.20%+0.040 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.20%
Industry change · 12M
+0.04 pp
Construction Materials · contribution
+0.040 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Feb 2024 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Martin Marietta Materials →
MLM
United States$35.7bn0.102%+0.013 pp+0.024 pp+61.6%Yes
Vulcan Materials Company →
VMC
United States$35.2bn0.101%+0.012 pp+0.016 pp+48.2%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.