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 Technology34.6%+14.94 ppFinancials12.3%+4.16 ppConsumer Discretionary12.0%+4.02 ppIndustrials10.1%+2.81 ppConsumer Staples7.3%+1.96 ppCommunication Services2.7%+0.87 ppHealth Care11.2%+0.85 ppUtilities2.9%+0.76 ppReal Estate2.4%+0.60 ppEnergy2.3%+0.18 ppMaterials2.3%-31.15 pp

2 · Industry

Inside Materials

Paper & Plastic Packaging Products & Materials0.33%-31.37 ppIndustrial Gases0.64%+0.13 ppSpecialty Chemicals0.53%+0.06 ppFertilizers & Agricultural Chemicals0.17%+0.05 ppGold0.13%+0.04 ppCommodity Chemicals0.04%-0.03 ppConstruction Materials0.15%+0.02 ppCopper0.13%-0.02 ppSteel0.10%-0.02 ppMetal, Glass & Plastic Containers0.03%-0.01 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.15%+0.022 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.15%
Industry change · 12M
+0.02 pp
Construction Materials · contribution
+0.022 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

May 2025 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Vulcan Materials Company →
VMC
United States$35.0bn0.079%+0.006 pp+0.015 pp+4.4%Yes
Martin Marietta Materials →
MLM
United States$33.0bn0.075%+0.009 pp+0.007 pp-3.7%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.