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 Technology28.3%+1.04 ppFinancials11.9%+0.79 ppConsumer Discretionary12.0%+0.65 ppIndustrials10.6%+0.56 ppConsumer Staples7.5%-0.03 ppMaterials2.9%-0.23 ppEnergy3.3%-0.30 ppReal Estate2.7%-0.32 ppCommunication Services2.8%-0.43 ppUtilities2.7%-0.60 ppHealth Care15.4%-1.13 pp

2 · Industry

Inside Materials

Paper & Plastic Packaging Products & Materials0.33%-0.10 ppFertilizers & Agricultural Chemicals0.18%-0.06 ppConstruction Materials0.21%+0.05 ppIndustrial Gases0.77%-0.04 ppSpecialty Chemicals0.72%-0.02 ppCommodity Chemicals0.11%-0.02 ppGold0.11%-0.02 ppCopper0.19%-0.01 ppSteel0.20%-0.00 ppMetal, Glass & Plastic Containers0.06%-0.00 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.21%+0.052 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.21%
Industry change · 12M
+0.05 pp
Construction Materials · contribution
+0.052 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Mar 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$38.0bn0.105%+0.013 pp+0.030 pp+74.0%Yes
Vulcan Materials Company →
VMC
United States$36.1bn0.100%+0.010 pp+0.022 pp+60.3%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.