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 Technology38.1%+4.07 ppUtilities2.8%-0.02 ppConsumer Discretionary12.0%-0.02 ppEnergy2.3%-0.32 ppMaterials2.1%-0.33 ppReal Estate2.1%-0.38 ppIndustrials9.4%-0.40 ppCommunication Services2.2%-0.48 ppHealth Care11.5%-0.58 ppConsumer Staples6.2%-0.72 ppFinancials11.4%-0.82 pp

2 · Industry

Inside Materials

Industrial Gases0.49%-0.16 ppSpecialty Chemicals0.46%-0.12 ppGold0.19%+0.09 ppCommodity Chemicals0.03%-0.03 ppPaper & Plastic Packaging Products & Materials0.33%-0.03 ppCopper0.12%-0.02 ppFertilizers & Agricultural Chemicals0.13%-0.02 ppMetal, Glass & Plastic Containers0.03%-0.01 ppConstruction Materials0.15%-0.01 ppSteel0.12%-0.01 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.15%-0.014 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.15%
Industry change · 12M
-0.01 pp
Construction Materials · contribution
-0.014 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Martin Marietta Materials →
MLM
United States$37.6bn0.074%-0.003 pp-0.007 pp+4.5%No
Vulcan Materials Company →
VMC
United States$39.3bn0.077%-0.003 pp-0.007 pp+3.9%No

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.