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

Consumer Discretionary11.3%+4.18 ppEnergy3.7%+0.58 ppIndustrials10.3%+0.07 ppUtilities3.2%+0.05 ppMaterials3.2%+0.02 ppReal Estate3.2%+0.00 ppHealth Care16.6%-0.02 ppConsumer Staples7.5%-0.07 ppCommunication Services3.3%-0.59 ppFinancials12.6%-0.72 ppInformation Technology25.1%-3.51 pp

2 · Industry

Inside Materials

Industrial Gases0.83%+0.13 ppSteel0.23%+0.10 ppSpecialty Chemicals0.77%-0.06 ppGold0.12%-0.06 ppMetal, Glass & Plastic Containers0.06%-0.04 ppCopper0.21%-0.03 ppPaper & Plastic Packaging Products & Materials0.43%-0.03 ppFertilizers & Agricultural Chemicals0.28%+0.02 ppCommodity Chemicals0.14%-0.01 ppConstruction Materials0.16%-0.00 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.16%-0.003 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.16%
Industry change · 12M
-0.00 pp
Construction Materials · contribution
-0.003 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Feb 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$22.3bn0.079%+0.001 pp-0.004 pp-4.6%Yes
Vulcan Materials Company →
VMC
United States$24.1bn0.085%+0.002 pp+0.001 pp+0.4%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.