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 Technology19.1%+9.77 ppFinancials16.2%+6.99 ppHealth Care16.6%+6.66 ppIndustrials13.4%+5.77 ppConsumer Staples8.8%+3.81 ppCommunication Services5.2%+3.23 ppUtilities3.9%+1.91 ppMaterials3.1%+1.72 ppReal Estate3.6%+1.56 ppEnergy3.2%+0.74 ppConsumer Discretionary6.9%-42.15 pp

2 · Industry

Inside Materials

Paper & Plastic Packaging Products & Materials0.60%+0.48 ppIndustrial Gases0.80%+0.38 ppSpecialty Chemicals0.74%+0.28 ppCommodity Chemicals0.17%+0.17 ppGold0.18%+0.12 ppFertilizers & Agricultural Chemicals0.19%+0.11 ppConstruction Materials0.17%+0.09 ppMetal, Glass & Plastic Containers0.12%+0.06 ppCopper0.08%+0.02 ppSteel0.07%+0.01 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.17%+0.093 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.17%
Industry change · 12M
+0.09 pp
Construction Materials · contribution
+0.093 pp
Company participation
0%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Jan 2020 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Vulcan Materials Company →
VMC
United States$18.7bn0.092%-0.006 pp+0.048 pp+40.7%No
Martin Marietta Materials →
MLM
United States$16.5bn0.081%-0.004 pp+0.045 pp+50.7%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.