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 Technology18.1%+8.41 ppFinancials16.5%+6.93 ppHealth Care16.8%+6.27 ppIndustrials13.7%+6.24 ppConsumer Staples8.8%+3.60 ppCommunication Services5.3%+3.22 ppMaterials3.2%+1.80 ppUtilities3.7%+1.59 ppReal Estate3.6%+1.58 ppEnergy3.4%+1.00 ppConsumer Discretionary7.0%-40.65 pp

2 · Industry

Inside Materials

Paper & Plastic Packaging Products & Materials0.61%+0.50 ppIndustrial Gases0.82%+0.41 ppSpecialty Chemicals0.78%+0.29 ppCommodity Chemicals0.20%+0.20 ppFertilizers & Agricultural Chemicals0.19%+0.11 ppGold0.16%+0.10 ppConstruction Materials0.18%+0.09 ppMetal, Glass & Plastic Containers0.11%+0.05 ppCopper0.08%+0.03 ppSteel0.09%+0.02 pp

3 · Sub-industry

Inside Construction Materials

Construction Materials0.18%+0.093 pp
Concentrated

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

View all contributions →
Construction Materials · weight
0.18%
Industry change · 12M
+0.09 pp
Construction Materials · contribution
+0.093 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Nov 2019 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Vulcan Materials Company →
VMC
United States$18.8bn0.095%-0.007 pp+0.048 pp+35.5%No
Martin Marietta Materials →
MLM
United States$16.8bn0.085%-0.002 pp+0.045 pp+42.0%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.