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
Construction Materials · weight
0.16%
Industry change · 12M
-0.02 pp
Construction Materials · contribution
-0.023 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Aug 2024 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Vulcan Materials Company →
VMC
United States$32.4bn0.078%+0.014 pp-0.014 pp+13.2%Yes
Martin Marietta Materials →
MLM
United States$32.6bn0.079%+0.011 pp-0.009 pp+20.2%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.