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›Communication Services›Integrated Telecommunication Services›Integrated Telecommunication Services
Integrated Telecommunication Services · weight
1.61%
Industry change · 12M
-0.69 pp
Integrated Telecommunication Services · contribution
-0.693 pp
Company participation
100%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
AT&T →
T
United States$154.8bn0.627%+0.626 pp-0.431 pp-19.6%Yes
Verizon →
VZ
United States$243.1bn0.984%+0.983 pp-0.262 pp-0.1%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.