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
2.21%
Industry change · 12M
-0.04 pp
Integrated Telecommunication Services · contribution
-0.037 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Mar 2018 · sorted by absolute contribution to 12-month change

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Verizon →
VZ
United States$195.1bn1.197%-0.061 pp-0.061 pp-11.6%No
AT&T →
T
United States$165.4bn1.015%+0.024 pp+0.024 pp-4.8%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.