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›Cable & Satellite›Cable & Satellite
Cable & Satellite · weight
0.53%
Industry change · 12M
-0.52 pp
Cable & Satellite · contribution
-0.523 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Charter Communications →
CHTR
United States$89.7bn0.296%+0.002 pp-0.287 pp-12.2%Yes
Comcast →
CMCSA
United States$70.7bn0.233%-0.017 pp-0.236 pp-12.1%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.