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
1.10%
Industry change · 12M
+0.57 pp
Cable & Satellite · contribution
+0.575 pp
Company participation
50%
of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

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

CompanyCountryMarket capUniverse weight3M contribution12M contribution12M price returnAbove 6M weight average
Charter Communications →
CHTR
United States$140.2bn0.692%+0.031 pp+0.396 pp+56.3%Yes
Comcast →
CMCSA
United States$83.5bn0.412%-0.040 pp+0.179 pp+20.4%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.