WhichIndex

Which indexes is Comcast in?

Comcast is in 3 of the 57 indexes we track. Its largest weight is 0.32% in the Nasdaq-100, where it ranks #60 of 100.

Ticker
CMCSA (Nasdaq)
Country
United States
Sector
Communication Services
Size
Large cap (market cap $10–200 billion; exact figure in the ranking)
Data as of
16 Oct 2026

Member of 3 indexes

Comcast's index memberships
IndexWeight %RankIndex size
Nasdaq-1000.3260100
Nasdaq Composite0.15 (est.)703373
S&P 5000.12140502

Source: each index's own source, listed on its page. How we source this. Weights are estimates where marked. This page is refreshed when a membership changes or a weight moves by more than 10%; each index page has the daily figures.

Comcast across every index we track

Lit tiles are the indexes Comcast belongs to; the shade is its weight there.

Fewermore

Neighbours by weight

The members ranked just above and just below Comcast in each index
IndexRanked aboveRanked below
Nasdaq-100Regeneron Pharmaceuticals (0.33%)DoorDash (0.32%)
Nasdaq CompositeRegeneron Pharmaceuticals (0.16%)Lumentum (0.15%)
S&P 500Cigna (0.12%)EOG Resources (0.12%)

Not in

Among the indexes we track for United States.