WhichIndex

Which indexes is GSK in?

GSK is in 2 of the 57 indexes we track. Its largest weight is 2.79% in the FTSE 100, where it ranks #9 of 100.

Tickers
GSK (London Stock Exchange)
GSK (NYSE)
Country
United Kingdom
Sector
Health Care
Size
Large cap (market cap $10–200 billion; exact figure in the ranking)
Data as of
16 Oct 2026

Member of 2 indexes

GSK's index memberships
IndexWeight %RankIndex size
FTSE 1002.799100
NYSE Composite0.21 (est.)1121865

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.

GSK across every index we track

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

Fewermore

Neighbours by weight

The members ranked just above and just below GSK in each index
IndexRanked aboveRanked below
FTSE 100Rio Tinto (2.95%)Lloyds Banking Group (2.38%)
NYSE CompositeFreeport-McMoRan (0.21%)Trane Technologies (0.21%)