WhichIndex

Which indexes is Onex Corporation in?

Onex Corporation is in 1 of the 57 indexes we track. Its largest weight is 0.11% in the S&P/TSX Composite, where it ranks #122 of 216.

Ticker
ONEX (Toronto Stock Exchange)
Country
Canada
Sector
Financials
Size
Mid cap (market cap $2–10 billion; exact figure in the ranking)
Data as of
15 Oct 2026

Member of 1 index

Onex Corporation's index memberships
IndexWeight %RankIndex size
S&P/TSX Composite0.11122216

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.

Onex Corporation across every index we track

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

Fewermore

Neighbours by weight

The members ranked just above and just below Onex Corporation in each index
IndexRanked aboveRanked below
S&P/TSX CompositeNorthland Power Inc. (0.11%)Skeena Resources Limited (0.11%)