WhichIndex

Which indexes is a2 Milk Company in?

a2 Milk Company is in 2 of the 57 indexes we track. Its largest weight is 3.78% (estimated from market cap) in the S&P/NZX 50, where it ranks #8 of 48.

Tickers
ATM (XNZE)
A2M (ASX)
Country
New Zealand
Sector
Consumer Staples
Size
Mid cap (market cap $2–10 billion; exact figure in the ranking)
Data as of
15 Oct 2026

Member of 2 indexes

a2 Milk Company's index memberships
IndexWeight %RankIndex size
S&P/NZX 503.78 (est.)848
S&P/ASX 2000.1987200

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. Older source dates: S&P/NZX 50 30 Sep 2026.

a2 Milk Company across every index we track

Lit tiles are the indexes a2 Milk Company belongs to; the shade is its weight there.

Fewermore

Neighbours by weight

The members ranked just above and just below a2 Milk Company in each index
IndexRanked aboveRanked below
S&P/NZX 50Mainfreight Limited (4.26%)Port of Tauranga Limited (3.52%)
S&P/ASX 200HUB24 (0.19%)Endeavour Group (0.18%)