A2 Milk shares last week jumped to $12.56, valuing a2 Company at $9.1 billion, toppling Auckland International Airport at $7.75b, Fisher & Paykel Healthcare at $7.37b and Meridian Energy at $7.29b.
Fonterra, which has a market capitalisation of $9.5b on NZX despite not being a public company, recently joined forces with a2 to process and market infant formula and other products.