Total revenue in the six months of $139.1million was an increase of 86% on the previous corresponding period (pcp).
Group operating profit of $18.7million was an increase of more than four times the profit in the pcp.
Mr Babidge said the result included expensing establishment costs in the United States and United Kingdom markets of $8.1million, record operating performance in Australia and New Zealand and significant growth in China.
Reported profit was up $100,000 to $10.1million.
The full-year forecast had been revised up, with group revenue in the range of $335million to $350million and group operating profit forecast to be in the range of $45million to $49million.
After the announcement, a2 shares increased 27% to $2.59, after earlier touching the record $2.60 mark.
The shares closed on Monday at $1.84 and closed on Tuesday at $2.03 - before the profit announcement.
Craigs Investment Partners broker Chris Timms said he normally expected a share price to trade up on the back of such a positive result.
‘‘But given the strong share price performance into the result, the hard part is judging how much the market was already factoring in. If we had to pick it, our sense is the stock most likely trades higher on momentum.''
Mr Babidge said the company's strategic agenda focused on growing and broadening the Australia-New Zealand milk business and developing growth opportunities in select international markets.
After a period of development, a2 Platinum infant formula had become a significant contributor to growth and earnings in Australasia and China.
There were positive prospects for growth of a2 whole milk powder, first launched late last financial year.
‘‘We are pleased with the growing level of distribution for a2 milk in California and the repositioning of our brand in the UK during the period.''
Cash on hand at the end of December was $36.4million, reflecting positive cash inflows from equity-raising activities, partially offset by an investment in working capital to fund the significant growth of infant formula, he said.
A significantly improved operating cash flow was forecast for the second half of the financial year.
The decision to gain an official listing on the ASX in March last year had achieved the key objective of broadening investor participation alongside the existing NZX main board listing.
As at February 10, 2016, the number of Australian investors had increased to more than 22,000, representing about 64% of shares on issue.
