Infant formula marketer a2 Milk said its application to the US Food and Drug Administration (FDA) for approval to sell infant formula to the US was under "active review" but that there was no certainty around timing.
The company's shares rallied by 43 cents or 8.6 per cent to $5.42 today on the back of speculation in the Australian Financial Review (AFR) that approval was imminent.
The stock went into a trading halt before a2 Milk released a short statement to the NZX and the ASX.
In it, a2 milk noted that the AFR had suggested the company was nearing approval from the FDA and that such approval could be received as soon as this week.
"The company wishes to confirm that while we have been informed by the FDA that our application is under active review, at this stage there is no certainty as to the outcome of the application or the timing of any approval," a2 Milk said.