Foster's Group will not be drawn on speculation that it is preparing for a A$100m writedown and A$150m in cost cuts to its wine operations. Melbourne's Herald Sun reported last week that the company is looking to cut costs as it restructures its wine business.

Foster's launched a review of its global wine business to consider everything from grape sourcing to distribution, after its Beringer Blass Wine Estates operations in the US were hit by a glut of cheap wine and the strong Australian dollar.

A Foster's spokesperson told AAP that the company would not be commenting about possible outcomes of the wine review until they were announced.

"We've told the market that it will take place before the end of June," the spokesperson told the news agency.

"Obviously, we're doing a full analysis and we'll be presenting those findings to the market."

In the group's first half results, announced in February, Beringer Blass Wine Estates' earnings before interest, tax and amortisation fell by 28.1% to A$182.4m.