The shares have slid dramatically in the past year, having traded above $21 in August. LAWRENCE SMITH/Stuff A nearly 13 per cent slide in a2 Milk weighed heavily on the New Zealand sharemarket on Monday. A2 Milk said on Monday it expects revenue of between $1.2 billion and $1.25b in the year to the end of June, down from its $1.4b forecast in February, and $1.73b last year, as the Covid-19 pandemic disrupts sales of its a2 milk products, including infant formula, to China. Border closures and trade disruptions meant fewer tourists and international students shipped its products to China, known as the daigou trade.