In its outlook for the 2021 financial year, a2 Milk said there is "the potential for moderation of economic activity" that could impact consumer behaviour in its core markets, most notably China. Operating earnings (ebitda) margin is forecast at between 30 and 31 per cent.
Amongst the energy stocks, Mercury was down 14c or 2.7 per cent to $5.04, Contact declined 6c to $6.28, Meridian fell 11.5c or 2.29 per cent to $4.90, Vector slipped 6c to $4.50 but Trustpower was up 11c to $7.15.
Restaurants Brands decreased 40c or 3.29 per cent to $11.75, Auckland International Airport fell 9c to $7.01and Tourism Holdings was down 8c or 3.79per cent to $2.03. These three stocks have been hit hard by the Covid disruption and lockdowns.
It was a rough time on Wall Street overnight as the leading technology stocks faced sharp drops after their stellar run this year. The tech-heavy Nasdaq Composite Index slumped 4.11 per cent to 10,847.69, falling 7.82 per cent in four trading days. The Nasdaq has entered correction territory, defined as a 10 per cent drop from its most recent peak of 12,056.44.
Apple was down 6.73 per cent to US$112.82 ($170.23),
Microsoft slipped 5.41 per cent to US$202.66,
Amazon declined 4.39 per cent to US$3149.84,
Facebook lost 4.09 per cent to US$271.16,
interactive graphics company Nvidia fell 5.62 per cent to US$476.52,
Alphabet was down 3.64 per cent to US$1523.60, and
Netflix declined 1.75 per cent to US$507.02.
Electric vehicle maker Tesla joined the rout, falling 21 per cent to US$330.21 in its worst trading day in six months. Tesla has been excluded from the S&P 500. Rival Nikola Corp soared 40.79 per cent to US$50.05 after signing a strategic partnership with General Motors, with GM taking an 11 per cent stake.
The Dow Jones Industrial Index fell 632.42 points or 2.25 per cent to 28,133.31 and the S&P 500 was down 2.78 per cent to 3331.84. And market commentators feared the worst was not over.
Investors in the United States were rattled by renewed US-China tensions, uncertainty about the November presidential election and the fear that Covid-19 will re-emerge in the cooler winter months. President Donald Trump said he wasn't "happy at all" with China and spoke about an economic "decoupling".
On the Australian market, Kiwi buy now, pay later online company Laybuy fell 6 per cent A$1.935 ($2.11) in its third day of trading after listing earlier this week at A$1.41.