Why a2 Milk, Atlas Arteria, Audio Pixels, & Nickel Mines shares are sinking

The S&P/ASX 200 Index (ASX: XJO) is on course to end the day with a decline. In afternoon trade, the benchmark index is down 0.3% to 7,023.3 points.

Four ASX shares that have fallen more than most are listed below. Here’s why they are sinking:

The a2 Milk share price is down a further 3.5% to $6.91. Investors continue to sell this infant formula company’s shares amid concerns that it will fall short of its downgraded guidance in FY 2021. This is due to signs of discounting by Australian retailers and weak prices on Chinese ecommerce platforms.

The Atlas Arteria Group (ASX: ALX)

The Atlas Arteria share price is down 2.5% to $5.96. This toll road operator’s shares have come under pressure today after revealing that the…