Stocks to watch on the Australian stock exchange:

AWC – ALUMINA – down 19 cents, or 6.8 per cent, at $2.62

S32 – SOUTH32 – down 38 cents, or or 9.6 per cent, at $3.58

Aluminium prices have posted their biggest one-day fall since 2010 after the US extended a deadline for companies to finish business with Russian aluminium producer Rusal.

BLD – BORAL – down 65 cents, or 8.6 per cent, at $6.88

 

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A prolonged US winter and heavy rain in Texas contributed to weaker than expected earnings in Boral’s biggest market in the three months to March 31.

FMG – FORTESCUE METALS – down 11 cents, or 2.4 per cent, at $4.57

Iron ore specialist Fortescue Metals shipped less product at a higher cost in the three months to March, following cyclone activity across its West Australian operations.

ILU – ILUKA – down 26 cents, or 2.2 per cent, at $11.60

Iluka Resources has been served with a class action alleging the mineral sands miner misled the market six years ago.

MQA – MACQUARIE ATLAS – up 11 cents, or 1.9 per cent, at $6.02

The global toll roads operator said three of its four roads generated higher toll revenue and traffic volumes during the March quarter.