Stocks to watch on the Australian stock exchange at noon on Tuesday:
BXB - BRAMBLES - down 32.0 cents, or 2.83 per cent, at $10.99
Logistics giant Brambles has reaffirmed its full year profit guidance, despite slower-than-expected sales growth from its pallets business.
GEM - G8 EDUCATION - down 23.0 cents, or 6.46 per cent, at $3.33
Childcare centre operator G8 Education is facing steeper costs ahead of new laws on staff to child ratios coming into force in 2016.
LEI - LEIGHTON HOLDINGS - up 22.0 cents, or 1.09 per cent, at $20.37
Leighton Holdings shareholders are set to decide whether to change the engineering construction giant's 66-year-old name.
NRT - NOVOGEN - down 11.75 cents, or 28.31 per cent, at 29.75 cents
Cancer therapy biotech Novogen has placed its shares in a trading halt ahead of an expected announcement about a capital raising.
OSH - OIL SEARCH - up 1.00 cent, or 0.12 per cent, at $8.11
Oil Search remains on track to meet its full year production forecasts despite reporting a dip in the March quarter.
RIO - RIO TINTO - up 82 cents, or 1.50 per cent, at $55.48
Rio Tinto's iron ore shipments have fallen 12 per cent during the March quarter, a period when it was largely blamed for over-supplying and pushing down the price of Australia's top export.
SGT - SINGAPORE TELECOMMUNICATIONS - down 2.00 cents, or 0.47 per cent, at $4.19
The Singapore-based company behind Optus will ditch its Australian listing due to a lack of interest in its shares on the ASX.
WES - WESFARMERS - up 27.0 cents, or 0.64 per cent, at $42.78
WOW - WOOLWORTHS - up 33.0 cents, or 1.18 per cent, at $28.38
Dairy farmers have told a Senate inquiry a supermarket price war has cost them $200 million and created a shortage of milk in Queensland.