Stocks to watch on the Australian stock exchange at noon on Wednesday:
AGL - AGL - down 31 cents, or 2.18 per cent, at $13.88
An investigation into a NSW mid-north coast gas project where dangerous chemicals have been detected in a water storage tank will be carried out as soon as possible and the results made public, the state resources minister says.
AZJ - AURIZON - up 7.5 cents, or 1.56 per cent, at $4.875
Aurizon has re-affirmed its full year rail volumes guidance despite a decline in coal and iron ore volumes in the December quarter.
BKN - BRADKEN - down $1.335, or 32.48 per cent, at $2.775
Tumbling commodity prices have stymied a $872 million takeover bid for engineering group Bradken, stripping more than 30 per cent from its shares.
DLS - DRILLSEARCH ENERGY - up 3.25 cents, or 4.30 per cent, at 78.75 cents
Drillsearch Energy says it is on track to meet its full year production target, but a steep drop in oil prices has caused a fall in revenue.
EHE - ESTIA HEALTH - up 32 cents, or 7.14 per cent, at $4.80
Recently-listed agedcare provider Estia Health says it is on track to meet its prospectus forecasts as more people enter its nursing homes and the number of high-care residents increases.
OZL - OZ MINERALS - up 13 cents, or 3.78 per cent, at $3.57
Oz Minerals has beaten its full year production guidance and launched a strategic review of its operations.
VET - VOCATION - in suspension, last traded at 25 cents
Vocation chief executive Mark Hutchinson will step down after the troubled education and training group flagged a first half loss of around $27 million.