Stocks to watch on the Australian Securities Exchange:

ANZ – ANZ BANKING GROUP – down 42 cents, or 1.4 per cent, at $29.12

CBA – COMMONWEALTH BANK – down $1.50, or 1.8 per cent, at $81.11

NAB – NATIONAL AUSTRALIA BANK – down 54 cents, or 1.7 per cent, at $30.96

WBC – WESTPAC – down 42.5 cents, or 1.3 per cent, at $32.505

Banks will be forced to explain their fees and mortgage rate hikes as they are ordered to pay a new levy from the federal government, with Treasurer Scott Morrison putting ACCC investigators on the case until June 2018.

ORL – OROTON GROUP – down 25.5 cents, or 18.9 per cent, at $1.095

Oroton Group expects its underlying full-year earnings to fall by as much as 85 per cent due to a continued slide in sales.

WES – WESFARMERS – down 61 cents, or 1.39 per cent, at $43.32

Wesfarmers has decided against spinning off Officeworks via an initial public offering due to the market’s current dim view of retail stocks.

OSH – OIL SEARCH – down 4.0 cents, or 0.5 per cent, at $7.34

ORG – ORIGIN ENERGY – down 10.5 cents, or 1.3 per cent, at $7.725

STO – SANTOS – down 7.5 cents, or 2.1 per cent, at $3.535

WPL – WOODSIDE PETROLEUM – down 4.0 cents, or 0.1 per cent, at $32.45

OPEC members have voiced support for prolonging supply cuts through March 2018 to reduce a global crude glut.

NCM – NEWCREST MINING – up 51 cents, or 2.5 per cent, at $20.73

EVN – EVOLUTION – up 5.0 cents, or 2.2 per cent, at $2.33

Gold prices have risen for a fourth straight day as political troubles and weaker-than-expected housing data in the United States dented the US dollar.

DLX – DULUX – up 1.0 cent, or 0.2 per cent, at $6.85

Paint company Dulux has lifted first-half profit 14.2 per cent to $72.7 million.