Stocks of interest at the close of trade on the ASX on Thursday, January 24.

NAB – NATIONAL BANK AUSTRALIA – up seven cents, or 0.29 per cent to $24.58

After months of resistance NAB has finally joined its big four rivals in hiking variable mortgage rates for both owner-occupiers and investors, citing funding costs and shareholders.

OZ MINERALS – up 31 cents, or 3.38 per cent to $9.47

Miner Oz Minerals Ltd says fourth-quarter copper production has fallen about 1.4 per cent on weaker output from its Prominent Hill project, and that production in 2019 was expected to fall further.

STO – SANTOS – up 23 cents, or 3.86 per cent to $6.19

The country’s number two independent gas producer Santos expects 2019 production to rise by up to 32 per cent, boosted by the acquisition of Quadrant assets.

WHC – WHITEHAVEN COAL – up 20 cents, or 4.35 per cent to $4.80

The local energy sector was by far the best performer at the close on Thursday.

NST – NORTHERN STAR – down 47 cents, or 5.41 per cent to $8.21

SBM – ST BARBARA – down 22 cents, or 4.69 per cent to $4.47

Gold miners Northern Star and St Barbara both received broker downgrades after weak quarterly numbers.