Shares in RCR Tomlinson were firmer after the engineering firm forecast a 70 per cent first-half profit upgrade.
The company said it expected to post net profit after tax of $15-$16 million, up from $8.8 million in the previous corresponding period.
RCR also predicted EBIT of $18-$19 million, up from $13.7 million.
The company said the improved results were underpinned by solid revenues and improved margins.
"RCR's performance for the six months to December 2012 has been driven by a well balanced order book, which included continued growth in both recurring and major projects revenues," the company said in a statement.
Managing director Paul Dalgleish said revenues for the first half of $388 million had been particularly strong, up 16 per cent on the previous corresponding period.
RCR said it expected to report its final, audited first half results on Thursday, February 21.
Shares in the company were up four cents, or 1.83 per cent, to $2.23 at 8.15am.