Iron Ore Holdings Ltd says a renewed interest in the iron ore sector may be the reason its share price rose last week.

The junior explorer's share price climbed from 13.5 cents on January 6 to a high of 28 cents on January 8 - in the absence of any market news - which prompted a query from the Australian Securities Exchange.

"The company notes that in the last week there would appear to have been a renewed interest in numerous companies in the iron ore sector generally," Iron Ore Holdings said in a statement.

"Further, the company notes that world markets have recently been the subject of significant volatility following the onset of the global financial crisis."

Iron Ore Holdings shares remained untraded at 26 cents by 1007 AEDT.

The iron ore explorer, which has projects in the Pilbara region of Western Australia, on Monday released results of a drilling program conducted on the Weeli Wolli project.

But the company said it believed the information contained in the announcement was not the reason for the recent share price activity.