Supermarket chain Aldi recorded sales growth of almost 30% in the last year bringing its share of the market to 5.9%, up from 4.6% in the same period last year.
That's according to the latest supermarket share figures from Kantar Worldpanel in Ireland.
It published figures today covering the twelve weeks ending February 17th.
Dunnes is the only one of the big three supermarket chains to increase its share of the grocery market, bringing it to 24%.
That compares to 23.3% at the same time last year.
Tesco retains its position as market leader with 27.7% of the market, down slightly from 28.1% at the same time last year.
The latest figures also reveal the initial impact of the horsemeat scandal on consumer shopping habits.
The latest supermarket share figures from Kantar Worldpanel in Ireland, published today for the 12 weeks ending 17 February, reveal the initial impact of January's horsemeat scandal on consumer shopping habits.
"The impact of the horsemeat issue has so far only affected what consumers put in their baskets rather than where they do their shopping. For the four weeks ending 17 February frozen burger sales were down by 42% as shoppers chose to buy alternative meals," David Berry, commercial director at Kantar Worldpanel said.