RTE News has seen new figures which reveal the latest market share position for the supermarkets operating here.
The news figures show that Tesco had the biggest share of the Irish market in November with a figure of 26.3%, up 0.5% from the same time last year.
Dunnes Stores was at 22.6%, up 0.3%, while Supervalu increased its market share by 0.6% to 20.1%.
But Superquinn's market share in the 12 month period fell by 0.7% to 8%, while Aldi and Lidl's share of the Irish market was flat at 5.5%.
The figures also show that Spar's market share rose by 0.2% to 2%, while Centra was up a similar amount to 2.2%.
In the last month several new supermarkets opened up throughout the country, including seven new Dunnes Stores, two Tescos, one Lidl and one Aldi.