SuperValu is Ireland’s leading grocery retailer by market share. The Irish group took the top spot from long-time leaders Tesco in the Kantar Worldpanel’s market analysis for the first quarter of 2015. The volume of consumer spend on groceries increased in SuperValu stores by 3%. In contrast, Tesco experienced a fall of 3.4% in spend in the same period. This led to a 1.2% fall in market share for Tesco, allowing SuperValu into the top spot.