Axial Retailing's (TYO:8255) all-store sales in August rose 3.1% year over year, while existing-store sales grew 2.3%, according to a Tokyo bourse filing on Monday.
Average spending per customer climbed 2.5% each across all stores and existing stores.
Customer traffic ticked up 0.5% overall and fell 0.2% at existing stores.
Shares of the supermarket operator fell nearly 2% in recent trade.