ABC-Mart (TYO:2670) booked a more than 10% jump in all-store sales in May from a year ago, according to a Tuesday filing on the Tokyo Stock Exchange.

Sales at existing stores also grew by 9.9% year on year, the filing said.

All-store sales per customer rose 4.6% for the month, while the number of customers saw an increase of 5.5%.

The company's store count stood at 1,087 at the end of May.