Nikkei newspaper estimated the 2015 market share of supermarkets in Japan. According to it, Aeon was the biggest chain followed by Ito-yokado, Uny, and Life. The industry-wide total sales of supermarkets were 19 trillion yen. The sales increased by 4.1% in comparison to 2014.
Figure: Supermarket Market Share in Japan, 2015
| Store | Market share (%) |
| Aeon | 12.0 |
| Ito-yokado | 7.1 |
| Uny | 4.2 |
| Life | 3.5 |
| Izumi | 3.4 |
| Others | 69.8 |
Source is Nikkei Sangyo Shimbun newspaper, the article on 2016 July 25th.
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