"Increasing the value of listed companies is essential for the expansion and revitalization of the market," Takahiro Miura, Japan Exchange Group's market innovation and research director of index business, told CNBC Monday.
It means these companies have the same level of price-to-book ratios, return on equity and earnings-per-share growth rate, he said, adding that each company has a market capitalization of at least 1 trillion yen.