TOKYO -- The number of companies listed on the Tokyo Stock Exchange's Prime market has shrunk by 20% since the bourse was reshuffled two years ago, reflecting the higher standards expected from Japanese blue chips.
Firms shift to lower tier or go private in face of tougher standards

The Tokyo Stock Exchange's top tier has experience a shakeout over the past two years. (Photo by Yutaka Miyaguchi)
TOKYO -- The number of companies listed on the Tokyo Stock Exchange's Prime market has shrunk by 20% since the bourse was reshuffled two years ago, reflecting the higher standards expected from Japanese blue chips.