Veteran fears ‘beginning of the end’ for Japan as bond market buckles

Yields on 10-year Japanese bonds (JGBs) have doubled in a month and spiked dramatically to 1pc on Thursday, triggering a 7.3pc crash in the Nikkei stock index. It was the biggest one-day fall since the tsunami two years ago, comparable with wild moves seen at the height of the Asian crisis in 1998.

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Richard Koo from Nomura, an expert on Japan’s Lost Decade, said the sell-off in recent days has shown that the BoJ may not be able to hold down yields “no matter how many bonds it buys”. This could lead to a “loss of faith in the Japanese government” and the “beginning of the end” for its economy, if handled badly.