Japan’s equity markets are on a tear. The Nikkei shot up 8% in just the last five days and is about to hit the 15,000 points mark.

While some experts say there’s still time before it loses steam, the trend has started to make investors wonder how long the rally can last, reports FT.com.

The recent market gains reflect a renewed sense of confidence among investors who “had become net buyers of foreign bonds for the first time since the BoJ announced its bold plan to double the size of the monetary base by the end of next year.”

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