Jupiter is launching its Japan Select Sicav next month for Simon Somerville.
Seeking long-term capital growth, it will also be able to invest in government bonds from across the region.
Japan Select is one of eight sub-funds of the group's Luxembourg-domiciled Jupiter Global vehicle.
Somerville also runs the Japan Income fund, which has been top-quartile over one and three years since it launched in September 2005.
Typically looking at mid and small caps, Somerville will employ a growth at a reasonable price (Garp) strategy, with between 40 and 55 stocks in the portfolio.
He says smaller companies in Japan are currently presenting more attractive valuations than their larger cap counterparts.
He adds the export sector has been seriously impacted by external factors and will continue to suffer.
"However, the domestic sector has been far more stable, and has not suffered a financial crisis as other major markets have. We have probably seen the worst of the poor economic and earnings news flow.
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