Shares in Mitsubishi Motors Corporation (MMC) soared more than 20% on Thursday after the Nikkei business daily reported PSA Peugeot Citroen was in talks to spend up to JPY300bn (US$3.4bn) to acquire a 30-50% stake in the Japanese automaker. PSA itself would confirm only it had "started discussions with Mitsubishi Motors Company (sic) concerning the possibility of extending their relationship".