Japan's SoftBank Group has provided nearly half the cash for the new $400 million fund by Abu Dhabi's state-owned Mubadala Investment Co that aims to back European start-ups, the Financial Times reported on Monday. Mubadala, which is a big investor in SoftBank's Vision Fund, will use the fund to invest between $5 million and $30 million in European start-ups, FT reported, citing people with direct knowledge of the matter. A company executive said last week Mubadala Ventures was planning to launch a technology-focused, $400 million European fund this year.