SoftBank said steeper-than-expected losses on office share firm WeWork pushed its net loss for the latest fiscal year to around ¥900bn ($8.4bn) — $1.4bn more than it announced just two weeks ago.

The Japanese tech conglomerate, best known for its $100bn Vision Fund, is scrambling to calculate the hit to its bottom line from souring investments before it releases earnings on 18 May for the year ended 31 March. The deeper loss comes from SoftBank’s multibillion-dollar rescue of We Co., the parent of WeWork, whose value cratered last year after investors turned wary of the company’s highflying chief executive and heavy-spending business model.