 SoftBank Group Corp OTC: SFTBF OTC: SFTBY-backed Singapores ride-hailing and financial services start-up Grab is set for a U.S. public listing through Altimeter Capitals SPAC special purpose acquisition company Altimeter Growth Corp NASDAQ: AGC, in a deal valued at 35 billion by as early as this week, the Financial Times reports. Altimeter has procured 850 million for two SPACs. 