 Grab Holdings Inc, the SoftBank Group Corp OTC: SFTBF backed Singapore-headquartered ride-hailing company serving eight nations across Southeast Asia, has announced plans to go public in a transaction that will become the largest SPAC merger on record. What Happened: Grab is merging with Altimeter Growth Corp. NASDAQ: AGC in a deal that puts Grab at an initial pro-forma equity value of approximately 39.6 billion at a PIPE size of more than 4 billion. 