https://www.reuters.com/article/us-grab-m-a-altimeter-capital-spac/grab-strikes-40-billion-deal-to-go-public-in-biggest-ever-blank-check-merger-idUSKBN2C015C >Southeast Asia's largest ride-hailing and food delivery firm Grab Holdings Inc on Tuesday confirmed its $40-billion merger with a publicly-listed shell company backed by Altimeter Capital, marking the biggest ever deal with a blank check firm.