Checkout.com has raised a $150mn series B round which triples their valuation to $5.5bn; the round was led by Coatue, along with participation from existing investors Insight Partners, DST Global, Blossom Capital, and Singapore’s Sovereign Wealth Fund, GIC; the company said transaction volume was up 250 percent since May 2019; Guillaume Pousaz, CEO and Founder of Checkout.com, said to AltFi, “At Checkout.com, we’ve built a technical architecture that enables pioneers to reinvent industries and redefine their relationship with consumers. Now more than ever, we are confident of our mission to build the connected payments that businesses deserve.”; Checkout.com has added more than 500 partners in the last 12 months including Revolut, Robinhood and Klarna. AltFi.