Fast Company Innovation Festival Ticket Giveaway—Enter now! LOGIN SUBSCRIBE advertisement BYÂ Michael Grothaus Listen to this ArticleMore info 0:00 / 0:00 Today, one of the most closely watched fintech initial public offerings of the year takes place. Shares of the buy now, pay later (BNPL) juggernaut Klarna Group make their stock market debut. Here's everything you need to know about Klarna's IPO. What is Klarna? Klarna Group is a Swedish fintech company founded in 2005. It's headquartered in Stockholm. Kl ...