Klarna's stock opened at $52, a 30% premium on its $40 pricing, and ended at $45.82, marking a 14.6% increase. The IPO raised approximately $1.37 billion, making it the largest of the year. Klarna, founded in 2005, has expanded significantly in the US buy-now-pay-later market, partnering with major retailers like Walmart. CEO Sebastian Siemiatkowski emphasizes the company's goal to compete with credit cards, offering flexible payment plans. Klarna reported strong revenue and low delinquency rates, positioning itself as a major player in the financial market.