Swedish buy now, pay later giant Klarna (KLAR) is set to begin publicly trading on Wednesday after raising $1.37 billion in its initial public offering, kicking off a strong week of New York stock debuts. Klarna priced its IPO at$40 per share, the company said Tuesday, marking an increase from its previous pricing estimate of $35-37 per share and signaling strong demand for the stock. The pricing values the company at roughly$15.1 billion based on the number of shares outstanding. The market cap is a ...