It’s been a long road for the 20-year-old fintech Klarna to make it to an IPO. But on Wednesday, the company successfully landed on the New York Stock Exchange, having raised $1.4 billion, largely for its existing investors, rather than itself. The fintech giant sold shares at$40, above its announced range of $35 to$37, and came out of the gate with a $15 billion valuation. Shares popped, opening at$52, though quickly settling down to around $46 mid-day. Of the 34.3 million shares Klarna sold, only 5 mi ...