Buy now, pay later firms like Klarna and Block's Afterpay could be about to face tougher rules in the U.K.Klarna, which is known for its popular buy now, pay later business, announced Wednesday that it's confidentially filed IPO documents with the SEC. The company said the offering would follow the SEC's review process and is subject to market conditions. Analysts recently valued Klarna, which was founded in 2005, in the $15 billion range. Klarna's decision to go pursue a listing in the U.S. represents a major blow to European stock exchanges, which have been trying to encourage local tech companies to list at home. "European IPO markets have seen some recovery as of Q3 this year," she added.

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Persons: Block's, it's confidentially, Klarna, Sebastian Siemiatkowski, CNBC's, Siemiatkowski, Siemiatkowski hadn't, Navina Rajan, We've, Rajan Organizations: SEC, SoftBank's Vision, Sequoia Capital, CNBC, Apple, Meta, London Stock Exchange Locations: London, Europe, U.S