The listing would be a significant boost to the subdued IPO market and could value Klarna at as much as $15bn. The listing will be closely watched by fintech investors hoping that the sector can emerge from a funding drought driven by higher interest rates.

"The latest spike in volatility has dimmed the IPO prospects for a number of companies, but that has not completely shut down the market for new listings," said Matt Kennedy, senior strategist at Renaissance Capital, a provider of IPO-focused research and ETFs.