Online fast-fashion retailer Shein's profit dropped by more than a third last year, adding to its challenges ahead of a planned listing on the London Stock Exchange, the Financial Times reported on Sunday.

Fast-fashion retailer Shein’s profit slumped by almost 40% last year, putting further pressure on a potential initial public offering in the UK, the Financial Times reported, citing people it didn’t identify.

Shein and rival Temu together probably accounted for more than 30% of all packages shipped to the U.S. each day under the de minimis provision, the U.S. congressional committee on China said in a 2023 report. The measure exempted shipments of less than $800 from import duties.