PayPay Corp., a Japanese leader in digital payments, is preparing to enter the world's largest stock market, fintechweekly.com reported, noting that it has filed documents with U.S. regulators for an initial public offering (IPO) on Nasdaq, marking a major step in its effort to expand beyond Japan and solidify its role in global digital payments. The operator of Japan's most widely used QR code payment app filed a registration statement with the U.S. Securities and Exchange Commission (SEC) on