Lume is a Solana-based trading app for tokenized U.S. equities and binary prediction markets. Stock trading uses xStocks, SPL tokens that track U.S. stocks and ETFs and are backed 1:1 by underlying equities held in regulated custody. The app supports fractional positions from $1 and notes xStocks do not confer shareholder rights. Users onboard through Privy email or social login that auto-creates a Solana wallet and fund with SOL or USDC.