Wu learned that according to DeFiLlama data, the dark pool HumidiFi has become Solana's largest DEX, with a 24-hour trading volume of $1.1 billion, a 7-day trading volume of $9.698 billion, and a 30-day trading volume of $34 billion. These figures surpass Meteora, Raydium, and Pump, making them the top Solana DEX by trading volume. Dark pools lack a front-end and provide quotes privately, with trades typically executed by aggregators.