A class action lawsuit has been filed against Pump.fun, the memecoin creation platform on the Solana blockchain, accusing it of selling unregistered securities and promoting "pump-and-dump" schemes. The complaint, filed on January 30, 2025, in a federal court in New York by Diego Aguilar, alleges that all cryptocurrencies issued on Pump.fun are "unregistered securities", representing an evolution of Ponzi schemes and pump-and-dump! The platform is said to have generated nearly 500 million dollars in fees related to these activities.