A U.S. federal court is currently reviewing the MEV (Maximal Extractable Value) practices of Pump.fun in a class-action lawsuit. The plaintiffs allege that the use of MEV tools and CFT-related transaction manipulation negatively impacted retail investors during Solana memecoin launches. The lawsuit names Solana Labs, the Solana Foundation, and Jito Labs, accusing them of infrastructure decisions that allegedly resulted in losses ranging from $4.4 billion to $5.5 billion. The court has not yet confirmed these financial figures.