Citigroup forecasts that the total circulating supply of stablecoins could expand to between $1.6 trillion and $3.7 trillion by 2030, depending on various scenarios. The bank anticipates that approximately 90% of this supply will remain denominated in U.S. dollars, even as other countries advance their own central bank digital currencies (CBDCs). Despite the significant growth potential, Citi analysts note that the stablecoin market is still in its nascent stages, with uncertain timelines and adoption rates.