San Francisco Fed researchers say stablecoin issuers added about $200 billion in Treasuries since 2021, covering 40 percent of China's pullback, and could reach $400 billion by 2030.

San Francisco Fed researchers say stablecoin issuers added about $200 billion in Treasuries since 2021, covering 40 percent of China's pullback, and could reach $400 billion by 2030.