Surging deposits and declining lending are driving banks to dramatically increase their holdings of U.S. Treasurys, offering significant support to the bond market at a time of massive government borrowing.
Holdings at U.S. commercial banks of Treasury and agency securities other than mortgage bonds have grown by more than $250 billion since the end of February as their total deposits have jumped by more than $2 trillion, according to Federal Reserve data. Commercial and industrial loans initially spiked as companies drew…

