Since 2008, the central banks of advanced countries have borrowed trillions of dollars from their commercial banks in the form of interest-paying reserves and invested the proceeds in portfolios of risky assets. We investigate how this new style of central banking affects central banks'...

As part of its implementation of monetary policy, the Federal Reserve (Fed) holds Treasury securities and agency mortgage-backed securities (MBS) in the System Open Market Account (SOMA). The market value of these securities and the Fed's income fluctuate with changes in interest rates. As such,...