The world’s most important financial market is not fit for purpose

Everyone wants to trade Treasuries. Big banks hold them for liquidity management, pension funds own them for long-term yields, hedge funds use them to bet on the economy, individuals’ savings are stored in them and central banks use them to manage foreign-exchange reserves. The market for Treasuries, most of the time, is deep and liquid. Some $640bn of government bonds change hands each day, at prices that become the benchmark risk-free rate by which all financial instruments are valued and lending rates set.