USD divergence from bond yields, US savings, JPY curve

Accordingly, the current divergence of USD from US bond yields should not stay for long. It will be the steepening of the US yield curve reducing the relative attractiveness of taking advantage of the wide USD-JPY cross currency base. Otherwise, real yield differentials should be watched closely. It is the 10-year real yield differential and not the front end that matters here. The 10-year real yield differential leads USDJPY while 2-year real yield differentials and USDJPY follow a random pattern. With DM reflation gaining momentum and the BoJ keeping the JGB curve controlled, the real yield differential should soon pointhigher again, taking USDJPY with it. Moreover, the 40-year JGB has reached 1%, which may be too high for the yield curvecontrolling BoJ. Rinban operations emphasising long-end JGB purchases may be the next event to push USDJPY up.

Since the summer, the US savings ratio has declined from 6.2% to 5.5%,and with the government considering tax cuts and public sector spending programmes, US aggregate savings are set to decline. This is important should the economy enter self-sustaining growth with private investment picking up. Private investment increases capital demand which, in the context of lower aggregate US savings, must lead to a higher yield unless a higher USD and related capital inflows do not moderate this effect. We emphasise that the US has the choice between higher bond yields and a higher USD. The vacuum of US economic data this week gets filled today with a flurry of reports on jobless claims,new home sales, the trade balance, wholesale inventories, leading indicators and the services sector. Another set of better US data releases should work via higher yields into support for USD.