How should asset prices affect monetary policy, and how do they? It is argu
ed that asset prices should not be included in the measure of inflation tar
geted by monetary policy, which should focus on the prices of goods and ser
vices for current consumption. The information yielded directly by asset pr
ices, e.g. about inflation expectations and interest rate expectations, is
examined. Finally, the question of what asset prices add to other indicator
s is considered, and it is concluded that asset prices matter for monetary
policy because they help to inform judgements about inflation prospects.