We assume that the instantaneous riskless rate reverts toward a central tendency which, in turn, is changing stochastically over time. As a result, current short-term rates are not sufficient to predict future short-term rate movements, as it would be the case if the central tendency were...

A price barrier is a price level at which a large number of investors either buy or sell securities. We analyze the dynamics of asset prices in an economy in which price barriers exist. Our analysis suggests that asset prices and volatility can exhibit jumps when the price barrier is reached....