This article highlights the impact of short selling restrictions and e
arly unwinding opportunities on the relation between futures and spot
prices. Within a multiperiod equilibrium model, the influence of optim
al arbitrage trading on the mispricing is analyzed. Results concerning
trade volume and level, mean reversion, and path dependence of the mi
spricing are provided. The empirical evidence suggests that short sell
ing restrictions and early unwinding opportunities are influential fac
tors for the mispricing behavior. They help explain empirical findings
reported in the literature, (C) 1998 John Wiley & Sons, Inc.