Alternating-move Hotelling with Demand Shocks

In this paper an infinite-horizon alternating-move Hotelling model in which consumers are uniformly distributed over the market is considered. In a Markov perfect equilibrium, a seller’s move in any period depends on the price the other seller is committed to. The analytic solution is given and the unique linear Markov perfect equilibrium is computed for different values of the discount factor. The base model is then extended by the intro-duction of exogenous demand shocks which makes finding an analytical solution using the conventional analysis impossible. For this extended model the margin in which long-run prices fluctuate is determined for different values of the shock probability. It is found that the prices set in the high demand state are always lower than in the low demand state.