THE PERIOD OF FINANCIAL DISTRESS IN SPECULATIVE MARKETS: INTERACTING HETEROGENEOUS AGENTS AND FINANCIAL CONSTRAINTS

摘要

We investigate how stochastic asset price dynamics with herding and financial constraints explains the presence of a period of financial distress (PFD) following the peak and preceding the crash of a bubble [Charles P. Kindleberger, Manias, Panics, and Crashes: A History of Financial Crisis, 4th ed. (New York: Wiley, 2000, Appendix B)] as common among most major historical speculative bubbles. Simulations show that the PFD is due to (1) agents' wealth distribution dynamics and (2) positive and sufficiently high transaction costs generating losses for a significant mass of the agents' distribution after the peak of the bubble. The use of transaction costs to get the result is only a modeling tool. Many other mechanisms—able to generate losses for a large mass of the agents' distribution in periods in which financial constraints bind—can produce the same result. The paper also shows how the PFD is affected by a variation of the sensitivity of price to the excess demand and by the switching strategy.