Tests of Multiple Explosive Bubbles Behavior in Tehran Stock Exchange and Real State Market in Iran

Bubbles in asset markets result in diversion of savings allocations. For this reason, in macro level, the diversion of the savings disrupts investment efficiency and whole economy. Many studies in the field of behavioral finance have been undertaken to investigate this phenomenon. Recent research has shown that traditional models of unit root in the detection of explosive behaviors, especially at long ranges, are weak. In this paper, the generalized models, right-tail Dickey Fuller (RADF), and more powerful models of generalized Dickey Fuller (SUP ADF and GSADF) are used. These models, in addition to their stronger identification of explosive behaviors at long intervals, can also specify the time period of the bubbles. In this paper, the time period from 1980 to 2003 for the stock market and real state was tested. The results of this research, which is based on the advanced tests, show that the stock market and the reals state market experienced explosive bubbles behaviors in the period examined; it was 24 periods for the stock market and 12 periods for the housing market.