The Investigating of Exchange Rate Volatility Impact on Stock Market Price Efficiency and Optimization of Investment Portfolio

Current research; meanwhile investigation of relationship between market currency fluctuations and chemical product industries stock returns, study optimize investment portfolio consisting of selected industries. So; multivariate heterogeneous variance models (CDCC), were used in Variance-Covariance with variable-time condition for estimation daily data output and also stock-variable index was used for basic metals and chemical product industries share index daily data output estimation during 1387 Azar month to 1394 shahrivar month. Also, in order to study impulse response functions, selected shares to market currency rate shocks; Var model was applied. Then, investment portfolio optimization was done with minimization portfolio risk according to Markowitz portfolio theory. Optimal stock weights were specified during time. Results show significant relationship between exchange rate fluctuations and studied industries stock returns. Also stocks immediate and weak reactions to created shocks in exchange rate are strengths for most diverse and most optimal portfolio selection. In optimization results; more weight of investment portfolio during time relates to stocks which themselves output fluctuations have been declining over time.