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Investors invest in variety of markets with different time viewpoints. They aim to find the best investment opportunities among the various markets. This study surveys about various available markets in Iran. Then, the average of returns, performances and finally correlations between these markets will be studied in the short-term (three months), medium-term (one year) and long-term (five years) periods. The populations of present study are securities, land and housing, gold coins, currency (US dollar) and bonds markets. The results of this study indicate that there is a little difference between the average returns of different markets in the short and medium terms period and bonds have better performance during short and medium terms period while they have very low risk. But in long-term period land and housing are the best among markets, either in average of returns or performance. The lowest average of return and the worst performance in all terms belonged to the US dollar

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In this paper, we studied the effect of institutional quality and natural resource rents on the export of developing countries by using a panel data model for 34 countries over the period of 1996 to 2013. The results show that there is a direct relationship between institutional quality improvement and export growth in these countries. There is also a positive relationship between natural resource rents and export growth. It expressed the importance of non-price factors in explaining the behavior of exports from developing countries, so these components should be considered in an economic plan and policy objectives