An investor has learned from an investment expert that he thinks is reliable that the asset he plans to invest in will rise from 65,000 indices to 75,000 indices. According to this information, the investor has invested in the said asset. After a while, the index value of the said asset increased to 74,000 and remained at this value for a long time. Investors were not happy with the developments. In this case, what will be the investor's tendency to sell or not sell the asset in general within the framework of behavioral finance (according to the assumptions of expectation theory)? In this context, explain what error the investor will make, with the reasons.