Provide one reason for using the banks investment portfolio to speculate on interest rate movements. Provide one

Question:

Provide one reason for using the bank’s investment to speculate on interest rate movements. Provide one reason against such a strategy. What do you believe about efficient markets, and how does this influence your opinion of speculating? Can investors accurately forecast the direction of future interest rate movements?
Portfolio
A portfolio is a grouping of financial assets such as stocks, bonds, commodities, currencies and cash equivalents, as well as their fund counterparts, including mutual, exchange-traded and closed funds. A portfolio can also consist of non-publicly...