Mr. Bora who is very optimistic about the future earnings of Halkbank ( a bank stock trading in Borsa Istanbul) bought 1000 shares of Halkbank at the price of 5.2 TL per share. He then decided to borrow a loan from his brokerage house in order to buy additional shares of Halkbank What is the maximum amount of the loan he can get? Supposing that he gets that maximum amount of loan; what will be his initial margin ratio? Suppose the price of Halkbank is up to 7.4 TL /share after four months. What will be Mr. Boras net profit (in all stocks he bought) given that the annual interest rate on such loans is 15%? Suppose that the price of Halkbank is down to 2.9 TL after one month. What will be the margin ratio on that day? If the maintenance ratio is 0.35; will he receive a margin call? If so; how much addtional money he must deposit?