| 问题1:原价X，下降N%，到底怎么算下降后的价格 curriculum reading 50, 第二题"A stock currently trades at a price of $100. The stock price can go up 10 percent or down 15 percent. " 答案说：下降15%就是100*85%=85 而2013mock afternoon 第10题，题目说S=30，上升15%，下降20%， 答案说是25，应该是30*80%才对啊？ 问题2：curriculum reading 50,第三题B问题 "If the current put price is $14, it is overpriced（put price today12.7). In order to create a hedge portfolio, we should sell the put and short the underlying stock. The hedge ratio is" 不是应该高卖低买吗？ 应该是short the put ,buy the stock, 为什么是short the stock呢？ |
发表于 2013-8-20 11:40
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