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老师,您好。如图,问题(1)课上就long/short portfolio construction提到的net exposure, 这里说是用long比例的绝对值减去short比例的绝对值,皆因老师以130/30举例说这样子的net exposure是100% = 130% - |-30%| = 100%,是这样理解吗?问题(2),就 gross exposure,课上老师依然以130/30举例说此时的gross exposure为130% + 30% = 160%,但是我个人理解是因为30%是short的比例,因此这里的gross exposure应该是130% + (-30%)= 100%,是这样理解吗?同理,该科目LM3课后题Q14就有说到,"A long-short portfolio allows for a gross exposure of 100%." ,这个说法是正确的,更印证同样以130/30的gross exposure应该是100%。望老师帮忙梳理并解答一下,谢谢。
Q3: "If the corporate bond yields rise relative to Treasury bond yields (ie, the spread widens), the corporate liabilities will increase in value at a different rate than the government bonds or the futures contracts used to hedge them." -- Corporate bond yields rise, corporate liabilities value应该下降呀, 为何答案解析是上升?
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