An option porfolio exhibits high unfavorable sensitivity to increases in implied volatility and while experiencing significant daily losses with the passage of time Which strategy would the trader most likely employ to hedge the portfolio?
a. Sell short-dated options and buy long-dated options.
b. Buy short-dated options and sell long-dated options.
c. Sell short-dated options and sell long-dated options.
d. Buy short-dated options and buy long-dated options.
求高人指点。
"high unfavorable sensitivity to increases in implied volatility "说明隐含波动率上升会导致原portfolio损失,而买入长期的期权可以从隐含波动率的上升中获益,从而对冲掉vega的风险。
"significant daily losses with the passage of time"说明时间的逝去会导致原portfolio损失,而卖空短期的期权可以从时间的流逝中获益,从而对冲掉theta的风险。
当然,买入长期的期权会加重theta风险,卖空短期的期权会加重vega风险。但是,短期期权的vega比长期的小,theta比长期的大。所以,双管齐下可以达到vega-neutral和theta-neutral。