价格错误的指数期权投资组合
MISPRICED INDEX OPTION PORTFOLIOS
作者:
乔治·康斯坦丁尼德斯(George M. Constantinides)
米歇尔·切尔旺科(Michal Czerwonko)
Stylianos Perrakis
The optimal portfolio of a utility-maximizing investor trading in the S&P 500 index and cash,subject to proportional transaction costs, becomes stochastically dominated when overlaid with azero-net-cost portfolio of S&P 500 options bought at their ask and written at their bid price inmost months over 1990-2013. Dominance is prevalent when the ATM-IV is high, right skew islow, and option maturity is short. The portfolios include mostly calls and positions areoverwhelmingly short. Similar results obtain with options on the CAC and DAX indices. Theresults are explained neither by priced factors nor a non-monotonic stochastic discount factor.
在公用事业最大化的标准普尔500指数和现金交易中,根据交易成本成比例的最佳投资组合,在以零净成本购买的标准普尔500期权投资组合覆盖后,会随机占据主导地位。 1990-2013年大部分月份的价格。当ATM-IV高,右偏度低且期权到期日短时,占主导地位。这些投资组合主要包括看涨期权,而头寸绝大多数都是空头。使用CAC和DAX索引的选项可获得类似的结果。结果既不能用价格因素来解释,也不能用非单调随机折扣因素来解释。


雷达卡


京公网安备 11010802022788号







