新人不要随便做空,甚至可能做空的权限都没有。 一般来说,有margin带level 3 option的。你有3种选择。 1. 买 put 权限最低,风险最大,利益最大,纯赌博 2. short sell stock,一般来说不是每个人都能做,个别stock会有hard to borrow fee,如果涨了超过你的资产,会收margin interest 3. short call,权限要求很大,一般新人账户做不了。 回答你的问题: 1. hard to borrow fee从settle date起算,比如你今天卖了,当天buy to cover,你 没有hit settle,这个apr是不收的。一般settle是3个business day,具体看券商通知 2. buy put就是纯赌博,对了你会赚很多,错了直接归0
AAPL is currently trading at ~145 you can safely short AAPL by doing bear spreads; they have well-defined risk-reward structure. 1. mid-term Credit call spread, e.g., Jul 21 * short 150 call (OTM) * long 160 call (OTM) You expect the short leg earns money for you, and the long leg caps the upside risk. If you want better reward-risk ratio, at the expense of smaller probability of profitability, you may try the 145-150 spread. It is advised to close your positions once your 50% max profit is achieved. This reduces your exposure to risks, especially the Gamma risk when the maturity date is approaching. OR 2. long-term Debit put spread, e.g., Jan 2019 * short 130 put * long 140 put its time decay is only -0.09 initially if you can buy this spread at $4/spread you will have max profit $600 = $(140-130-4) x100 max loss -$400 = $4 x100 at maturity and >60% probability of achieving $300 profit at some point before maturity. Close your positions on $300 profit target.
【在 E***r 的大作中提到】 : AAPL is currently trading at ~145 : you can safely short AAPL by doing bear spreads; : they have well-defined risk-reward structure. : 1. mid-term Credit call spread, e.g., Jul 21 : * short 150 call (OTM) : * long 160 call (OTM) : You expect the short leg earns money for you, : and the long leg caps the upside risk. : If you want better reward-risk ratio, : at the expense of smaller probability of profitability,