Selling calls gives investors immediate cash as well as the potential for further gains in return for capping those gains at the strike price.
出售看涨期权令投资者获得现金，同时还有可能在将来获利，代价是期权执行价为股票的收益封了顶。
2
Net result: Your 'escape fund, ' as Ms. St. Germain calls it, can be anywhere from zero to a large pile of cash to supplement your income indefinitely.
最终结果是：杰曼所说的“逃生”基金可能从零到一大笔现金才能补充你不确定的收入。
3
That sizable move over a short period of time likely triggered billions of dollars worth of cashcalls between dealers and other firms.