A call option - you have a right to buy (long) a stock with a certain price at a certain time in the future

A Put option - you have a right to sell (short) a stock with a certain price at a certain time in the future.

you could long a call/put, and short a call/put to protect your assets.

多谢！

但如何理解我那两句呢？是一本书上描述的。

[此贴子已经被作者于2005-9-30 8:59:50编辑过]

一个看涨期权相当于一个对(价格下跌造成的)损失进行了保险的多头的远期,(可以享受价格上涨的收益)

一个看跌期权相当于一个对(价格上涨造成的)损失进行了保险的空头的远期,(可以享受价格下跌带来的收益)

多谢兄弟。