BTW, the situation in the example is for

星空旋律 · 2007-08-21 07:04:27Z

BTW, the situation in the example is for简介

来源: 星空旋律于 2007-08-21 07:04:27 [档案] [旧帖] [给我悄悄话] 阅读数 : (140 bytes)

回答: 再谈股票option交易的风险控制：有关delta, gamma, 以及vega 由赌棒于 2007-08-20 06:47:31

1) expect the underlying grow long-term;
2) expect the underlying to be flat short-term;
3) ideally the underlying is dividend-paying.

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