同问期权价格问题

$标普500指数ETF(SPY)$目前spy指数270，同样是买6月1日的call，280的是1元，270的是5元，哪个划算？到280的话各盈利多少？

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simons的期权实验室
2018-04-20
simons的期权实验室
270价值5元 delta=50、280价值1元delta=15。270 delta power=0.10 280delta power=0.15 也就是说spy每上升1个点，270的收益率是10%，280的收益是15%。另外注意270的资金占用是280的5倍。相同头寸下280应当有更严格的止损。
- 小陈666回复simons的期权实验室:
  哦哦，那岂不没到期之前如果标普涨还赚，到期反而赔钱了？
- simons的期权实验室回复小陈666:
  不对。期权的乘数是100。280到期280亏100Z。
- 小陈666:
  那到期涨到280，我的盈利算法对么？280call岂不赔钱？
- 小陈666:
  谢谢
小陈666
2018-04-19
小陈666
是不是比如本金都是10元，买280call的话可以买10股，买270call只能买2股，如果到期涨到280，280call赔10元，但270call盈利10元即翻倍？如果涨到282的话，280call盈利10元，270call盈利14元。这样算的话岂不总是买价格低的划算？

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