期权第一课：买call和Put
Call就是看多期权，Put为看跌期权，新手散户一般都是期权买方，期权卖方多为聪明钱。 不管买Call还是Put你都是买方, 裸买期权就是你不持有标的（如BTC)本身，只赚预期的收益，需要支付的是权益金。
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