70664089 : How can I do that at a negative cost?
70664089 heracheong OP : Xiaobai can't understand... does that mean buying low and selling high in options contracts?
70664089 heracheong OP : Understand~ I checked and understood, thank you
70664089 : How can I do that at a negative cost?
70664089 heracheong OP : Xiaobai can't understand... does that mean buying low and selling high in options contracts?
70664089 heracheong OP : Understand~ I checked and understood, thank you