發送短信 : Portfolio hedging and basis risks

   _____     ___     _____     _    _     _____   
  / ___//   / _ \\  |  __ \\  | || | ||  / ____|| 
  \___ \\  / //\ \\ | |  \ || | || | || / //---`' 
  /    // |  ___  ||| |__/ || | \\_/ || \ \\___   
 /____//  |_||  |_|||_____//   \____//   \_____|| 
`-----`   `-`   `-`  -----`     `---`     `----`