أرسل هذا في رسالة قصيرة: Toward the Black–Litterman with Shariah-compliant asset pricing model: a case study on the Indonesian stock market during the COVID-19 pandemic

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