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  ______     ___      _  __     ___     _____    
 /_____//   / _ \\   | |/ //   / _ \\  |  __ \\  
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 /_//     `-`   `-`  `-` --`   `---`    -----`   
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Text this: Application of the Black-Litterman model (BL) with optimization on the Philippine Stock Exchange index (PSEi) from 2013 to 2019