Stock Price # Shares   X Y Z X Y Z…

  Stock Price # Shares   X Y Z X Y Z January 13, 2024 20 40 30 1,000 2,000 1,000* January 14, 2024 25 42 18 1,000 2,000 2,000 January 15, 2024 27 45 8 1,000** 2,000 2,000 January 16, 2024 20 40 10 3,000 2,000 2,000 ​ *2:1 Split on Stock Z after Close on January 13, 2024 **3:1 Split on Stock X after Close on January 15, 2024 The base date for index calculations is January 13, 2024   Calculate a value-weighted index for January 15 if the initial index value is 100.

Stock Rit Rmt ai Beta A 10.6% 15% 0 0.8…

Stock Rit Rmt ai Beta A 10.6% 15% 0 0.8 Z 9.8% 8.0% 0 1.1 ​ Rit = return for stock i during period t Rmt = return for the aggregate market during period t   What is the abnormal rate of return for Stock Z during period t using only the aggregate market return (ignore differential systematic risk)?