The following table shows the returns from three securities (A, B, and C) over a 10-year period.

	A	B	C
2009	0.223	0.273	0.121
2010	0.154	-0.17	0.312
2011	0.094	-0.33	0.06
2012	0.034	0.102	-0.344
2013	0.215	-0.129	0.313
2014	0.027	0.207	0.403
2015	0.225	0.183	-0.193
2016	-0.193	0.117	0.412
2017	0.163	0.264	0.394
2018	0.25	0.102	0.056

• Assuming an equal portfolio split across the three portfolios (i.e. 1/3 each), calculate the expected return of the equal split portfolio?
• Compute the excess return matrix from years 2009 to 2018.
• Compute the variance-covariance matrix for the three securities.
• What is the variance of the equal split portfolio?
• Compute the minimum variance portfolio split. What is the proportion of the portfolio allocated to A? What is the proportion of the portfolio allocated to B? What is the proportion of the portfolio allocated to C?