Consider the following table of annual rates of return, in percentage, for four common risky assets over the time period 2010 to 2019 Berkshire Hathaway (ticker: BRK/A) S&P 500 Index (ticker: SPX) NASDAQ 100 Index (ticker: NDX) Russell 2000 Index (ticker: RUT) YEAR BRK/A SPX NDX RUT 2010 21.4 15.1 19.22 26.85 2011 -4.7 2.1 2.7 -4.18 2012 16.8 16 16.82 16.35 2013 32.7 32.4 34.99 38.82 2014 27 13.7 17.94 4.89 2015 -12.5 1.4 8.43 -4.41 2016 23.4 12 5.89 21.31 2017 21.9 21.8 31.52 14.65 2018 2.8 -4.4 -1.04 -11.01 2019 11 31.5 37.96 25.52 Now assume there is a risk-free asset available and the annual risk-free rate is 2%. Using mean- variance portfolio theory, determine the 4 portfolio weightings and the portfolio variance for the unique fund F defined by the tangent portfolio and the one-fund theorem. Note that the portfolio weights sum to 1 and short selling (negative weights) are permissible. Please enter your solutions in the answer boxes for Questions 6 to 10. What is the portfolio weight for BRK/A in the unique fund F? What is the portfolio weight for SPX in the unique fund F? What is the portfolio weight for NDX in the unique fund F? What is the portfolio weight for RUT in the unique fund F? What is the portfolio variance of the unique fund F? Consider the following table of annual rates of return, in percentage, for four common risky assets over the time period 2010 to 2019 Berkshire Hathaway (ticker: BRK/A) S&P 500 Index (ticker: SPX) NASDAQ 100 Index (ticker: NDX) Russell 2000 Index (ticker: RUT) YEAR BRK/A SPX NDX RUT 2010 21.4 15.1 19.22 26.85 2011 -4.7 2.1 2.7 -4.18 2012 16.8 16 16.82 16.35 2013 32.7 32.4 34.99 38.82 2014 27 13.7 17.94 4.89 2015 -12.5 1.4 8.43 -4.41 2016 23.4 12 5.89 21.31 2017 21.9 21.8 31.52 14.65 2018 2.8 -4.4 -1.04 -11.01 2019 11 31.5 37.96 25.52 Now assume there is a risk-free asset available and the annual risk-free rate is 2%. Using mean- variance portfolio theory, determine the 4 portfolio weightings and the portfolio variance for the unique fund F defined by the tangent portfolio and the one-fund theorem. Note that the portfolio weights sum to 1 and short selling (negative weights) are permissible. Please enter your solutions in the answer boxes for Questions 6 to 10. What is the portfolio weight for BRK/A in the unique fund F? What is the portfolio weight for SPX in the unique fund F? What is the portfolio weight for NDX in the unique fund F? What is the portfolio weight for RUT in the unique fund F? What is the portfolio variance of the unique fund F
