9. Given the following 7 stock prices for the past 9 years build the optimal equal-weighted two stock portfolio that minimizes the exposure to independent risk. Stock 2012 2013 2014 2015 2016 2017 2018 2019 2020 ROCK 14.47 16.58 18.60 16.34 25.02 42.00 33.25 35.02 50.58 EPAY 23.80 27.03 36.00 25.42 29.27 25.26 34.57 46.92 54.35 LD 51.04 58.93 50.46 40.53 35.59 48.05 58.34 43.11 40.56 INDT 26.93 27.55 33.94 30.56 26.02 30.18 36.66 33.35 39.57 SMG 47.61 44.78 62.08 62.52 63.93 96.29 108.82 60.54 106.51 PHG 21.30 27.06 36.57 29.17 24.77 30.08 37.88 34.76 49.39 BOH 45.43 45.02 58.93 59.51 62.90 90.35 86.43 66.55 77.09 EPAY LD -0.01556 0.016264 1 -0.00630 Covariance table: ROCK ROCK 1 EPAY LD INDT SMG PHG BOH INDT 0.00105 0.009669 0.015778 1 SMG 0.051324 -0.01419 0.027194 0.037075 1 PHG 0.009813 0.018562 0.023162 0.030206 0.054557 BOH 0.035901 -0.01475 0.018121 0.016461 0.055783 0.021311