$3)$ What are the $1-$year gain or loss $(\%)$ of the single stock, your diversified portfolio, and the S&P $500$ index $($as of the date on which you are doing this assignment$)?$

$1$Y Gain$/$Loss $(\%)$

Single Stock

Diversified Portfolio

S&P $500$ IndexHOME $>$ AAPL $*NASDAQ$

Apple Inc

$$176\mathrm{.}55+1\mathrm{.}51$ Today

$4)$ Reflect on the differences in risk and return among the single stock, the diversified portfolio and the S&P $500$ index investment. What is the impact of diversification on the portfolio risk?