Pull 20 years of monthly stock price and trading volume data for any 20 stocks of your pick from Yahoo Finance.

Calculate the monthly returns and 12-month moving average of each stock.

) Construct an equal-weighted portfolio of the 20 stocks and plot the time series of the portfolio returns and the time series of 12-month moving average of the portfolio returns.

Drop the bottom decile of stocks with lowest trading volumes each month, and repeat the same task in question (3