One advisor charges commission on any trades of $$20$ each way while the other charges a flat $2\%$ fee per year. The investor believes he needs to buy and sell $30$ stocks in any given year in order to be fully diversified. How much money does the investor need in order to be indifferent between using the two advisors? Given the investor can buy an exchange$-$traded portfolio such as a Diamond $($DIA$),$ Cube $($QQQ$),$ or Spider $($SPY$)$ in order to be well diversified with one trade which advisor does that favor? Explain why. Which one of those three portfolios had the best return since the beginning of the year? $($use Yahoo Finance and Feb $9$ as the ending date$)$