Does this include dividends in returns? Most senators are older (closer to retirement), I am assuming they invest more in dividend stocks and bonds than growth stocks.
We use adjusted close data pulled from Yahoo Finance to calculate daily returns. Adjusted close prices include adjustments for all applicable splits and dividend distributions.
adjusted close prices aren't what you want, when a dividend occurs the adjusted close price is reduced by the dividend amount. you want total returns.
You should show all a senators holdings in one view when filtered by their name.