Warren Buffett Stocks Performance Guide: BYD Co. Ltd (BYDDF)

The chart displays the percent returns for a 10-year period for a given stock highlighting the profitable investment dates in green and the unprofitable ones in red. If a stpck has fewer than 10 years of prices, all dates are used. The percent return for each purchase date is computed using the following formula:
;
Percent return = ((Today's closing price - Purchase date closing price) / Purchase date closing price) * 100

The calculator assumes that the stock has been held since the purchase date so the percent return is valued using of the most current closing price.

Each vertical line represents the percent gain or loss for a purchase date to the end date of the analysis. Large gains correspond to purchase dates with relatively low prices. Conversely, small postive gains or negative returns correspond to relatively high purchase prices.

If prices are on the upside for the period, gains for the earliest purchase dates tend to be higher than later purchase dates. However, if prices are on the downside for the period, gains for the earliest purchase dates tend to be lower than later purchase dates. Computationa are based on monthly closes adjusted for dividend reinvestment from Alpha Vantage