Average cost price Average cost price = ( 3000*1 + 4000*1 ) / 2 = 3500 PnL = (4500 - 3500) * 2 = 2000 PnL Ratio = (4500 - 3500)/3500 * 100% = 28.6% Cumulative Cost Price Cumulative Cost Price = ( 3000*2 + 4000*1 - 3500*1 ) / 2 = 3250 PnL = 2*4500 - (2*3000+1*4000) + 1*3500 = 2500 PnL Ratio = 2500 / (2*3000+1*4000 - 1*3500 ) * 100% = 38.5% 2.3 Important Notes The spot cost price data range is effective from November 6, 2020, and the following scenarios will be included in the calculation: Spot trading