I have XRP since I bought it at 0.90 in each purchase, taking the average including the purchases I made at 0.90 cents. Although the asset is now worth more than 3 USDT.

Can someone explain to me, if I bought in spot $BTC at 114,300 and in my assets it shows an average of 114,864.9 and I had 0 BTC, shouldn't it show 114,300? If I only have that purchase?