Is this what you want to get the Profit/Loss figures?

=IF(AND(I2<>I3,SUMIFS($H$2:$H$24,$I$2:$I$24,I2,$F$2:$F$24,F2,$G$2:$G$24,"SELL")-SUMIFS($H$2:$H$24,$I$2:$I$24,I2,$F$2:$F$24,F2,$G$2:$G$24,"Buy")=0),
SUMIFS($W$2:$W$24,$I$2:$I$24,I2,$F$2:$F$24,F2,$G$2:$G$24,"SELL")-SUMIFS($W$2:$W$24,$I$2:$I$24,I2,$F$2:$F$24,F2,$G$2:$G$24,"BUY"),"")