How come when i go long on sep17 feeder cattle futures for example my position becomes worth less as the price increases passed what i bought it for ? and worth more when it goes bellow what i bought it for ? isnt that counter intuitive ? i thought it should increase in value as price goes up? also when i short light sweet crude /qm for example... my position value increases as the price goes up ? is there something wrong here ? im paper trading on thinkorswim.