A stock is not acting right. What does that mean? A stock not acting right is when a stock's price action is not going according to your expectations and your 'instincts' tell you that your trade is incorrect. It is at this point where fear and hope enters your psyche to expect the trade to go right and you hold onto a losing trade. But don't forget your instinct just told you that your trade is incorrect. Who do you believe? Instinct or fear/hope? Always believe your instincts.