Top 20 US stock trading volume: Apple fell 3.6%, hitting a new low since November, while Barclays expects it to fall 17%. Apple, ranked third, closed down 3.58%, with its stock price hitting a new low since November 13th, trading at $14.831 billion. Barclays has downgraded its stock rating to "underweight" with a target price of $160, stating that the stock will fall 17% this year due to sluggish iPhone sales.