" investors are best served if they wake up in the morning and completely forget when they bought a stock and what they paid for it , " insists foster friess , manager of the brandywine fund 白兰地酒基金经理福斯特?福赖斯坚持认为: “投资者要是一觉醒来,完全忘了他们什么时候花了多少钱买了某支股票,那他们就会得到最好的回报。