标准普尔下调美国信用评级

????日期：2011年8月8日

????道琼斯指数：下跌635点，跌幅5.6%

????8月份第2周，美国股市经历了跌宕起伏的四个交易日。相信这样惊心动魄的经历，投资者一定终生难忘。前一个周五的晚上，标准普尔做出了一个史无前例的决定，将美国的信用评级从AAA调整为AA+，震惊了整个世界。周一早上美国股市开盘之前，全球市场率先跳水，投资者陷入一片恐慌。当天被认为是2011年最糟糕的交易日。标准普尔500指数跌幅达到了6.7%，而纳斯达克（Nasdaq ）跌幅也高达6.9%。

????而这一周才刚刚拉开序幕。

S&P downgrades the U.S.

????Date: August 8, 2011

????Dow: -635, down 5.6%

????Who could forget the wild, four-day ride investors took during the second week in August? On the previous Friday evening, the world was rocked by news that Standard & Poor's had made the unprecedented decision to downgrade the United States' credit rating from AAA to AA+. World markets plunged before the U.S. market opened that Monday morning, and investors were panicked. The day marked the single worst trading day of 2011. The S&P 500 dropped 6.7%, and Nasdaq fell 6.9%.

????And the week was only beginning.