This is just my observition. Treat it as alert and don't be caught unguard. Example: "911" in 2002 had a very volatile up wave. But following day back to down trend.
二. First week afer labor day.
通常在这一周如果形成"double bottom" or "double top" pattern, 将会标志旧趋势的结束和新趋势的开始. ( This is one of the reason that I think the down trend will start from next week.) 1984 和1996 年都有类似的情况发生. 这也和周期理论的结果相符. 一般down trend 比较多.
三. Second week after labor day
The weekly trend will represent the trend to end of October. This may be not necessary true but be causious!
四. September is the worst trading month in the whole year.
The table below lists (in descending order) the average monthly returns of the S&P 500 Index (SPX - 1,313.32 9/5/06) from 1950 to 2003:
Month Average Return January 1.6% Novmber 1.24% December 1.17% April 0.96% March 0.85% Feburary 0.81% May 0.63% July 0.46% August 0.39% June 0.32% October 0.10% September -0.28%