After a third consecutive week of upward trend, the S&P 500 index has surged by 7.6% this month. According to research by Bespoke Group, the overall trend of US stocks this year has closely followed the seasonal pattern of previous years - although the stock index was under pressure in the autumn, it hit a bottom in late October and showed a significant rise, similar to a common historical phenomenon in the past. This inevitably leads people to have more expectations for the traditional upward trend at the end of the year.