Traders spent much of December speculating whether the typical year-end "Christmas rally" would materialize. The S&P 500 rose 0.8% on Thursday, ending a four-day losing streak after declining all month. Historically, the stock market may continue its upward trend: data compiled by Citadel Securities shows that since 1928, the S&P 500 has risen 75% of the time in the last two weeks of December, with an average gain of 1.3%. A Goldman Sachs trading team, including Gail Hafif, stated: "Unless there is a major shock, it will be difficult to resist this upcoming seasonally favorable period and more favorable positioning." "While we don't necessarily expect a significant rally, we do believe there is room for further gains between now and the end of the year." (Jinshi)