The S&P 500 closed up every trading day this week, which also means we have started 2010 up five days in a row. Since the S&P 500 started back in 1927, there have only been three other years where the index closed up five days in a row to start the year -- 1967, 1987, and 2006. In 1967 and 2006, the winning streak ended at 5 days, while in 1987 it ended after 7 days. As shown below, the rest of January following the five-day winning streak was positive twice and negative once, with an average return of 3.45%. The rest of the year was positive twice and negative once as well, with an average return of 7.49%. At any rate, let's hope 2010 turns out to be more like 1967 and 2006 and not 1987.
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