The market had a huge up day on Monday. There may be more upside to the market as the week progresses but not without strong opposition from the bears. Here is a chart of the SP500 showing the levels of resistance the market will need to break in order to continue it's climb. Today's close was also at the 61.8% retracement from the most recent peak and 38.2% retracement from the peak in August 2008.