Despite the fact that US stock markets enjoyed the best September in decades, ending the month on an upbeat note, analysts are cautioning against getting too optimistic as the final quarter of 2010 gets underway. September's success is attributed mainly to actual economic readings being higher than forecasts. However, investors need to bear in mind that economic forecasts were somewhat pessimistic following dismal market performance in August amidst fears of a double-dip in the economy. So, while September’s economic readings were better than expected, they were by no means great.

