It has been widely noted and discussed that this month's was one of the strongest monthly gains in September ever. We went one step further with our analysis to see what that means for the rest of the year. Below we looked at the six other Septembers where the S&P 500 gained in excess of 5%. As shown, in each of the recent occurrences the market is up for the year after September's gain and posts a gain in the fourth quarter. Don't look for October to be off the charts bullish, but there is a good chance of a high single digit gain going into Q4.