BALTIMORE ( Stockpickr) -- A short trading week should make for a quiet start to September trading. With big events such as Ben Bernanke's Jackson Hole, Wyoming speech in the rearview mirror this week, that's not such a bad thing.More than any other year in recent memory, 2012 has lived up to the phrase, "new month, new market." Market swings have taken place as if they're scheduled, the S&P 500 topping back at the end of March, and bottoming at the start of June. So, with a new month upon us, what does September hold for stocks? If historical seasonality studies are any indication, investors could be in for a good end to the year. >>5 Stocks Poised for Big Breakouts In the last decade, September through December has historically been the best-performing chunk of the year, earning average performance of 6%. With Mr. Market already up double digits year-to-date, another 6% price hike would be more than welcome. There is a small caveat to that data: Historically, September is the weakest month of the final stretch of the year. Still, with the S&P in a perfect uptrend right now and a correction nearing support in the index, I think that the odds favor more upside in September. That's reason enough to start looking at a new set of Rocket Stocks worth buying this week. >>Top 5 Bargain Stocks in the S&P 500 For the uninitiated, "Rocket Stocks" are our list of companies with short-term gain catalysts and longer-term growth potential. To find them, I run a weekly quantitative screen that seeks out stocks with a combination of analyst upgrades and positive earnings surprises to identify rising analyst expectations, a bullish signal for stocks in any market. After all, where analysts' expectations are increasing, institutional cash often follows. In the last 166 weeks, our weekly list of five plays has outperformed the S&P 500 by 78.65%. Without further ado, here's a look at this week's Rocket Stocks.