BALTIMORE ( Stockpickr) -- Today may be Halloween, but it looks like Mr. Market has already shaken the skeletons out of his closet. So far, October has produced the biggest single-month gains since 1974 -- unless you're short the market right now, there's nothing scary about that.As of this writing, October gains in the S&P 500 have weighed in at 13.4%. In a few ways, that number is a bit misleading -- year-to-date gains still sit in the very low single-digits for most major indices. The fact that the broad market found a bottom as the calendar ticked over to October looks more coincidental than causal. Even so, that large bullish push in stocks indicates a massive shift in investor sentiment right now. It also means that stocks actually stand a chance at re-testing April's highs before the end of 2011. To take advantage of that upside momentum, we're turning to a new set of Rocket Stocks this week. >>5 Stocks Under $10 With Big Upside Potential 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 127 weeks, our weekly list of five plays has outperformed the S&P 500 by 78.2%. This week, we'll aim to continue beating the market with another set of names. With that, here's a look at this week's Rocket Stocks.