DELAFIELD, Wis. ( Stockpickr) -- Professional traders running mutual funds and hedge funds don't just look at a stock's price moves; they also track big changes in volume activity. Often when above-average volume moves into an equity, it precedes a large spike in volatility.>>5 Stocks Poised for Breakouts Major moves in volume can signal unusual activity, such as insider buying or selling -- or buying or selling by "superinvestors." Unusual volume can also be a major signal that hedge funds and momentum traders are piling into a stock ahead of a catalyst. These types of traders like to get in well before a large spike, so it's always a smart move to monitor unusual volume. That said, remember to combine trend and price action with unusual volume. Put them all together to help you decipher the next big trend for any stock. >>5 Stocks Under $10 Set to Soar With that in mind, let's take a look at several stocks rising on unusual volume today. SouFun SouFun ( SFUN) operates a real estate Internet portal in China. This stock closed up 11.2% at $57.19 in Friday's trading session. Friday's Volume: 2.11 million
Three-Month Average Volume: 1.28 million
Volume % Change: 135% From a technical perspective, SFUN ripped sharply higher here right off its 50-day moving average of $50.63 with above-average volume. This stock has been uptrending strong for the last four months, with shares soaring higher from its low of $22.29 to its recent high of $59.50. During that uptrend, shares of SFUN have been making mostly higher lows and higher highs, which is bullish technical price action. That move has now pushed shares of SFUN within range of triggering a big breakout trade. That trade will hit if SFUN manages to take out Friday's high of $57.74 to its 52-week high at $59.50 with high volume. Traders should now look for long-biased trades in SFUN as long as it's trending above $55 or $54 and then once it sustains a move or close above those breakout levels with volume that's near or above 1.28 million shares. If that breakout hits soon, then SFUN will set up to enter new 52-week-high territory, which is bullish technical price action. Some possible upside targets off that breakout are $65 to $70.