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 Insiders Love Right Now 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 Trades to Take for October Gains With that in mind, let's take a look at several stocks rising on unusual volume today. ManpowerGroup ManpowerGroup ( MAN), and its subsidiaries, provides integrated voice, video and data communications services to end-user customers and other communications providers. This stock closed up 2.4% at $74.88 in Wednesday's trading session. Wednesday's Volume: 1.31 million
Three-Month Average Volume: 602,036
Volume % Change: 140% >>5 Short-Squeeze Stocks Ready to Pop in October From a technical perspective, MAN jumped higher here right above some near-term support at $71.74 with above-average volume. This stock has been uptrending strong for the last three months, with shares moving higher from its low of $53.60 to its recent high of $77.32. During that uptrend, shares of MAN have been making mostly higher lows and higher highs, which is bullish technical price action. That move has now pushed shares of MAN within range of triggering a big breakout trade. That trade will hit if MAN manages to take out some near-term overhead resistance levels at $76 to its 52-week high at $77.31 with high volume. Traders should now look for long-biased trades in MAN as long as it's trending above Wednesday's low of $73.55 or above support at $71.74 and then once it sustains a move or close above those breakout levels with volume that hits near or above 602,036 shares. If that breakout hits soon, then MAN will set up to enter new 52-week-high territory, which is bullish technical price action. Some possible upside targets off that breakout are $80 to $83.