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.

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.

With that in mind, let's take a look at several stocks rising on unusual volume recently.

Gigamon

Gigamon (GIMO) designs, develops and sells products and services that provide customers with visibility and control of network traffic. This stock closed up 14.3% to $13.25 in Friday's trading session.

Friday's Volume: 3.04 million
Three-Month Average Volume: 490,282
Volume % Change: 439%

From a technical perspective, GIMO gapped up sharply higher here with strong upside volume flows. This explosion to the upside on Friday also pushed shares of GIMO into breakout territory, since the stock took out some near-term overhead resistance levels at $12 to $12.64 and $13. This move also pushed shares of GIMO into its previous gap-down-day zone from July that started just above $18. Market players should now look for a continuation move to the upside in the short-term if GIMO manages to take out Friday's intraday high of $14.15 with high volume.

Traders should now look for long-biased trades in GIMO as long as it's trending above Friday's intraday low of $13.11 or above more near-term support at $12 and then once it sustains a move or close above $14.15 with volume that hits near or above 490,282 shares. If that move starts soon, then GIMO will set up to re-fill some more of its previous gap-down-day zone from July that started just above $18.

RealPage

RealPage(RP) - Get Report provides on-demand software solutions for the rental housing industry in North America. This stock closed up 13.8% at $18.35 in Friday's trading session.

Friday's Volume: 1.07 million
Three-Month Average Volume: 757,550
Volume % Change: 251%

From a technical perspective, RP gapped up sharply higher here right off its 50-day moving average of $15.96 with heavy upside volume flows. This large spike to the upside on Friday also pushed shares of RP into breakout territory, since the stock cleared some key overhead resistance levels at $17 to its gap-down-day high from July at right around $17.50. Shares of RP also flirted with its 200-day moving average of $18.59, before closing just below that level at $18.35. Market players should now look for a continuation move higher in the short-term if RP manages to take out Friday's intraday high of $19.06 with high volume.

Traders should now look for long-biased trades in RP as long as it's trending above Friday's intraday low of $17.84 or above $17 and then once it sustains a move or close above Friday's intraday high of $19.06 with volume that's near or above 757,550 shares. If that move gets set off soon, then RP will set up to re-fill some more of its previous gap-down-day zone from July that started near $22.

Encore Wire

Encore Wire(WIRE) - Get Report manufactures and supplies electrical building wires and cables for use in interior electrical wiring in commercial and industrial buildings, homes, apartments and manufactured housings. This stock closed up 7% at $40.07 in Friday's trading session.

Friday's Volume: 356,000
Three-Month Average Volume: 109,356
Volume % Change: 266%

From a technical perspective, WIRE spiked sharply higher here right above some near-term support at $36.67 with above-average volume. This big spike to the upside on Friday also pushed shares of WIRE into breakout territory, since the stock took out some near-term overhead resistance levels at its 50-day moving average of $39.58 to some more near-term resistance at $38.96. Market players should now look for a continuation move to the upside in the short-term if WIRE manages to take out Friday's intraday high of $40.81 with high volume.

Traders should now look for long-biased trades in WIRE as long as it's trending above $38 or above Friday's intraday low of $37.36 and then once it sustains a move or close above $40.81 with volume that this near or above 109,356 shares. If that move develops soon, then WIRE will set up to re-test or possibly take out its next major overhead resistance levels at $43.40 to its 200-day moving average of $46.70, or even $49.66.

The Rubicon Project

The Rubicon Project(RUBI) - Get Report is engaged in automating the buying and selling of advertising. This stock closed up 7.5% at $10.96 in Friday's trading session.

Friday's Volume: 2.32 million
Three-Month Average Volume: 344,022
Volume % Change: 636%

From a technical perspective, RUBI ripped sharply higher here back above its 50-day moving average of $10.56 with monster upside volume flows. This large spike to the upside on Friday is now starting to push shares of RUBI within range of triggering a major breakout trade. That trade will hit if RUBI manages to clear Friday's intraday high of $12.44 and then once it takes out some more key overhead resistance levels at $12.63 to $13.09 with high volume.

Traders should now look for long-biased trades in RUBI as long as it's trending above its 50-day at $10.56 or above more near-term support around $10 and then once it sustains a move or close above those breakout levels with volume that's near or above 344,022 shares. If that breakout materializes soon, then RUBI will set up to re-test or possibly take out its next major overhead resistance levels at $15.41 to $17.

To see more stocks rising on unusual volume, check out the Stocks Rising on Unusual Volume portfolio on Stockpickr.

-- Written by Roberto Pedone in Delafield, Wis.

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At the time of publication, author had no positions in stocks mentioned. Roberto Pedone, based out of Delafield, Wis., is an independent trader who focuses on technical analysis for small- and large-cap stocks, options, futures, commodities and currencies. Roberto studied international business at the Milwaukee School of Engineering, and he spent a year overseas studying business in Lubeck, Germany. His work has appeared on financial outlets including CNBC.com and Forbes.com. You can follow Pedone on Twitter at www.twitter.com/zerosum24 or @zerosum24.