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.

Echo Global Logistics

Echo Global Logistics (ECHO) - Get Report provides technology-enabled transportation and supply chain management solutions in the U.S. This stock closed up 9.5% to $26.16 in Monday's trading session.

Monday's Volume: 500,000
Three-Month Average Volume: 220,535
Volume % Change: 135%

From a technical perspective, ECHO exploded sharply higher here back above its 50-day moving average of $24.98 with above-average volume. This strong move to the upside on Monday also pushed shares of ECHO into breakout territory, since the stock took out some near-term overhead resistance at $25.72. Shares of ECHO are now quickly moving within range of triggering another big breakout trade. That trade will hit if ECHO manages to clear Monday's intraday high of $26.50 to its 52-week high of $27.20 with high volume.

Traders should now look for long-biased trades in ECHO as long as it's trending above its 50-day at $24.98 or above Monday's intraday low of $23.81 and then once it sustains a move or close above those breakout levels with volume that hits near or above 220,535 shares. If that breakout hits soon, then ECHO will set up to enter new 52-week-high territory, which is bullish technical price action. Some possible upside targets off that breakout are $30 to $35.

Wesco International

Wesco International (WCC) - Get Report distributes electrical, industrial and communications maintenance, repair and operating products as well as original equipment manufacturers products and construction materials in North America and internationally. This stock closed up 1.7% at $78.50 in Monday's trading session.

Monday's Volume: 1.27 million
Three-Month Average Volume: 457,706
Volume % Change: 205%

From a technical perspective, WCC bounced modestly higher here with above-average volume. This stock has been uptrending over the last few weeks, with shares moving higher from its low of $68.97 to its recent high of $81.16 with strong upside volume flows. During that uptrend, shares of WCC have been making mostly higher lows and higher highs, which is bullish technical price action. That move has now pushed shares of WCC within range of triggering a near-term breakout trade. That trade will hit if WCC manages to take out its 50-day moving average of $79.93 to some more near-term overhead resistance at $81.16 with high volume.

Traders should now look for long-biased trades in WCC as long as it's trending above some key near-term support levels at $76 or at $74 and then once it sustains a move or close above those breakout levels with volume that's near or above 457,706 shares. If that breakout develops soon, then WCC will set up to re-test or possibly take out its next major overhead resistance levels at its 200-day moving average of $84.12 to $84.37, or even $85.69. Any high-volume move above those levels will then give WCC a chance to tag $88 to $90.

Cynosure

Cynosure (CYNO) develops, manufactures and markets aesthetic treatment systems primarily to the dermatology, plastic surgery and general medical markets. This stock closed up 2.5% at $21.22 in Monday's trading session.

Monday's Volume: 423,000
Three-Month Average Volume: 188,357
Volume % Change: 175%

From a technical perspective, CYNO jumped higher here with above-average volume. This stock recently formed a double bottom chart pattern at $18.63 to $19.04. Since forming that bottom, shares of CYNO have started to bounce higher and it's now approaching a near-term breakout trade. That trade will hit if CYNO manages to take out its 50-day moving average of $21.86 to some more near-term overhead resistance at $21.98 with high volume.

Traders should now look for long-biased trades in CYNO as long as it's trending above $20 or above those double bottom support levels and then once it sustains a move or close above those breakout levels with volume that hits near or above 188,357 shares. If that breakout triggers soon, then CYNO will set up to re-test or possibly take out its next major overhead resistance levels at $23.85 to its 200-day moving average of $24.02. Any high-volume move above those levels will then give CYNO a chance to tag or take out $25.

Varian Medical Systems

Varian Medical Systems (VAR) - Get Report designs, manufactures, sells and services medical devices and software for treating cancer and other medical conditions with radiotherapy, radiosurgery, proton therapy and brachytherapy worldwide. This stock closed up 1.5% at $82.01 in Monday's trading session.

Monday's Volume: 1.38 million
Three-Month Average Volume: 724,070
Volume % Change: 112%

From a technical perspective, VAR jumped modestly higher here with above-average volume. This stock recently gapped down sharply from $82.12 to $77.70 with heavy downside volume. Following that move, shares of VAR have started to rebound off that $77.70 low and it's now quickly moving within range of triggering a big breakout trade. That trade will hit if VAR manages to take out some key near-term overhead resistance levels at $82.12 to both its 50-day at $82.43 and its 200-day at $82.59 with high volume.

Traders should now look for long-biased trades in VAR as long as it's trending above Monday's intraday low of $80.73 or above $79 and then once it sustains a move or close above those breakout levels with volume that's near or above 724,070 shares. If that breakout gets underway soon, then VAR will set up to re-test or possibly take out its next major overhead resistance levels at $85 to $86.17, or even its 52-week high at $87.85.

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.