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.

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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.

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

Arris Group

Arris Group (ARRS) provides media entertainment and data communications solutions in the U.S. and internationally. This stock closed up 11.2% to $28.60 in Wednesday's trading session.

Wednesday's Volume: 8.63 million

Three-Month Average Volume: 1.90 million

Volume % Change: 431%

From a technical perspective, ARRS gapped up large here back above its 50-day moving average of $27.58 and above some near-term overhead resistance at $27.10 with heavy upside volume. This move briefly pushed shares of ARRS into breakout territory, since the stock flirted with some more near-term overhead resistance at $28.89. Shares of ARRS tagged an intraday high of $30.37, before it closed off that level at $28.60. Market players should now look for a continuation move higher in the short-term if ARRS manages to take out Wednesday's intraday high of $30.37 to more near-term overhead resistance at $30.64 with high volume.

Traders should now look for long-biased trades in ARRS as long as it's trending above Wednesday's low of $28.16 and then once it sustains a move or close above $30.37 to $30.64 with volume that hits near or above 1.90 million shares. If that move gets underway soon, then ARRS will set up to re-test or possibly take out its 52-week high at $31.42.

Group 1 Automotive

Group 1 Automotive (GPI), through its subsidiaries, operates in the automotive retail industry. This stock closed up 1% at $73.33 in Wednesday's trading session.

Wednesday's Volume: 1.30 million

Three-Month Average Volume: 276,577

Volume % Change: 340%

From a technical perspective, GPI jumped higher here right above some near-term support at $72 with strong upside volume. This move is quickly pushing shares of GPI within range of triggering a big breakout trade. That trade will hit if GPI manages to take out Wednesday's intraday high of $73.97 to some near-term overhead resistance at $74.46 with high volume.

Traders should now look for long-biased trades in GPI as long as it's trending above $72 to $70 and then once it sustains a move or close above those breakout levels with volume that hits near or above 276,577 shares. If that breakout hits soon, then GPI will set up to re-test or possibly take out its next major overhead resistance levels at $77.50 to its 52-week high at $82.40.

Talisman Energy

Talisman Energy (TLM), an oil and gas company, explores for, develops, produces, transports and markets crude oil, natural gas and natural gas liquids. This stock closed up 7.9% to $11.02 in Wednesday's trading session.

Wednesday's Volume: 11.02 million

Three-Month Average Volume: 3.53 million

Volume % Change: 199%

From a technical perspective, TLM ripped sharply higher here right above its 50-day moving average of $10.22 with heavy upside volume. This move pushed shares of TLM into breakout territory, since the stock closed above some near-term overhead resistance at $10.96. Market players should now look for a continuation move higher in the short-term if TLM manages to clear Wednesday's intraday high of $11.08 with strong volume.

Traders should now look for long-biased trades in TLM as long as it's trending above Wednesday's low of $10.31 or above more near-term support at $10.11 and then once it sustains a move or close above Wednesday's high of $11.08 with volume that hits near or above 3.53 million shares. If that move kicks off soon, then TLM will set up to re-test or possibly take out its next major overhead resistance levels at $11.78 to $12.35, or $12.60.

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.