Stock Quotes in this Article: MTRX, PCLN, ROG, SODA

MADISON, 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."

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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 today.

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Matrix Service

Matrix Service (MTRX) provides construction and repair and maintenance services mainly to the energy and energy related industries. This stock is trading up 4% at $16.15 in recent trading.

Today's Volume: 458,000

Average Volume: 154,626

Volume % Change: 484%

Shares of MTRX are trending up today after the company said it beat Wall Street EPS estimates by 2 cents per share and beat revenue estimates.

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From a technical perspective, MTRX is ripping higher here back above its 50-day moving average of $15.13 with heavy upside volume. This move has started to push shares of MTRX into breakout territory, since the stock has taken out some near-term overhead resistance levels at $15.59 to $15.79.

Traders should now look for long-biased trades in MTRX as long as it's trending above those key breakout levels with bullish upside volume flows. I would consider any upside volume day that registers near or above its three-month average action of 154,626 shares as bullish. If MTRX can maintain that trend, then this stock will set up to re-test or possibly take out its next major overhead resistance levels at $16.74 to $17.21. Any high-volume move above $17.21 will then push shares of MTRX into new 52-week high territory, which is bullish technical price action.

SodaStream International

SodaStream International (SODA) is engaged in developing, manufacturing and marketing home beverage carbonation systems and related products. This stock is trading up 7.3% at $59.56 in recent trading.

Today's Volume: 1.28 million

Average Volume: 919,761

Volume % Change: 156%

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From a technical perspective, SODA is soaring higher here and breaking out above some near-term overhead resistance at $56.62 with above-average volume. This move has started to push shares of SODA into new 52-week high territory, which is bullish technical price action.

Traders should now look for long-biased trades in SODA as long as it's trending above $56.62 with strong upside volume flows. I would consider any upside volume day that registers near or above its three-month average action of 919,761 shares as bullish. If SODA can maintain this trend, then this stock will set up to re-test or possibly take out its next major overhead resistance levels at $65 to $70.

Priceline.com

Priceline.com (PCLN) is an online travel company that offers its customers a range of travel services, including hotel rooms, car rentals, airline tickets, vacation packages, cruises and destination services. This stock is trading up 3.7% at $764.95 in recent trading.

Today's Volume: 1.61 million

Average Volume: 608,173

Volume % Change: 312%

Shares of PCLN are moving higher today after the company said its first quarter profit and revenue came in ahead of Wall Street expectations, due to hotel and international business improvements.

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From a technical perspective, PCLN is exploding higher here and breaking out above some near-term overhead resistance at $745.24 with above-average volume. This move has pushed shares of PCLN into new 52-week-high territory, which is bullish technical price action. Shares of PCLN are now quickly moving within range of triggering another major breakout trade. That trade will hit if PCLN manages to take out some past overhead resistance at $774.96 with high volume.

Traders should now look for long-biased trades in PCLN as long as it's trending above $745.24 and then once it sustains a move or close above today's high of $769.67 to $774.96 with volume that hits near or above 608,173 shares. If that breakout triggers soon, then PCLN will set up to trend well north of $800 in the near future.

Rogers

Rogers (ROG) manufactures specialty materials that are grouped into three reportable segments: high-performance foams, printed circuit materials and power electronics solutions. This stock is trading up 2% at $45.49 in recent trading.

Today's Volume: 127,000

Average Volume: 76,432

Volume % Change: 129%

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From a technical perspective, ROG is bouncing higher here right off its 200-day moving average of $44.33 with above-average volume. This stock has been uptrending strongly for the last month, with shares moving higher from its low of $37.20 to its intraday high of $45.68. During that move, shares of ROG have been mostly making higher lows and higher highs, which is bullish technical price action. That move is now quickly pushing shares of ROG within range of triggering a near-term breakout trade, which will hit if ROG manages to take out its 50-day moving average of $45.78 with high volume.

Traders should now look for long-biased trades in ROG as long as it's trending above its 200-day at $44.33 and then once it sustains a move or close above its 50-day at $45.78 with volume that hits near or above 76,432 shares. If that breakout triggers soon, then ROG will set up to re-test or possibly take out its next major overhead resistance levels at $48 to $50.

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

-- Written by Roberto Pedone in Madison, Wis.

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At the time of publication, author had no positions in stocks mentioned.

Roberto Pedone, based out of Madison, 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.