Stock Quotes in this Article: CYBX, GCOM, JACK, MAKO, RIMM, SCHL, SCMR, AMRS

WINDERMERE, Fla. (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. Many times when above average volume moves into 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.”

>>5 Rocket Stocks to Buy for 2012

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.

Let's take a look at a number of stocks rising on unusual volume today. They are all recording volume in midday trading that is already at least 50% above their average trading volume for a full day.

Research In Motion

Research In Motion (RIMM) is a designer, manufacturer and marketer of wireless solutions for the worldwide mobile communications market. This stock is trading up 8.9% at $15.76 in recent trading.

Today’s Volume: 20 million

Average Volume: 22.8 million

Volume % Change: 100%

From a technical standpoint, RIMM is starting to break out today now that the stock is moving above some near-term overhead resistance at $15 on decent volume. If shares of RIMM can manage to sustain a high-volume move and close above $15 and close near the daily highs, then this stock should setup to re-test its 50-day moving average of $17.33 in the near future.

A high-volume move and close above $17.33 should setup RIMM to trade back into the $20s.

Research In Motion, which shows up on a recent list of 6 Tech Stocks to Avoid in 2012, was featured recently in "7 Extreme Stocks to Trade in This Volatile Market" and "5 Big Surprise Stock Losers of 2011."

Scholastic

Scholastic (SCHL), together with its subsidiaries, is a global children’s publishing, education and media company. Scholastic is a publisher and distributor of children’s books and a provider of educational technology products and related services. The stock is trading up 4.1% at $31.20 in recent trading.

Today’s Volume: 156,000

Average Volume: 164,114

Volume % Change: 126%

From a technical standpoint, SCHL has started to break out today above some near-term overhead resistance at $30 to $31 a share on decent volume.

Market players should now watch for the next breakout to trigger if SCHL can take out $31.65 with heavy volume. Look for a volume move over $31.65 that registers near or above 164,114 shares. If we get that action, then look for SCHL to re-test its next significant overhead resistance level at $40.

Amyris

Amyris (AMRS) is an integrated renewable products company, offers renewable compounds for a variety of markets. The stock is trading up 5.1% at $12.13 in recent trading.

Today’s Volume: 397,000

Average Volume: 258,139

Volume % Change: 273%

From a technical standpoint, AMRS has started to trigger a breakout trade today now that this stock is moving above some near-term overhead resistance at $11.35 to $11.60 a share on big volume.

Traders should now watch for the next breakout trade to trigger once AMRS takes out $12.52 to $12.79 (its 50-day moving average) with volume. A high-volume move and close above those levels should set up AMRS to trade up towards $14 to $16.

Home Inns & Hotels Management

Home Inns & Hotels Management (HMIN) is an economy hotel chain in the People’s Republic of China. The stock is trading up 5% at $27.08 in recent trading.

Today’s Volume: 404,000

Average Volume: 446,388

Volume % Change: 170%

From a technical standpoint, HMIN has started to bounce big today off of some previous support levels near $25. Market players should now watch for a breakout trade to trigger if HMIN can manage to sustain a high-volume move and close above some near-term overhead resistance at $28.25.

Look for volume that’s near or above 446,388 shares if $28.25 is taken out soon. A sustained high-volume move and close over $28.25 should setup HMIN to re-test its 50-day moving average of $30.48.

Jack in the Box

Jack in the Box (JACK) operates and franchises Jack in the Box quick-service restaurants and Qdoba Mexican Grill fast-casual restaurants. This stock is trading up 6.7% at $22.32 in recent trading.

Today’s Volume: 419,000

Average Volume: 381,138

Volume % Change: 130%

From a technical standpoint, JACK is gapping up big today and breaking out above some major overhead resistance at $21.40 on heavy volume. That $21.40 level has marked major resistance for this stock for the past five months.

As long as JACK can manage to close above $21.40 and near its daily highs today, then this stock should set up to re-test its next significant overhead resistance level at $24.17 in the near future.

Sycamore Networks

Sycamore Networks (SCMR) develops and markets intelligent bandwidth management solutions for fixed line and mobile network operators worldwide and provides services associated with such products. This stock is trading up 4.9% at $18.78 in recent trading.

Today’s Volume: 66,000

Average Volume: 83,275

Volume % Change: 68%

From a technical standpoint, SCMR is starting to flirt with trading above its 50-day moving average today of $18.75. Market players should now look for long biased trades if SCMR can manage to sustain a high-volume move and close above $18.75.

Volume at last check is still below the daily average of 83,275, so look for volume to improve on any close over $18.75 today or in the near future. A high-volume move and close over $18.75 should setup SCMR to re-rest its 200-day moving average of $20.25.

Mako Surgical

Mako Surgical (MAKO) is a medical device company that markets its advanced robotic arm solution and orthopedic implants for orthopedic procedures. This stock is trading up 12.5% at $28.36 in recent trading.

Today’s Volume: 904,000

Average Volume: 978,519

Volume % Change: 91%

Shares of MAKO are ripping to the upside today after Summer Street upgraded the stock with a $35 price target citing growth of the company’s robotic arm for joint replacement surgery. The firm thinks current levels are offering an attractive entry point and thinks that Mako could be an increasingly likely acquisition target.

From a technical standpoint, MAKO is starting to flirt with a near-term breakout if the stock can manage to sustain a high-volume move and close above $27.48. At last check, the stock is trading at $28.36 and volume is tracking pretty strong at around 70,000 shares short of its average daily volume.

If MAKO can manage to close near its daily highs, then look for this stock to re-test its 200-day moving average of $30.62 in the near future.

Globecomm Systems

Globecomm Systems (GCOM) engages in the provision of satellite-based network solutions to government, communications service providers, commercial enterprises, and media and content broadcasters in the U.S., Europe, South America, Africa, the Middle East, and Asia. This stock is trading up 5.4% at $14.43 in recent trading.

Today’s Volume: 93,500

Average Volume: 94,677

Volume % Change: 100%

From a technical standpoint, GCOM is flirting with a major breakout today if this stock can manage to sustain a high-volume move and close above some near-term overhead resistance at $14.62. A high-volume move and close over $14.62 should set this stock up to make a run at its 52-week high of $16.43.

The reason a good percentage pop should happen for GCOM on a move over $14.62 is that that level has held as tough resistance for the past five months.

Globecomm is one of TheStreet Ratings' top-rated communications equipment stocks.

Cyberonics

Cyberonics (CYBX) is a neuromodulation company engaged in the design, development and commercialization of implantable medical devices that provide a therapy, vagus nerve stimulation therapy, for the treatment of refractory epilepsy and treatment-resistant depression. This stock is trading up 1.6% at $34.04 in recent trading.

Today’s Volume: 183,000

Average Volume: 176,614

Volume % Change: 85%

Shares of CYBX are moving higher today after the company said the Food and Drug Administration has approved its re-designed AspireHC generator, which was the subject of a voluntary product withdrawal in August 2011.

From a technical standpoint, CYBX has flirted with a breakout today when the stock briefly traded above some near-term overhead resistance at $34.43 on decent volume. Market players should now watch for a sustained high-volume move and close above $34.43.

If we get that action, then look for CYBX to challenge a bigger breakout above $35.88. That $35.88 level is its 52-week high, so any high-volume move over that price could pop the stock sharply to the upside.

Cyberonics is one of TheStreet Ratings' top-rated health care equipment stocks.

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

-- Written by Roberto Pedone in Winderemere, Fla.

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

Roberto Pedone, based out of Windermere, Fla., is an independent trader who focuses on stocks, options, futures, commodities and currencies. He is also an outside contributor to Beconequity.com and maintains the website Maddmoney.net, which he sold to Blue Wave Advisors in 2008. Roberto studied International Business at The Milwaukee School of Engineering, and he spent a year overseas studying business in Lubeck, Germany.