Stock Quotes in this Article: APKT, GOOG, SSYS

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.”

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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.

Acme Packet

Acme Packet (APKT) provides session delivery network solutions, which enable the delivery of voice, video, data and unified communications services and applications across Internet Protocol networks. This stock is trading up 5.9% at $18.94 in recent trading.

Today’s Volume: 2.85 million

Average Volume: 2.6 million

Volume % Change: 77%

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From a technical perspective, APKT is ripping higher here with above average volume, and it’s started to enter breakout territory above some near-term overhead resistance at $17.96.

Traders should now look for long-biased trades as long as APKT is trending above its 50-day at $17.12 with strong upside volume flows. I would consider any upside volume day that registers near or above 2,638,970 shares as bullish. If APKT can hold this breakout, then this stock has a great chance of re-testing and possibly taking out its next significant overhead resistance levels at $22.41 to $25.

On the flip side, I would avoid this stock or look for short-biased trades if APKT fails to hold this breakout, and then drops back below some major near-term support at $16.30.

Google

Google (GOOG) is a global technology company focused on improving the ways people connect with information. The company generates revenue primarily by delivering online advertising. This stock is trading up 1% at $683.60 in recent trading.

Today’s Volume: 1.6 million

Average Volume: 2.2 million

Volume % Change: 53%

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From a technical perspective, GOOG is moving notably higher here with decent volume, and it’s started to break out above some near-term overhead resistance at $680.

Traders should now look for long-biased trades in GOOG as long as it’s trending above today’s low of $676.15 with strong upside volume flows. I would consider any upside volume day that registers near or above 2.2 million shares as bullish.

Keep in mind that GOOG could even pull back towards $660 and still be setting up to go higher. If GOOG can continue to hold its uptrend, then this stock should well be on its way towards $700 or higher in the near future. It’s even possible that GOOG is setting up to re-test its all-time high near $714.

Stratasys

Stratasys (SSYS) is a manufacturer of 3D printers and production systems for the office-based rapid prototyping and direct digital manufacturing markets. This stock is trading up 4.9% at $69.16 in recent trading.

Today’s Volume: 429,000

Average Volume: 417,308

Volume % Change: 62%

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From a technical perspective, SSYS is ripping higher today with above average volume. This move is coming after SSYS recently found buying support at around $60.77, which sits just above its 50-day moving average of $57.80. Shares of SSYS have been uptrending strong for the past four months with shares rising from a low of $42.71 to a recent high of $73.32.

Traders should now look for long-biased trades in SSYS as long as it holds today’s low of $66.22. If SSYS can hold its trend above $66.22, then this stock has a great chance of re-testing and possibly taking out its all-time high of $73.32. Any high-volume move above $73.32 should be considered bullish, since SSYS would enter new all-time high territory. Some possible targets if we trend above $73.32 are $80 to $100.

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.