4 Stocks Breaking Out on Big Volume: Polypore, AptarGroup and More

 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.

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.

M/A-Com Technology Solutions

M/A-Com Technology Solutions (MTSI) , through its subsidiaries, designs, develops, manufactures and markets semiconductors and modules for use in wireless and wireline applications across the radio frequency, microwave and millimeterwave spectrum. This stock is trading up 6.3% to $32.53 in Friday's trading session.

Friday's Volume: 1.70 million
Three-Month Average Volume: 270,163
Volume % Change: 1830%

From a technical perspective, MTSI is gapping up sharply higher here right off its 50-day moving average of $30.27 with strong upside volume flows. This strong move to the upside on Friday is now quickly pushing shares of MTSI within range of triggering a major breakout trade. That trade will hit if MTSI manages to clear some key near-term overhead resistance levels at $34 to its 52-week high of $34.85 with high volume.

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