4 Big-Volume Stocks Trading Higher

 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.

Aspen Technology (AZPN) provides process optimization software solutions to manage and optimize plant and process design, operational performance and supply chain planning internationally. This stock closed up 1.3% to $47.40 in Friday's trading session.

Friday's Volume: 1.14 million
Three-Month Average Volume: 469,321
Volume % Change: 134%

From a technical perspective, AZPN trended modestly higher here with above-average volume. This stock has been uptrending very strong for the last six months, with shares soaring higher from its low of $33.31 to its intraday high of $48.18. During that uptrend, shares of AZPN have been consistently making higher lows and higher highs, which is bullish technical price action. Traders should now look for a continuation move higher in the short-term if AZPN manages to clear Friday's high of $48.18 with strong volume.

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