3 Biotech Stocks Spiking on Big Volume

 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.

WuXi PharmaTech (WX), through its subsidiaries, operates as a pharmaceutical, biotechnology and medical device research and development outsourcing company in China and the U.S. This stock closed up 5.6% at $39.07 in Wednesday's trading session.

Wednesday's Volume: 1.89 million
Three-Month Average Volume: 785,333
Volume % Change: 192%

From a technical perspective WX jumped sharply higher here right off its 50-day moving average of $36.79 with above-average volume. This move is quickly pushing shares of WX within range of triggering a major breakout trade. That trade will hit if WX manages to take out some key overhead resistance levels at $39.49 to its 52-week high at $40.72 with high volume.

Traders should now look for long-biased trades in WX as long as it's trending above its 50-day at $36.79 or above $36 and then once it sustains a move or close above those breakout levels with volume that this near or above 785,333 shares. If that breakout hits soon, then WX will set up to enter new 52-week-high territory, which is bullish technical price action. Some possible upside targets off that breakout are $45 to $50.

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