MADISON, 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." >>3 Huge Stocks on Traders' Radars 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. >>5 Stocks Insiders Love Right Now Tessera Technologies Tessera Technologies ( TSRA), through its subsidiaries, develops, licenses and delivers miniaturization techologies and products for electronic devices worldwide. This stock is trading up 2.3% at $19.24 in recent trading. Today's Volume: 596,000
Average Volume: 318,418
Volume % Change: 182% >>5 Tech Stocks Under $10 to Watch From a technical perspective, TSRA is trending higher here right above its 50-day moving average at $18.36 with above-average volume. This stock has been uptrending strong for the last six months, with shares moving higher from its low of $13.50 to its recent high of $20.01. During that uptrend, shares of TSRA have been mostly making higher lows and higher highs, which is bullish technical price action. That move has now pushed TSRA within range of triggering a major breakout trade. That trade will hit if TSRA manages to take out some key overhead resistance levels at $20.01 to $20.23 with high volume. Traders should now look for long-biased trades in TSRA as long as it's trending above today's low of $19.12 and then once it sustains a move or close above those breakout levels with volume that hits near or above 318,418 shares. If that breakout triggers soon, then TSRA will set up to re-test or possibly take out its next major overhead resistance level at $22.50.