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.>>5 Stocks Ready to Break Out This Month 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. >>5 Stocks Set to Soar on Bullish Earnings With that in mind, let's take a look at several stocks rising on unusual volume today. CaesarStone Sdot-Yam CaesarStone Sdot-Yam ( CSTE) manufactures engineered quartz surfaces. This stock closed up 6.6% to $45.19 in Wednesday's trading session. Wednesday's Volume: 845,000
Three-Month Average Volume: 280,482
Volume % Change: 247% From a technical perspective, CSTE ripped sharply higher here right off its 50-day moving average of $42.38 with strong upside volume. This move pushed shares of CSTE into breakout territory, since the stock took out some near-term overhead resistance at $44.74. Market players should now look for a continuation move higher in the short-term if CSTE can take out some key near-term overhead resistance levels. Traders should now look for long-biased trades in CSTE as long as it's trending above its 50-day at $42.38 and then once it sustains a move or close above Wednesday's high of $47.50 to its all-time high at $48.69 with volume that hits near or above 280,482 shares. If we get that move soon, then CSTE will set up to enter new all-time-high territory, which is bullish technical price action. Some possible upside targets off that move are $55 to $60. PowerSecure International PowerSecure International ( POWR) is a provider of products and services to electric utilities and to their large commercial, institutional and industrial customers. This stock closed up 5.9% at $19.62 in Wednesday's trading session.