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 Hated Earnings Stocks You Should Love 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 Poised for Breakouts With that in mind, let's take a look at several stocks rising on unusual volume today. Core-Mark Core-Mark ( CORE) markets fresh and broad-line supply solutions to the convenience retail industry in North America. This stock closed up 2% at $73.81 in Monday's trading session. Monday's Volume: 119,000
Three-Month Average Volume: 50,381
Volume % Change: 125% From a technical perspective, CORE trended modestly higher here right above its 50-day moving average of $70.74 with above-average volume. This stock has been uptrending strong for the last six months, with shares moving higher from its low of $58.47 to its recent high of $76.20. During that move, shares of CORE have been making mostly higher lows and higher highs, which is bullish technical price action. That move has now pushed shares of CORE within range of triggering a near-term breakout trade. That trade will hit if CORE manages to take out Monday's high of $74.31 to its 52-week high of $76.20 with high volume. Traders should now look for long-biased trades in CORE as long as it's trending above Monday's low of $72.02 or above its 50-day at $70.74 and then once it sustains a move or close above those breakout levels with volume that's near or above 50,381 shares. If that breakout hits soon, then CORE will set up to enter new 52-week high territory above $76.20, which is bullish technical price action. Some possible upside targets off that breakout are $83 to $85.