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 to Break Out With that in mind, let's take a look at several stocks rising on unusual volume today. Martin Marietta Materials Martin Marietta Materials ( MLM) is a producer of aggregates products for the construction industry. This stock closed up 4.2% at $102.75 in Monday's trading session. Monday's Volume: 1.31 million
Three-Month Average Volume: 326,695
Volume % Change: 292% >>5 Rocket Stocks to Buy in November From a technical perspective, MLM soared higher here back above its 200-day moving average of $100.32 and into breakout territory above $100.50 with strong upside volume. This stock recently formed a double bottom chart pattern at $94.25 to $94.01. Following that bottom, shares of MLM have started to uptrend and move back above both its 50-day and 200-day moving averages. That move has now pushed shares of MLM within range of triggering a breakout trade. That trade will hit if MLM manages to take out Monday's high of $104.56 to some past overhead resistance at $106.54 with high volume. Traders should now look for long-biased trades in MLM as long as it's trending above its 200-day at $100.32 and then once it sustains a move or close above those breakout levels with volume that's near or above 326,695 shares. If that breakout triggers soon, then MLM will set up to re-test or possibly take out its next major overhead resistance levels at $110 to $112.76, or its 52-week high at $113.65.