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 Insiders Love Right Now 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 Trades to Take for October Gains With that in mind, let's take a look at several stocks rising on unusual volume today. Mazor Robotics Mazor Robotics ( MZOR) develops and markets surgical robots and complementing products for patients, surgeons, and OR staff. This stock closed up 6.9% to $18.99 in Wednesday's trading session. Wednesday's Volume: 319,000
Three-Month Average Volume: 84,827
Volume % Change: 283% >>5 Short-Squeeze Stocks Ready to Pop in October From a technical perspective, MZOR soared higher here with heavy upside volume. This move pushed shares of MZOR into breakout and new all-time high territory, since the stock took out its previous high at $17.99. This stock has been uptrending strong for the last three months, with shares moving higher from its low of $11.67 to its intraday high of $19.48. During that move, shares of MZOR have been consistently making higher lows and higher highs, which is bullish technical price action. Traders should now look for long-biased trades in MZOR as long as it's trending above Wednesday's low of $17.81 or above $17 and then once it sustains a move or close above its new all-time high at $19.48 with volume that hits near or above 84,827 shares. If we get that move soon, then MZOR will set up to enter new all-time-high territory, which is bullish technical price action. Some possible upside targets off that breakout are $23 to $25.