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.

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.

With that in mind, let's take a look at several stocks rising on unusual volume recently.

Knowles

  • Monday's Volume: 1.02 million
  • Three-Month Average Volume: 1.62 million
  • Volume % Change: 242%

Knowles  (KN - Get Report) designs, manufactures, and sells products and components to the mobile communications, consumer electronics, medical technology, telecommunications infrastructure, military, aerospace and industrial markets worldwide. This stock is trading up 9.5% to $17.95 in Monday's trading session.

From a technical perspective, Knowles is ripping sharply higher here and breaking out above some near-term overhead resistance levels at $16.86 to $17.15 a share with strong upside volume flows. This relative strength versus the overall market weakness is demonstrating a very bullish tone for shares of Knowles. Market players should now look for a continuation move higher in the short-term if this stock manages to take out Monday's intraday high of $18.20 with high volume.

Traders should now look for long-biased trades in Knowles as long as it's trending above Monday's intraday low of $16.99 or above its 50-day moving average of $16.75 and then once it sustains a move or close above Monday's intraday high of $18.20 with volume that hits near or above 1.62 million shares. If that move gets underway soon, then this stock will set up to re-test or possibly take out its next major overhead resistance levels at its 200-day moving average of $19.25 to $19.60, or even $20.25 a share.

Multi-Color

  • Monday's Volume: 45,000
  • Three-Month Average Volume: 85,196
  • Volume % Change: 65%

Multi-Color  (LABL - Get Report) is engaged in label solutions business supporting brands, including producers of home and personal care, wine and spirit, food and beverage, healthcare and specialty consumer products. This stock is trading up 1.2% to $69.24 in Monday's trading session.

From a technical perspective, Multi-Color is trending higher here and bucking the overall market weakness with decent upside volume flows. This stock has been uptrending over the last month and change, with shares moving higher from its low of $60.45 to its recent high of $69.29 a share. During that uptrend, this stock has been making mostly higher lows and higher highs, which is bullish technical price action. This move higher has now started to push shares of Multi-Color within range of triggering a near-term breakout trade. That trade will trigger if this stock manages to take out some near-term overhead resistance levels at $69.29 to $70 a share with high volume.

Traders should now look for long-biased trades in Multi-Color as long as it's trending above some near-term support at $69 and then once it sustains a move or close above those breakout levels with volume that hits near or above 85,196 shares. If that breakout gets set off soon, then this stock will set up to re-test or possibly take out its net major overhead resistance levels at $71.47 to its 52-week high of $72.47 a share.

FARO Technologies

  • Monday's Volume: 80,000
  • Three-Month Average Volume: 157,169
  • Volume % Change: 53%

FARO Technologies  (FARO - Get Report) designs, develops, manufactures, markets and supports software driven, three-dimensional measurement, imaging and realization systems. This stock is trading up 2.1% to $34.80 in Monday's trading session.

From a technical perspective, FARO Technologies is trending notably higher here right above its new 52-week low of $32.95 with decent upside volume flows. This stock has been downtrending badly over the last two months, with shares moving lower from its high of $45.92 to its new 52-week low of $32.95 a share. During that downtrend, this stock has been consistently making lower highs and lower lows, which is bearish technical price action. That said, shares of FARO Technologies is now starting to spike higher off that 52-week low and it's quickly moving within range of triggering a near-term breakout trade. That trade will trigger if this stock manages to take out its 20-day moving average of $36.17 with high volume.

Traders should now look for long-biased trades in FARO Technologies as long as it's trending above its new 52-week low of $32.95 and then once it sustains a move or close above its 20-day moving average of $36.17 with volume that hits near or above 157,169 shares. If that breakout kicks off soon, then this stock will set up to re-test or possibly take out its next major overhead resistance levels at $38 to its 50-day moving average of $38.67, or even $39 to $40 a share.

RBC Bearings

  • Monday's Volume: 70,000
  • Three-Month Average Volume: 108,448
  • Volume % Change: 50%

RBC Bearings  (ROLL - Get Report) manufactures and markets precision plain, roller and ball bearings primarily in North America, Europe, Asia and Latin America. This stock is trading up 2% to $59.69 in Monday's trading session.

From a technical perspective, RBC Bearings is spiking notably higher here back above its 20-day moving average of $59.39 and displaying relative strength versus the overall market weakness with decent upside volume flows. This stock recently formed a double bottom chart pattern, after shares found some buying interest at $57.59 to $57.46 a share. Following that bottom, shares of RBC Bearings have now started to trend back above its 20-day at $59.39 and it's quickly moving within range of triggering a near-term breakout trade. That trade will trigger if this stock manages to take out some near-term overhead resistance levels at $61.03 to $62 a share with high volume.

Traders should now look for long-biased trades in RBC Bearings as long as it's trending above those recent double bottom support levels and then once it sustains a move or close above those breakout levels with volume that hits near or above 108,448 shares. If that breakout materializes soon, then this stock will set up to re-test or possibly take out its next major overhead resistance levels at its 50-day moving average of $63.47 to its 200-day moving average of $66.95, or even $68 a share.

Disclosure: This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stocks mentioned.