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.

DavidsTea

  • Monday's Volume: 301,000
  • Three-Month Average Volume: 142,580
  • Volume % Change: 135%

DavidsTea  (DTEA - Get Report) , a beverage company, provides a selection of loose-leaf teas, pre-packaged teas, tea sachets and tea-related gifts and accessories in Canada and the U.S. This stock traded up 5.6% to $11.56 in Monday's trading session.

From a technical perspective, DavidsTea ripped sharply higher on Monday right above its all-time low of $10.45 a share with above-average volume. This stock has been downtrending badly over the last two months, with shares falling sharply lower off its high of $17.84 to its new all-time low of $10.45 a share. During that downtrend, shares of DavidsTea have been consistently making lower highs and lower lows, which is bearish technical price action. That said, this stock is now starting to rebound higher off that $10.45 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 some near-term overhead resistance at $12 a share with high volume.

Traders should now look for long-biased trades in DavidsTea as long as it's trending above its all-time low of $10.45 a share and then once it sustains a move or close above $12 a share with volume that hits near or above 142,580 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 $12.50 to its 20-day moving average of $13.56, or even $14 to its 50-day moving average of $14.90 a share.

Tiffany 

  • Monday's Volume: 3.50 million
  • Three-Month Average Volume: 1.49 million
  • Volume % Change: 159%

Tiffany (TIF - Get Report) , through its subsidiaries, designs, manufactures and retails jewelry worldwide. This stock traded up 1.8% to $76.55 in Monday's trading session.

From a technical perspective, Tiffany & Co. spiked notably higher on Monday right above some key near-term support levels at $74 to $73.09 a share with strong upside volume flows. This high-volume spike is now starting to push shares of Tiffany & Co. within range of triggering a near-term breakout trade above some key overhead resistance levels. That trade will trigger if this stock manages to take out Monday's intraday high of $77.42 a share and then once it clears its 20-day moving average of $78.89 to its 50-day moving average of $78.96 a share and above more key resistance at $80 a share with high volume.

Traders should now look for long-biased trades in Tiffany & Co. as long as it's trending above some key near-term support levels at $74 to $73.09 a share and then once it sustains a move or close above those breakout levels with volume that hits near or above 1.49 million shares. If that breakout gets underway soon, then this stock will set up to re-test or possibly take out its net major overhead resistance levels at $82 to $84, or even its 200-day moving average of $85.97 a share.

Celldex Therapeutics

  • Monday's Volume: 6.01 million
  • Three-Month Average Volume: 2.09 million
  • Volume % Change: 180%

Celldex Therapeutics  (CLDX - Get Report) , a biopharmaceutical company, develops, manufactures, and commercializes novel therapeutics for human health care in the U.S. This stock traded up 11.8% to $18.11 in Monday's trading session.

From a technical perspective, Celldex Therapeutics spiked sharply higher on Monday on with strong upside volume flows. This high-volume spike to the upside has now pushed shares of Celldex Therapeutics into its previous gap-down-day zone from August that started just above $22 a share. Market players should now look for a continuation move to the upside in the short-term if this stock manages to take out Monday's intraday high of $18.62 a share with high volume.

Traders should now look for long-biased trades in Celldex Therapeutics as long as it's trending above Monday's intraday low of $16.76 or above $16 a share and then once it sustains a move or close above Monday's intraday high of $18.62 a share with volume that hits near or above 2.09 million shares. If that move gets underway soon, then this stock will set up to re-fill some more of its gap-down-day zone that started just over $22 a share.

Kirkland's

  • Monday's Volume: 538,000
  • Three-Month Average Volume: 206,300
  • Volume % Change: 153%

Kirkland's  (KIRK - Get Report)  operates as a specialty retailer of home décor and gifts in the U.S. This stock traded up 6.8% to $13.80 in Monday's trading session.

From a technical perspective, Kirkland's ripped sharply higher on Monday off its new 52-week low of $12.47 share with strong upside volume flows. This stock recently gapped-down sharply from over $20 share to under $14 a share with heavy downside volume flows. Shares of Kirkland's have now started to spike higher right above its new 52-week low and off oversold territory, since its current relative strength index reading is 22.8. This high-volume spike off oversold levels is now quickly pushing this stock within range of triggering a major breakout trade above some key near-term overhead resistance levels. That trade will trigger if this stock manages to take out Monday's intraday high of $13.89 to its gap-down-day high of $15 a share with high volume.

Traders should now look for long-biased trades in Kirkland's as long as it's trending above its new 52-week low of $12.47 a share and then once it sustains a move or close above those breakout levels with volume that hits near or above 206,300 shares. If that breakout fires off soon, then this stock will set up to re-fill some of its previous gap-down-day zone that started just above $20 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.