Proto Labs ( PRLB) This company is a manufacturer of custom parts for prototyping and short-run production. This stock is trading up 3.4% at $35.23 in recent trading. Today's Volume: 284,000 Average Volume: 213,702 Volume % Change: 115% From a technical perspective, PRLB is bouncing higher here right above its 50-day moving average of $32.71 with above-average volume. This move is quickly pushing PRLB within range of triggering a major breakout trade. That trade will hit once PRLB manages to take out some key overhead resistance levels at $36.55 to $37.29 with high volume. Traders should now look for long-biased trades in PRLB as long as it's trending above some near-term overhead resistance at $34.71, and then once it sustains a move or close above those breakout levels with volume that hits near or above 213,702 shares. If that breakout triggers soon, then PRLB will set up to re-test or possibly take out its next major overhead resistance levels at $39 to $41.10. To see more stocks rising on unusual volume, check out the Stocks Rising On Unusual Volume portfolio on Stockpickr. -- Written by Roberto Pedone in Winderemere, Fla.