Mattress FirmMattress Firm ( MFRM) is a specialty retailer of mattresses and related products and accessories in the U.S. This stock is trading up 4.7% at $27.70 in recent trading. Today's Volume: 506,000 Average Volume: 329,202 Volume % Change: 232% Shares of MFRM are moving higher today after industry data showed improved shipments in January. From a technical perspective, MFRM is bouncing strongly to the upside here right off its 50-day moving average of $26.47 with above-average volume. This move is quickly pushing shares of MFRM within range of triggering a near-term breakout trade. That trade will hit if MFRM manages to take out some near-term overhead resistance levels at its 200-day moving average of $29.27 and then above more resistance at $29.80 to $30.48 with high volume. Traders should now look for long-biased trades in MFRM as long as it's trending above its 50-day at $26.47 and then once it sustains a move or close above those breakout levels with volume that hits near or above 329,202 shares. If that breakout triggers soon, then MFRM will set up to re-test or possibly take out its next major overhead resistance levels at $33.04 to $33.36. Mako SurgicalMako Surgical ( MAKO) is a medical device company that markets its advanced robotic arm solution and orthopedic implants for orthopedic procedures. This stock is trading up 8.4% to $11.93 in recent trading. Today's Volume: 3.25 million Average Volume: 1.17 million Volume % Change: 286% Shares of Mako are skyrocketing today after William Blair said it's convinced that the company's 2013 procedure guidance is solid and is mainly in line with expectations. The firm still thinks that Mako has developed the best robotically assisted orthopedic system available and views the stock valuation as reasonable at current levels. From a technical perspective, MAKO is spiking higher here back above its 50-day moving average of $11.80 with heavy upside volume. This move is quickly pushing shares of MAKO within range of triggering a major breakout trade. That trade will hit if MAKO manages to take out some near-term overhead resistance levels at $12.54 to $13.28 with high volume.