This week's biggest % gainers/losers (April 29 - May 3, 2013)

The following are this week's top 20 percentage gainers and top 20 percentage losers, categorized by sectors (over $300 mln market cap and 100K average daily volume).

This week's top 20 % gainers

• Technology: AMD (3.6 +27.24%), YELP (31.13 +26.75%), SPWR (14.9 +25.74%), MDSO (67.59 +24.79%), LOGM (22.1 +22.06%), RATE (15.9 +18.1%), TSL (4.97 +18.04%)
• Services: BGFV (19.46 +23.45%), MGAM (24.64 +21.5%), RPXC (15.27 +18.33%), MDCA (17.74 +17.88%)
• Healthcare: TXMD (2.94 +27.27%), STAA (8.56 +26.77%), TSRO (29.62 +18.81%), QCOR (34.26 +17.66%)
• Consumer Goods: MTOR (6.01 +26.06%)
• Basic Materials: NR (10.87 +24.42%), OIS (93.67 +22.98%), CENX (8.68 +17.96%), REGI (11.83 +16.77%)

This week's top 20 % losers

• Technology: NTE (8.57 -31.99%), GWAY (12.34 -22.93%), NIHD (7.2 -21.1%), CRAY (16.6 -18%), ACCL (8.37 -16.22%), NUAN (19.65 -14.73%)
• Services: DXPE (57.34 -16.96%), KFRC (13.19 -13.65%), CHH (39.79 -12.75%), KKD (12.65 -12.75%)
• Industrial Goods: RBC (65.76 -15.39%)
• Healthcare: LXRX (2.01 -13.1%), ASTX (5.8 -12.78%)
• Financial: MBI (9.8 -14.74%)
• Consumer Goods: COT (9.03 -16.16%)
• Basic Materials: NBL (113.06 -72.68%), KEG (6.24 -14.39%), ANV (10 -14.36%), HK (6.26 -14.09%), PBF (28.53 -13.42%)