This week's biggest % winners & losers (May 11 - 15, 2015)

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

• Healthcare:RVNC (26.39 +29.62%),RARE (79.34 +25.94%),RDUS(46.23 +21.69%),BPMC (28.56 +21.02%),OPK (16.92 +19.75%),OCUL (26.27 +19.19%),NVRO (53.41 +17.75%),SPPI(6.68 +17.61%)
• Materials:SSRI (6.55 +22.32%)
• Industrials:PLL (123.7 +24.3%),ASGN (38.7 +17.84%)
• Consumer Discretionary:RENT (66.33 +30.73%),CONN (39.99 +21.55%),BONA(10.53 +18.71%)
• Information Technology:CMCM (30.53 +35.15%),QIWI (34.66 +21.23%),SEDG (37.35 +20.1%)
• Energy:ROSE (24.18 +25.1%)
• Consumer Staples:CALM (54.95 +27.79%)
• Telecommunication Services:VIP (6.35 +17.38%)

This week's top 20 % losers

• Healthcare:OREX (5.01 -27.07%),NLNK (39.69 -23.2%),RDNT (6.86 -21.96%),FGEN(20.38 -15.05%),RMD (56.2 -14.36%),FMI (37.09 -14.3%),NVCN (6.76 -14.1%),SGMO(11.51 -13.78%),KPTI (24.81 -13.67%),DEPO (20.54 -13.66%)
• Industrials:BBSI (38.05 -18.05%)
• Consumer Discretionary:KNDI (9.13 -27.42%),MMYT (17.93 -18.8%),APEI (23.26 -16.3%),ARCO (5.39 -14.85%)
• Information Technology:RAX (44.37 -17.83%)
• Energy:SD (1.18 -26.25%),MCF (16.52 -20.88%),JONE (9.85 -12.99%),MDR (4.61 -12.52%)