This week's biggest % winners & losers (May 4 - 8, 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:GEVA (213.9 +116.3%),ALDR (37.23 +39.44%),BPMC (23.6 +27.36%),EXEL (3.43 +21.2%),SGEN (41.13 +20.86%),SRNE (12.35 +19.32%),RGEN (37.39 +18.74%),ARRY (7.48 +18.35%),ADRO (30.85 +18.24%),BLUE (163.72 +17.84%)
• Materials:BAK (10.03 +20.7%)
• Industrials:PCTY (32.75 +20.85%)
• Consumer Discretionary:NLS (21.82 +26.13%)
• Information Technology:SSNI (11.95 +21.94%),MGI (10.04 +20.96%),SREV (4.35 +20.5%),HUBS (46.75 +20.33%),ELNK (5.77 +20.21%),IMPV (53.98 +19.24%),
• Energy:GLNG (46.08 +27.65%)

This week's top 20 % losers

• Healthcare:FLDM (26.95 -28.53%),BIOS (3.63 -22.1%),RIGL (3.74 -17.07%),SCMP (15.45 -16.8%),SQNM (3.83 -16.56%),ANIP (52.93 -16.02%)
• Materials:GFI (3.71 -15.87%)
• Industrials:TNET (28.87 -19.83%),ENPH (10.26 -19.53%),KEYW (7.66 -17.37%)
• Consumer Discretionary:SKUL (8.27 -24.2%),NDLS (16.25 -21.76%)
• Information Technology:QLYS (36.98 -29.08%),ENOC (10.07 -21.7%)
• Financials:NSM (19.98 -22.29%),ONDK (15.68 -18.71%)
• Energy:CEQP (5.2 -19.25%),SD (1.6 -16.67%),LPI (13.34 -15.57%),IO (1.96 -15.52%)