This week's biggest % gainers/losers (January 26 - 30, 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:ABMD (51.74 +31.05%),RDUS (48.19 +24.68%),ZIOP (8.95 +23.62%),ICPT (201.03 +21.28%),IMGN (7.63 +20.54%),CSII (34.09 +16.91%)
• Materials:X (24.44 +18.76%)
• Consumer Discretionary:HAR (129.63 +27.64%),HZO (25.51 +25.67%),LRN (14.22 +23.22%)
• Information Technology:COMM (28.11 +29.82%),IIVI (17.19 +24.03%),FSL (32.09 +23.47%),SIMG (7.26 +23.47%),GIMO (18.41 +18.01%),SYNA (76.81 +15.3%)
• Energy:CRC (5.12 +26.11%),BBEP (6.56 +21.48%),ALDW (15.66 +17.66%),ARP(9.82 +15.53%)

This week's top 20 % losers

• Materials:ADES (10.61 -46.06%),SID (1.5 -21.47%),EGO (4.78 -15.7%)
• Industrials:HA (19.44 -27.03%)
• Consumer Discretionary:CNV (5.5 -27.73%)
• Information Technology:DSKY (10.78 -28.66%),UIS (21.93 -19.2%),SGI (9.43 -18%),DHX (8.27 -16.97%),RDWR (19.24 -16.31%)
• Financials:NBG (1.1 -34.52%),GDOT (15.25 -23.64%),EZPW (10.31 -15.7%)
• Energy:FRO (2.31 -24.76%),PBR.A (6.15 -19.19%),BXE (2.03 -18.8%),PBR (6.01 -17.1%)
• Consumer Staples:PPC (27.15 -23.41%)
• Telecommunication Services:PT (0.72 -31.14%),OIBR (1.97 -29.64%)