This week's biggest % winners & losers (Jan 30 - Feb 3, 2017)

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:MDCO (45.96 +31.62%),MNTA (19.3 +27.39%),CARA (16.65 +19.96%),EPZM (12.1 +19.21%),TRVN (7.72 +17.15%),IDXX (142.02 +16.74%),ATRS (2.25 +15.98%),DPLO (15.26 +15.61%)
• Materials:RIC (9.3 +24.83%),OLN (30.83 +15.51%)
• Information Technology:CARB (20.4 +22.52%),BRKS (20.75 +17.43%),FTNT (37.72 +15.07%),DATA (55.28 +14.83%),AMD (12.24 +14.71%)
• Financials:ALLY (22.71 +15.22%)
• Energy:OKS (54.4 +23.08%),DHT (4.91 +14.99%)
• Consumer Staples:MJN (84.08 +18.02%)
• Telecommunication Services:TEO (22.7 +18.85%)

This week's top 20 % losers

• Healthcare:ACET (15.67 -19.81%)
• Materials:NGD (2.91 -26.52%),RYAM (13.78 -19.56%)
• Industrials:RRTS (6.96 -40.72%),SSW (7.52 -25.62%),PBI (13.18 -16.95%),AVH (7.26 -16.93%)
• Consumer Discretionary:TPX (43.49 -31.18%),UAA (20.7 -28.94%),UA (18.19 -28.72%),DECK (46.62 -20.58%),HBI (18.98 -17.05%),SFLY (44.09 -16.16%)
• Information Technology:CCRC (12.5 -34.28%),CSGS (40.39 -17.97%)
• Financials:TBBK (5.18 -29.23%),OPB (21.05 -22.75%)
• Energy:SDRL (1.85 -35.31%),CCJ (10.67 -17.8%)
• Consumer Staples:RAD (5.27 -23.95%)