This week's biggest % winners & losers : Jan 2 - 5, 18 (wk 1)

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: CCXI (8.45 +42.02%), CHRS (12.35 +40.34%), TRVN (2.02 +26.25%), MNTA (17.55 +25.81%), ITCI (17.47 +20.65%), GNMK (5.03 +20.62%), ARNA (40.84 +20.22%), NTLA (22.71 +18.16%)
• Materials: UAN (4.04 +23.17%), SID (2.9 +18.37%), CMC (24.9 +16.79%)
• Consumer Discretionary: JMEI (3.62 +23.97%), FCAU (21.77 +22.03%)
• Information Technology: RENN (12.99 +25.02%), ANGI (12.76 +21.99%), SQ (41.14 +18.66%)
• Financials: OMF (34.53 +32.86%)
• Energy: PKD (1.25 +25%), EC (17.15 +17.22%)

This week's top 20 % losers

• Healthcare: RGNX (27.85 -16.24%), PEN (85.15 -9.51%)
• Industrials: BLDP (3.97 -9.98%)
• Consumer Discretionary: FRAN (5.95 -18.6%), CATO (13.11 -17.65%), BKS (5.6 -16.42%), LB (50.36 -16.37%), SPWH (5.77 -12.71%), ASNA (2.06 -12.34%), FINL (13.06 -10.12%), EXPR (9.15 -9.85%), BKE (21.65 -8.84%), BPI (7.6 -8.43%), FRED (3.71 -8.4%)
• Information Technology: SFUN (4.81 -13.8%), GTT (42.75 -8.95%)
• Consumer Staples: UNFI (44.88 -8.91%)
• Telecommunication Services: CBB (18.2 -12.71%)