This week's biggest % winners & losers : Jan 22 - 26, 18 (wk 4)

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 (33.60 +35.32%), NTLA (24.71 +27.17%), JUNO (85.72 +26.41%), ATRA (37.25 +26.27%), ABAX (75.71 +23.79%), KPTI (12.28 +22.68%), FGEN (58.35 +21.94%), GNMK (5.87 +21.53%), SPPI (23.07 +21.23%), CERS (4.99 +21.12%), MDXG (17.21 +21.11%), ACAD (32.13 +19.35%), VNDA (17.25 +18.97%), EDIT (35.96 +18.29%), ABBV (123.21 +17.75%)
• Industrials: GWW (285.26 +24%)
• Consumer Discretionary: NFLX (274.60 +24.56%), HZO (23.8 +22.05%)
• Information Technology: TRVG (8.98 +19.89%)
• Financials: VR (67.45 +44.37%)

This week's top 20 % losers

• Healthcare: CFMS (1.55 -35.42%), PBYI (68.70 -25%), BCRX (4.65 -16.82%)
• Materials: PVG (7.63 -30.38%), RYI (10.85 -13.89%)
• Industrials: BLDP (3.01 -23.99%), UAL (66.56 -12.99%)
• Consumer Discretionary: SHLD (2.54 -30.03%), HZN (9.25 -28.96%), NWL (25.33 -18.87%)
• Information Technology: SANM (27.90 -21.3%), CCRC (17.64 -17.57%), OLED (170.45 -16.3%), COHR (268.91 -15.53%), HIMX (8.27 -15.53%), IIVI (45.00 -15.01%)
• Energy: TK (8.75 -16.51%), RES (20.76 -15.78%), BAS (20.23 -13.51%), CLNE (1.74 -12.12%)