This week's biggest % winners & losers : Feb. 4 - 8, 19 (wk 6)

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: MGNX (22.44 +96.33%), EOLS (26.71 +45.72%), OMCL (76.8 +19.18%)
• Materials: SBGL (4.3 +16.85%)
• Industrials: TGI (21.68 +20.38%), MLI (31.52 +18.23%)
• Consumer Discretionary: MAT (15.23 +24.63%), COLM (106.86 +18.97%), SKX (31.91 +18.67%), HBI (17.84 +17.45%), IRBT (104.17 +17.03%), OSTK (20.36 +16.01%)
• Information Technology: ULTI (332.41 +19.65%), FSCT (36.44 +18.08%), PAYC (175.96 +16.65%), MODN (16.78 +16.45%), APPN (36.78 +16.06%)
• Consumer Staples: COTY (9.33 +23.74%)

This week's top 20 % losers

• Healthcare: SLDB (7.42 -69.36%), SGMO (7.72 -38.14%), OPK (2.69 -25.07%), VCRA (32.33 -21.36%), OSUR (10.85 -17.11%)
• Industrials: PRLB (103.49 -16.87%)
• Consumer Discretionary: TTM (10.51 -18.53%)
• Information Technology: ARLO (3.66 -50.74%), CALX (7.4 -33.03%), CARB (23.85 -16.72%)
• Energy: SRCI (4.15 -17.82%), DNR (1.71 -17.39%), BTU (29.73 -16.89%), ECR (0.96 -15.94%), CHK (2.39 -15.85%), STNG (15.59 -15.64%)
• Consumer Staples: CENTA (28.02 -21.49%), CENT (31.25 -20.08%), SPB (46.91 -17.18%)