This week's biggest % winners & losers : Jan 14 - 18, 19 (wk 3)

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: ALDR (13.41 +23.82%), FPRX (11.19 +16.56%)
• Materials: VHI (3.45 +48.07%), MERC (14.77 +27.33%)
• Consumer Discretionary: GTX (15.81 +19.32%), CWH (16.03 +18.57%), BOOT (22.85 +17.84%), VC (76.33 +16.14%), LE (17.35 +15.51%)
• Information Technology: FDC (22.95 +32.81%), ATTU (24.69 +21.09%), COUP (76.66 +17.96%), DOMO (26.59 +17.03%)
• Financials: OZK (32.06 +21.58%), JT (5.77 +15.86%)
• Energy: ROAN (11.15 +22.39%), HCLP (4.6 +16.75%), RDC (12.12 +15.65%)

This week's top 20 % losers

• Healthcare: IMMU (13.31 -25.68%), LXRX (5.96 -20.95%), ADAP (4.86 -15.33%), MGNX (12.31 -13.92%), NOVN (1.38 -13.08%)
• Materials: IAG (2.83 -22.25%), AG (5.15 -13.88%), EGO (2.66 -13.07%)
• Industrials: MAXR (5.04 -13.55%)
• Consumer Discretionary: NLS (7.02 -37.04%), SIG (25.41 -28.52%), TLRD (12 -18.26%), TSLA (302.26 -12.96%)
• Information Technology: CASA (11.2 -18.6%), QTNA (13.36 -16.92%)
• Financials: DFIN (13.57 -12.96%)
• Utilities: PCG (7.23 -58.9%)