This week's biggest % winners & losers: Apr 12 - 16, 21 (wk 15)

The following are this week's top percentage gainers and losers, categorized by sectors (over $300 mln market cap and 100K average daily volume).

This week's top % gainers

• Healthcare: NVCR (192.5 +45.73%), NVAX (227.35 +26.49%), MRNA (170.81 +21.21%), EVLO (11.56 +15.14%), FLXN (9.41 +15.83%)
• Materials: RFP (14.79 +22.43%), BAK (17.81 +16.1%), AA (35.63 +13.62%), CENX (16.92 +13.33%)
• Industrials: GFN (18.95 +61.97%)
• Consumer Discretionary: CAL (23.85 +11.71%)
• Information Technology: NUAN (53.34 +17.03%), LSCC (57.92 +15.42%)
• Financials: RILY (72.14 +17.47%), GHL (18.91 +14.33%)
• Energy: BTU (3.87 +16.57%), ARCH (48.83 +13.9%)

This week's top % losers

• Healthcare: IRTC (90.94 -31.5%), SENS (1.89 -19.23%), EOLS (10.97 -19.22%), CYH (10.07 -15.52%), AMRN (5.02 -15.35%), ODT (3.31 -14.03%)
• Consumer Discretionary: TOUR (2.85 -18.34%), MOGU (1.61 -18.28%), EXPR (3.17 -16.36%), BBBY (25.52 -15.02%)
• Information Technology: HIMX (12.4 -19.32%), CTK (2.06 -18.9%)
• Financials: QD (1.88 -13.76%)
• Energy: TELL (1.72 -16.5%), EXTN (3.12 -15.9%)
• Consumer Staples: NBEV (2.19 -15.44%)