This week's biggest % winners & losers (March 9 - 13, 2015)

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:AMRN (2.9 +62.92%),LBIO (13.12 +45.78%),AMPE (7.98 +35.71%),RGEN (31.31 +24.89%),GERN (4.34 +24%),EGRX (46.09 +22.48%),AAVL (43.24 +20.24%),SUPN (11.77 +20.22%),HPTX (35.12 +19.33%),ANAC (55.66 +17.97%)
• Materials:RTI (37.79 +38.53%),PLM (1.33 +19.82%)
• Consumer Discretionary:PNK (34.39 +25.42%),TWOU (21.46 +20.97%),EXPR (16.24 +17.43%)
• Information Technology:GCA (8.33 +17.66%)
• Financials:ITG (27.91 +24.04%),ONDK (19.41 +19.37%)
• Energy:TGS (5.48 +26.56%),WLL (40 +17.54%)

This week's top 20 % losers

• Healthcare:ACRX (4.06 -53.6%),CUR (2.56 -32.45%),CTIC (1.97 -25.66%)
• Materials:BAK (6.74 -21.45%),CLF (4.94 -21.21%)
• Industrials:NNBR (20.95 -19.79%),CVEO (2.92 -19.78%),BLT (13.41 -19.12%)
• Consumer Discretionary:ARO (3.06 -24.26%),VRA (15.25 -20.03%),WBAI (11.6 -20%),ARCO(4.23 -18.5%)
• Information Technology:BITA (47.6 -28.96%),CMTL (27.54 -19%)
• Energy:EXXI (3.05 -24.69%),BAS (5.91 -22.85%),CLD (5.88 -19.34%),PWE (1.42 -18.86%),PES (4.63 -18.77%),XCO (1.54 -18.52%)