This week's biggest % winners & losers : May 15 - 19, 17 (week 20)

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: PTHN (34.61 +33.12%), ALNY (71.6 +26.12%), LJPC (33.96 +19.87%), ATHN (130.46 +19.55%), PBYI (37.8 +17.21%)
• Industrials: DXPE (38.45 +17.23%), TGI (22.95 +15.91%)
• Consumer Discretionary: RRGB (73.05 +26.71%), ENT (3.29 +18.35%), ETSY (13.3 +18.12%), LL (29.13 +15.69%),
• Information Technology: CYOU (38.54 +24%), SINA (101.96 +22.11%), RENN (7.34 +19.35%), SOHU (46.22 +16.92%), ATHM (42.9 +15.7%), MTSI (56.02 +15.39%)
• Telecommunication Services: NIHD (0.53 +43.2%), FTR (1.45 +19.83%)
• Utilities: DYN (9.12 +33.72%)

This week's top 20 % losers

• Healthcare: ELGX (4.44 -36.55%), ARDX (6.05 -18.79%), EGRX (79.59 -16.44%), NLNK (14.81 -14.98%)
• Materials: FRTA (10.56 -46.45%)
• Industrials: GOL (12.25 -24.8%), KRNT (18.53 -15.8%), HRI (35.6 -15.36%)
• Consumer Discretionary: ASNA (2.05 -31.44%), FL (58.72 -21.58%), AEO (10.85 -19.81%), SHLD (7.88 -17.02%), PIR (5.26 -15.16%), DKS (40.8 -15.11%)
• Financials: BBD (8.54 -16.52%), ITUB (10.88 -15.13%), BSBR (7.72 -14.88%)
• Energy: TOO (3.37 -24.78%)
• Utilities: EBR (4.01 -28.26%), CIG (2.23 -22.3%)