This week's biggest % winners & losers : May 2 - 6, 16 (wk 18)

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:TRXC (1.95 +30%),SRPT (17.7 +24.74%),GKOS (23.03 +22.24%)
• Materials:RYAM (14.4 +40.49%)
• Industrials:QUAD (16.1 +28.29%),TPC (19.44 +22.88%),NSP (64.71 +22.63%),AAWW (46.79 +17.15%)
• Consumer Discretionary:NTRI (26.14 +18.71%),IBP (31.49 +18.47%),CCO (5.88 +15.07%),APOL (8.95 +14.74%)
• Information Technology:OPWR (10.33 +30.76%),FARO (34.26 +17.98%),IAC (53.78 +16.06%),CGNX (40.61 +14.3%)
• Energy:EPE (6.03 +22.81%),ATW (11.52 +19.25%)
• Consumer Staples:CENT (18.95 +16.47%),CENTA (18.6 +14.18%)

This week's top 20 % losers

• Healthcare:ENDP (16.17 -40.11%),KTWO (11.53 -29.09%),RLYP (13.51 -25.36%),AMAG(19.85 -25.15%),PBYI (23.49 -23.46%),RMTI (7.09 -23.35%)
• Materials:CLF (3.51 -33.4%)
• Industrials:RRTS (8.05 -31.9%), SCTY (21.84 -27.97%)
• Information Technology:SQ (10.22 -31.36%),IMPV (33.79 -27.3%),RUBI (14.15 -26.95%),DDD(13.16 -25.61%),FEYE (12.95 -25.39%),FIT (13.62 -25.37%)
• Financials:ONDK (5.12 -40.67%)
• Energy:CHK (4.59 -33.19%),WFT (5.67 -30.26%),AROC (7.34 -25.48%)
• Utilities:VSLR (2.46 -26.35%)