This week's biggest % winners & losers (April 13 - 17, 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:GWPH (114 +24.84%),SNTA (2.93 +22.59%),ZIOP(11.92 +17.62%),SAGE (59.92 +16.55%)
• Materials:RBY (1.13 +21.64%),KOP (22.97 +16.84%),AUQ (3.49 +16.72%)
• Industrials:BLDR (12.99 +88.26%)
• Consumer Discretionary:NFLX (571.55 +25.73%),JMEI (22.01 +25.13%),SHAK(61.67 +23.86%),SWHC (15.21 +18.09%)
• Information Technology:WUBA (70.5 +30.24%)
• Energy:CRR (38.98 +22.04%),PWE (2.44 +22%),NADL (1.62 +20.9%),CLNE (7.05 +18.09%),BXE (3.14 +18.05%),GTE (3.52 +17.33%),EVEP (16.42 +15.72%)

This week's top 20 % losers

• Healthcare:PFNX (15.12 -20.34%),PTX (8.35 -17.24%),HTWR (80.41 -14.88%),NVDQ (13.75 -11.69%),OTIC (31.86 -10.91%),HRTX (13.3 -10.56%),ARWR(7.08 -10.49%),AMRN (2.33 -10.04%)
• Materials:TC (1.29 -10.42%)
• Industrials:ZNH (46.53 -11.51%)
• Consumer Discretionary:CORE (55.62 -13.89%),MPEL (22.03 -10.63%),PBY (8.6 -10.51%)
• Information Technology:SMI (5.2 -13.76%),COUP (12.41 -11.36%),NOW (73.29 -10.99%)
• Financials:OCN (7.7 -19.37%),ASPS (17.39 -15.29%)
• Energy:YZC (10.3 -11.66%)
• Consumer Staples:FWM (6.02 -12.88%)