This week's biggest % winners & losers: July 10 - 14, 17 (wk 28)

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: ARNA (24.28 +26.13%), TRVN (2.78 +23.01%), FOLD (12.84 +22.99%), HRTX (15.45 +20.23%)
• Materials: NAK (1.49 +18.25%)
• Industrials: HTZ (15.22 +30.31%), GNK (10.91 +20.42%)
• Consumer Discretionary: MYCC (17.1 +30.53%), LILAK (26.03 +19.62%), LILA(26.11 +17.09%)
• Information Technology: AAOI (84.2 +25.11%), BZUN (29.5 +17.44%), SPWR(10.12, +15.79%),  KEM (16.07 +15.78%)
• Energy: HK (6.78 +61.43%), PES (2.5 +35.14%), NVGS (10.75 +25.73%), FMSA(3.74 +16.15%), REN (32.7 +16%)
• Utilities: NRG (23.24 +43.1%)

This week's top 20 % losers

• Healthcare: RVNC (23.45 -14.1%), TBPH (37.11 -12.81%), GEN (1.5 -9.64%), COLL (12.23 -8.94%), LMAT (29.14 -8.91%)
• Industrials: MSM (73.66 -17.27%)
• Consumer Discretionary: ANF (8.89 -26.89%), BNED (7.76 -24.14%), HOV (2.45 -14.93%), BGFV (11.5 -9.09%), FRGI (18.25 -7.83%)
• Information Technology: ATEN (6.92 -14.46%), CYBR (42.68 -13.43%), HLIT (4.68 -12.62%), COMM (35.13 -7.92%), ACIA (39 -7.74%)
• Consumer Staples: SFS (7.75 -8.82%)
• Telecommunication Services: CNSL (17.96 -13.28%), CBB (17.35 -10.34%)