This week's biggest % gainers/losers (June 17 - 21)

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

• Technology: AMCC (9.73 +17.42%), CLWR (5.08 +12.98%), RKUS (12.11 +12.55%), GRPN (7.95 +9.91%)
• Services: RH (71.28 +20.54%), GTN (7.16 +12.05%), NGVC (32.78 +12.03%), NWY (6.22 +10.99%), NXST (33.82 +10.14%), BLOX (29.2 +9.21%)
• Industrial Goods: TREX (53.25 +10.78%), PRLB (60 +10.19%)
• Healthcare: KERX (7.66 +13.34%), NKTR (10.99 +12.3%), STAA (10.24 +11.47%), RPRX (19.37 +11.05%), ELN (13.98 +10.55%)
• Financial: ALEX (39.84 +12.24%), FXCM (15.83 +9.31%)

This week's top 20 % losers

• Technology: EBIX (9.52 -43.68%), VIPS (26.49 -21.22%), NIHD (6.26 -18.08%)
• Services: MATX (24.81 -29.23%), GOL (3.31 -20.39%), MYGN (25.75 -18.21%)
• Industrial Goods: GFA (2.49 -22.19%)
• Healthcare: TSRO (32.22 -20.53%), GNMK (9.87 -20.28%)
• Financial: NOAH (9.93 -18.72%), NBG (4.36 -17.05%)
• Basic Materials: NSU (2.92 -19.94%), RBY (1.39 -19.77%), SA (10.13 -18.77%), EXK (3.54 -18.6%), EGO (6.24 -17.89%), AUY (9.49 -17.65%), FNV (33.12 -17.54%), ANV (6.62 -17.44%), RGLD (46.19 -16.79%)