This week's biggest gainers & losers (May 27 - 30, 2014)

 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: OPEN (104.67 +49.75%), SCTY(69 +34.16%),FIO (11.69 +31.26%),TWTC(40.83 +26.57%),BNFT (46.33 +25.27%),YGE(4.01 +25.25%)
• Services: EXPR (16.54 +22.73%),LE (34.62 +21.03%), GLOG (30.72 +20.73%),LAD (92.35 +20.45%)
• Industrial Goods: BLDP (4.27 +20.36%)
• Healthcare:KPTI (42.37 +74.91%),INSM (18.74 +49.8%),BLUE (40.71 +45.59%),COV (90.11 +26.65%),RARE (47.49 +20.61%)
• Basic Materials:TRGP (138.09 +26.49%),KWK (2.95 +24.79%),WMB (57.66 +23.65%),FSM(5.29 +22.71%)

This week's top 20 % losers

• Utilities:TGS (3 -10%)
• Technology:FNSR (19.91 -22.26%),CMGE (14.33 -22.18%),AFOP (18.47 -11.49%),UTEK(22.47 -10.43%),PERI (10.02 -9.45%)
• Services:DWA (24.47 -10.9%),DL (15.28 -10.53%),WBAI (33.74 -10.19%),PIR (15.18 -8.96%)
• Industrial Goods:PGEM (10.41 -9.94%)
• Healthcare:VRTX (64.96 -12.07%),UTHR (87.46 -10.65%),VSAR (29.75 -9.5%),TGTX (8.58 -9.07%)
• Financial:TSLX (18.11 -16.98%),QIWI (39.96 -10.34%)
• Consumer Goods:CXDC (8.54 -11.08%)
• Basic Materials:MTL (2.18 -12.72%),PZE (6.64 -8.85%)