This week's biggest % gainers & losers (April 14 - April 17, 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: ZIGO (19.25 +31.13%), GRUB (35.95 +16.31%), WBMD (44.99 +15.06%), SPLK (65.84 +12.74%), RALY (13.86 +12.5%)
• Services: GLOG (28.04 +12.61%), GLNG (46.47 +12.6%)
• Healthcare: AKBA (26.09 +41.18%), RGEN (15.84 +15.79%), AGN (133.92 +14.82%)
• Financial: BOFI (85.3 +14.59%), AHL (44.45 +12.76%), IBKR (23.95 +12.6%)
• Basic Materials: GDP (24.36 +35.94%), TPLM (9.83 +21.81%), HK (5.34 +17.88%), MPO (5.91 +17.03%), CRK (26.4 +12.53%), PSXP (57.66 +12.22%), AXAS (5.15 +12.2%)

This week's top 20 % losers

• Technology: NQ (12.9 -19.32%), HIMX (9.12 -16.02%), OIBR (1.18 -15.11%)
• Services: CNSI (26.41 -24.43%), PBY (10.26 -15.14%)
• Healthcare: RARE (42.56 -26.54%), RTRX (14.5 -20.55%), ARWR (12.77 -19.53%), INO (2.52 -16%), DYAX (6.73 -15.24%), MGNX (20.02 -14.77%), NWBO (5.88 -14.16%), INSM (13.41 -14.04%), GWPH (46.2 -13.81%), ECYT (18.15 -13.2%)
• Financial: MGI (14.81 -17.58%), NBG (4.48 -17.19%)
• Basic Materials: CAK (0.7 -17.35%), PVG (5.48 -16.21%), ANV (3.63 -13.57%)