This week's biggest % winners & losers : Feb 26 - March 2, 18 (wk 9)

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: MGNX (28.94 +23.36%), VEEV (73.77 +19.85%), ONCE (65.67 +19.36%), ACHN (3.51 +18.78%), NKTR (102.87 +14.81%), SGYP (2.17 +14.21%)
• Materials: TAHO (4.91 +23.06%)
• Industrials: STB (7.5 +19.43%)
• Consumer Discretionary: DDS (87.97 +23.33%), ETSY (25.71 +22.02%)
• Information Technology: UBNT (67.4 +18.25%), HLIT (3.45 +16.95%)
• Financials: PHH (10.62 +22.35%), NGHC (23.55 +16.87%)
• Energy: SWN (4.47 +19.52%), TUSK (28.42 +16.48%)
• Telecommunication Services: NIHD (1.28 +24.27%), I (4.76 +20.51%)

This week's top 20 % losers

• Healthcare: AKRX (18.97 -37.02%), PTLA (34.25 -25.25%), ACAD (23.68 -24.87%), PDCO (25.01 -22.47%), VRX (14.88 -20.34%), EGRX (53.63 -19.79%), EXEL (24.08 -18.4%), RDUS (32.92 -18.02%)
• Materials: ALB (95.02 -19.98%), SQM (47.85 -18.05%)
• Industrials: BW (5.53 -20.09%)
• Consumer Discretionary: NTRI (31.45 -24.31%), ODP (2.51 -18.77%)
• Information Technology: BOX (18.82 -19.3%)
• Energy: CRC (14.98 -25.95%), HK (5.35 -23.46%), CRZO (14.9 -19.2%)
• Consumer Staples: MNST (54.16 -17.79%)
• Telecommunication Services: FTR (7.00 -23.08%)