This week's biggest % winners & losers : July 30 - Aug 3, 18 (wk 31)

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: DXCM (123.33 +29.34%), MEDP (59.37 +24.41%), TBPH (28.5 +23%), GNMK (7.31 +22.65%), HMSY (28.9 +22.25%), INOV (12.2 +21.39%), MOH (126.43 +20.79%)
• Materials: RFP (12.3 +20%)
• Industrials: SSD (73.74 +22.78%), DNOW (17.31 +22.25%), AJRD (34.21 +21.87%), TREX (78.52 +21.38%)
• Consumer Discretionary: SODA (116.36 +31.44%), FOXF (61.45 +25.03%), GIL (31.16 +20.45%)
• Information Technology: PAYC (132.82 +22.97%), CATM (30.2 +21.24%), UIS (15.45 +20.7%)

This week's top 20 % losers

• Healthcare: CCRN (8.48 -27.71%), EPZM (9.55 -23.29%), TSRO (26.97 -23.21%), CPSI (26.4 -22.01%), AXGN (38.45 -21.93%)
• Industrials: TWI (7.12 -29.85%), INWK (6.1 -24.6%)
• Consumer Discretionary: SGMS (35.3 -25.92%), RRGB (37.65 -21.48%)
• Information Technology: DBD (7 -35.48%), IPGP (170.46 -27.65%), SNCR (4.06 -24.81%), CRTO (26.41 -24.28%)