This week's biggest % winners & losers : Oct. 23 - 27, 17 (wk 43)

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: ALGN (235.94 +17.45%), AIMT (29.88 +16.45%)
• Materials: VHI (4 +19.05%), KRA (48.47 +15.43%)
• Industrials: ECHO (23.85 +23.26%), FIX (42.45 +16.78%), FCN (42.4 +15.09%)
• Consumer Discretionary: IMAX (24.9 +16.9%), BWLD (124.5 +15.44%)
• Information Technology: TWTR (21.68 +21.32%), FSLR (57.67 +20.83%), NQ (4.07 +19.01%), STM (23.29 +16.92%), LN (41.92 +14.91%), GRUB (60.02 +14.67%), POWI (84.35 +14.37%)
• Financials: GCAP (7.35 +19.51%), TREE (266.4 +18.98%)
• Telecommunication Services: IRDM (12.7 +14.41%)
• Utilities: DYN (11.22 +21.17%)

This week's top 20 % losers

• Healthcare: ACHC (33.25 -25.2%), ENDP (5.88 -23.83%), LMAT (31.26 -19.87%), CELG (98.17 -19.09%), CHRS (11.1 -18.98%), OMER (15.46 -18.42%)
• Materials: EGO (1.29 -40.55%)
• Industrials: ESND (9.86 -24.15%), HA (33.9 -18.51%)
• Consumer Discretionary: ENT (2.56 -20.4%), TAL (28.01 -19.77%), EXPE (123.79 -18.99%), LEXEA (46.15 -18.33%)
• Information Technology: TRVG (7.57 -30.49%), EFII (29.75 -30.13%), UCTT (24.28 -26.38%), AXE (68.9 -21.7%), NOK (4.91 -19.24%)
• Energy: OII (19.04 -23.26%)
• Telecommunication Services: I (4.77 -25.47%)