This week's biggest % winners & losers : May 16 - 20, 22 (wk 20)

The following are this week's top percentage gainers and losers, categorized by sectors (over $300 mln market cap and 100K average daily volume).

This week's top % gainers

• Healthcare: SIGA (12.33 +65.28%), ARRY (9.07 +28.04%), EBS (35.17 +22.37%), CCXI (22.8 +18.94%), RCKT (10.67 +17.38%), RETA (28.78 +17.26%), NTRA (39.76 +16.26%), CBAY (2.09 +16.11%), ADAP (1.63 +15.6%)
• Industrials: GFF (30.11 +23.84%)
• Information Technology: BL (71.72 +22.49%), CSIQ (29.33 +20.48%), QTWO (51.17 +15.77%), BLKB (62.66 +15.33%), MANT (94.51 +15.29%)
• Financials: AMBC (9.92 +15.96%)
• Energy: TDW (25.11 +18%) 

This week's top % losers

• Healthcare: TRHC (2.3 -35.35%), RUBY (1.01 -22.31%)
• Industrials: TGI (13.86 -32.85%)
• Consumer Discretionary: TGT (155.03 -29.45%), DDS (248.55 -23.22%), LOVE (30.16 -22.51%), ROST (71.84 -21.97%), EAT (27.21 -20.39%), DLTR (127.47 -20.03%), FIVE (116.76 -20.02%), KSS (38.8 -19.91%), DG (187.25 -19.4%), GRPN (12.01 -18.63%), CONN (11.97 -18.16%), BOOT (74.16 -18.06%)
• Information Technology: AVYA (4.77 -24.64%)