Gainers

• Hepion Pharmaceuticals, Inc. HEPA shares surged 37.5% to $6.85 during Tuesday's after-market session. The most recent rating by Brookline Capital, on November 22, is at Buy, with a price target of $12.00.
• Conatus Pharmaceuticals, Inc. CNAT stock moved upwards by 25.1% to $0.51.
• Avinger, Inc. AVGR shares surged 11.9% to $0.97.
• Accuray, Inc. ARAY stock moved upwards by 11.4% to $4.20. According to the most recent rating by BTIG Research, on January 21, the current rating is at Buy.
• Vaxart, Inc. VXRT stock moved upwards by 10.2% to $0.97.
• AVEO Pharmaceuticals, Inc. AVEO shares increased by 7.1% to $0.57.
• Allied Healthcare Prods, Inc. AHPI stock surged 6.8% to $3.16.
• Heat Biologics, Inc. HTBX stock surged 5.8% to $0.25.
• ContraFect, Inc. CFRX shares moved upwards by 5.5% to $0.97.
• Inovio Pharmaceuticals, Inc. INO stock moved upwards by 5.3% to $4.59. The most recent rating by PiperJaffray, on January 03, is at Overweight, with a price target of $8.00.
• Avalon Globocare, Inc. AVCO stock rose 5.2% to $1.62.
• Trevena, Inc. TRVN shares rose 5.0% to $0.97.
• Alector, Inc. ALEC stock rose 4.9% to $25.80. The most recent rating by BTIG, on November 21, is at Buy, with a price target of $28.00.
• CHF Solutions, Inc. CHFS shares moved upwards by 4.2% to $0.45.
• Sunesis Pharmaceuticals, Inc. SNSS stock increased by 3.7% to $0.53.
• Collegium Pharmaceutical, Inc. COLL stock increased by 3.6% to $21.60. The most recent rating by Needham, on January 08, is at Hold, with a price target of $36.00.
• Adamis Pharmaceuticals, Inc. ADMP shares increased by 3.6% to $0.71. According to the most recent rating by Raymond James, on November 26, the current rating is at Market Perform.
• Miragen Therapeutics, Inc. MGEN shares surged 3.2% to $1.63. The most recent rating by Baird, on December 12, is at Neutral, with a price target of $1.00.
• Owens & Minor, Inc. OMI stock increased by 3.2% to $6.86. The most recent rating by Baird, on January 21, is at Outperform, with a price target of $9.00.
• SELLAS Life Sciences, Inc. SLS shares surged 3.1% to $2.98.
• Adverum Biotechnologies, Inc. ADVM stock surged 3.1% to $11.00. The most recent rating by PiperJaffray, on January 13, is at Overweight, with a price target of $20.00.
• Sangamo Therapeutics, Inc. SGMO shares rose 2.9% to $7.47.
• Viking Therapeutics, Inc. VKTX stock surged 2.8% to $6.70.
• Citius Pharmaceuticals, Inc. CTXR stock increased by 2.7% to $1.13.
• AMAG Pharmaceuticals, Inc. AMAG stock surged 2.4% to $9.87. The most recent rating by Barclays, on November 04, is at Overweight, with a price target of $14.00.

Losers

• Biohaven Pharmaceutical, Inc. BHVN shares fell 9.7% to $50.97 during Tuesday's after-market session. The most recent rating by Wedbush, on December 12, is at Outperform, with a price target of $75.00.
• Cocrystal Pharma, Inc. COCP stock plummeted 7.7% to $0.72.
• NantHealth, Inc. NH shares decreased by 6.3% to $1.92.
• InVivo Therapeutics Hldg, Inc. NVIV stock plummeted 6.0% to $0.24.
• Cerus, Inc. CERS stock declined 5.8% to $3.91. According to the most recent rating by BTIG Research, on November 13, the current rating is at Buy.
• Allakos, Inc. ALLK stock fell 5.0% to $73.58.
• Capricor Therapeutics, Inc. CAPR shares plummeted 4.3% to $1.55.
• Neurotrope, Inc. NTRP stock declined 4.3% to $1.12.
• Marinus Pharmaceuticals, Inc. MRNS stock declined 3.8% to $2.05. The most recent rating by H.C. Wainwright, on January 10, is at Buy, with a price target of $6.00.
• Midatech Pharma, Inc. MTP stock declined 3.4% to $0.71.
• Amphastar Pharmaceuticals, Inc. AMPH shares declined 3.3% to $19.07.
• Vir Biotechnology, Inc. VIR shares declined 3.3% to $20.61. The most recent rating by Baird, on November 14, is at Neutral, with a price target of $17.00.
• Outlook Therapeutics, Inc. OTLK shares declined 3.1% to $0.91.
• Ocugen, Inc. OCGN stock fell 3.0% to $0.61. According to the most recent rating by H.C. Wainwright, on December 20, the current rating is at Buy.
• Cleveland BioLabs, Inc. CBLI stock plummeted 2.5% to $2.72.
• CytoSorbents, Inc. CTSO stock plummeted 2.3% to $4.60.
• Guardion Health Sciences, Inc. GHSI shares plummeted 2.3% to $0.31.
• OpGen, Inc. OPGN stock plummeted 2.0% to $1.47.