30 Stocks Moving In Tuesday's Mid-Day Session

Gainers

• Camber Energy (NYSE: CEI) shares jumped 97.5% to $4.01 after falling 30.95% on Monday.
• Acacia Communications, Inc. (NASDAQ: ACIA) rose 35.4% to $65.07 after Cisco Systems, Inc. (NASDAQ: CSCO) announced plans to acquire the company for $70 per share in cash, or for approximately $2.6 billion on a fully diluted basis, net of cash and marketable securities.
• Xenetic Biosciences, Inc. (NASDAQ: XBIO) gained 20.8% to $12.32.
• Ameri Holdings Inc (NASDAQ: AMRH) rose 18.3% to $0.4177 after the company announced it has partnered with Inpedio to bring Cybersecurity to SAP landscape.
• Electrameccanica Vehicles Corp (NASDAQ: SOLO) surged 15.7% to $2.6850 after Roth Capital initiated coverage on the company's stock with a Buy rating.
• NeoPhotonics Corporation (NYSE: NPTN) rose 10.2% to $4.7150.
• Luokung Technology Corp. (NASDAQ: LKCO) gained 9.8% to $8.10.
• Yuma Energy, Inc. (NYSE: YUMA) surged 9.5% to $2.9884.
• Applied Optoelectronics, Inc. (NASDAQ: AAOI) rose 9.4% to $10.49.
• Altimmune, Inc. (NASDAQ: ALT) rose 9.3% to $2.71 after the company announced to acquire Spitfire Pharma, which will add a NASH drug candidate to the company's portfolio.
• Perion Network Ltd. (NASDAQ: PERI) climbed 9.1% to $3.1740.
• CytomX Therapeutics, Inc. (NASDAQ: CTMX) gained 8.8% to $12.02 after the company reported second target selection and program initiation with AbbVie under ongoing, multi-program strategic oncology collaboration.
• CareDx, Inc (NASDAQ: CDNA) rose 8% to $38.22.
• ReWalk Robotics Ltd. (NASDAQ: RWLK) surged 7.6% to $4.80.
• Aclaris Therapeutics, Inc. (NASDAQ: ACRS) gained 7.4% to $2.31 on the back of theannouncement of a patent win. The U.S. Patent and Trademark Office has granted the company a patent —No. 10,335,391 — covering the methods to treat facial erythema associated with rosacea using Rhofade, or 1% oxymetazoline hydrochloride composition, Aclaris said Tuesday.
• Square Inc (NYSE: SQ) gained 4.9% to $77.02 after Raymond James upgraded the stock from Underperform to Market Perform.
• AzurRx BioPharma Inc (NASDAQ: AZRX) rose 4% to $1.30 after the company announced it initiated the Phase 2 clinical study for MS1819-SD in combination with standard PERT.

Check out these big penny stock gainers and losers

Losers

• FuelCell Energy Inc (NASDAQ: FCEL) shares tumbled 29.6% to $0.5279 on seemingly no news. The movement could potentially be a sell-off following a rise of over 300% last week.
• Soliton, Inc. (NASDAQ: SOLY) fell 11.7% to $16.33 after jumping 61.9% on Monday.
• AquaVenture Holdings Ltd (NYSE: WAAS) fell 9.6% to $17.04 after reporting a 4.1 million share common stock offering.
• Rayonier Advanced Materials Inc. (NYSE: RYAM) dropped 8.4% to $5.27.
• DaVita Inc. (NYSE: DVA) fell 8.2% to $50.94.
• Corindus Vascular Robotics, Inc. (NYSE: CVRS) shares declined 8% to $3.1650.
• CannTrust Holdings Inc. (NYSE: CTST) tumbled 8% to $3.5229. Roth Capital downgraded CannTrust from Buy to Neutral.
• Karyopharm Therapeutics Inc. (NASDAQ: KPTI) dropped 7.8% to $7.69.
• Tenneco Inc. (NYSE: TEN) dipped 7.2% to $9.22.
• NOW Inc. (NYSE: DNOW) tumbled 6.8% to $13.48.
• Gold Fields Limited (NYSE: GFI) shares fell 5.4% to $5.14 after rising 4.83% on Monday.
• Fresenius Medical Care AG & Co. KGaA (NYSE: FMS) fell 5.1% to $37.45.
• Alcoa Corporation (NYSE: AA) dropped 4% to $21.42. Macquarie downgraded Alcoa from Outperform to Neutral.