ZIVO - SD TELL and CEI among pre market gainers

Sonoma Pharmaceuticals (NASDAQ:SNOA) +70% on product launch in U.S. and Europe Planet Green (NYSE:PLAG) +30%. ZIVO Bioscience (NASDAQ:ZIVO) +20%. Frequency Electronics (NASDAQ:FEIM) +17% wins contract from the Office of Naval Research for atomic clock development AGM Group (NASDAQ:AGMH) +13%. Harpoon Therapeutics (NASDAQ:HARP) +10%  and Puma Bio shares gain on Citi upgrade China Online Education (NYSE:COE) +7% on Q2 earnings. Medigus (NASDAQ:MDGS) +4% Jeff Brands to enter the logistic warehouses market in the U.S. to Support Amazon FBM sellers E-commerce growth SandRidge Energy (NYSE:SD) +7%. iPower  (NASDAQ:IPW) +7% on Q4 earnings. Sasol  (NYSE:SSL) +7%. Stealth BioTherapeutics (NASDAQ:MITO) +3% on positive elamipretide data in pediatric cardiology Gogo GOGO +6% after company lifts long-term financial targets Camber Energy (NYSE:CEI) +6%. Tellurian (NASDAQ:TELL) +6%. Comstock Resources, Inc. (NYSE:CRK) +6%. NeuroBo Pharmaceuticals, Inc. (NASDAQ:NRBO) +5%.

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SD, TELL and CEI among pre market gainers