KOSS - GME SAVA AMC and OCGN among midday movers

Gainers: Cassava Sciences (SAVA) +126%.Ocugen (OCGN) +75%.American Resources (AREC) +51%.Lizhi (LIZI) +46%.Aeterna Zentaris (AEZS) +35%.Moleculin Biotech (MBRX) +35%.Holicity (HOL) +35%.Prothena (PRTA) +32%.TETRA Technologies (TTI) +32%.Artelo Biosciences (ARTL) +29%.Losers: GameStop (GME) -46%.Immunovant (IMVT) -42%.AMC Entertainment (AMC) -38%.Express (EXPR) -36%.Koss (KOSS) -35%.Comstock Mining (LODE) -34%.MingZhu Logistics (YGMZ) -33%.Naked Brand (NAKD) -32%.Avino Silver & Gold Mines (ASM) -23%.Pitney Bowes (PBI) -22%.

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GME, SAVA, AMC and OCGN among midday movers