Gainers: NanoViricides, Inc. (NNVC) +89%.Communications Systems, Inc. (JCS) +74%.Amyris, Inc. (AMRS) +41%.Hovnanian Enterprises, Inc. (HOV) +37%.Rocket Companies, Inc. (RKT) +36%.Perion Network Ltd. (PERI) +27%.The OLB Group, Inc. (OLB) +25%.Novan, Inc. (NOVN) +21%.Aemetis, Inc. (AMTX) +21%.Super League Gaming, Inc. (SLGG) +20%.Losers: FibroGen, Inc. (FGEN) -29%.Inseego Corp. (INSG) -27%.3D Systems Corporation (DDD) -16%.Novavax, Inc. (NVAX) -15%.Switch, Inc. (SWCH) -15%.Lemonade, Inc. (LMND) -15%.C3.ai, Inc. (AI) -14%.Ferroglobe PLC (GSM) -14%.AppFolio, Inc. (APPF) -14%.Aligos Therapeutics, Inc. (ALGS) -13%.

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DDD, NVAX, LMND and RKT among midday movers