Opendoor Technologies (OPEN) shares were up 32% in recent Monday premarket activity, extending Friday's rally.
Aveanna Healthcare (AVAH) stock rose 14% after Jefferies upgraded the company to buy from hold but trimmed its price target to $6 from $6.25.
Block (XYZ) stock was nearly 10% higher after S&P Global's (SPGI) division S&P Dow Jones Indices said Friday that Block will join the S&P 500 index, effective Wednesday.
Autolus Therapeutics (AUTL) shares climbed 9% after the company said its Aucatzyl has received marketing authorization from the European Commission to treat adults with relapsed or refractory B-cell precursor acute lymphoblastic leukemia.
Verizon Communications (VZ) shares were up 4.6% after the company reported higher Q2 adjusted earnings and operating revenue from a year earlier.