The most-talked-about stocks in the Reddit subforum Wallstreetbets were mostly higher hours before Monday's opening bell.
Opendoor Technologies (OPEN) rose by 14.8% pre-bell, after a 14.1% increase at Friday's close.
Tesla (TSLA) advanced by 2.3% in pre-bell hours, reversing a 1.8% decline from the previous session.
Advanced Micro Devices (AMD) was 2.2% higher premarket, swinging from a 2.6% fall at Friday's close.
Palantir Technologies (PLTR) was up 2.1% in pre-bell activity, following a 2.6% fall from the previous session.
UnitedHealth Group (UNH) advanced by 2.1% in premarket hours, swinging from a 4.7% decline at Friday's close.
Amazon.com (AMZN) rose by 1.9% pre-bell, swinging from an 8.3% decline at Friday's close.
Nvidia (NVDA) was 1.2% higher hours before market open, following a 2.3% decline at Friday's close.
Antero Midstream (AM) was down 0.2% pre-bell, swinging from a 1% increase at Friday's close.