The most-talked-about stocks in the Reddit subforum Wallstreetbets were mostly higher hours before Monday's opening bell.

Palantir Technologies (PLTR) rose by 5.1% in premarket activity, swinging from a 10.6% decline at Friday's close.

Robinhood Markets (HOOD) was up 2.8% in pre-bell hours, reversing a 1.8% decline from Friday's session.

Alphabet (GOOG) advanced by 1.4% pre-bell, after a 2.2% increase at Friday's close.

Advanced Micro Devices (AMD) was 1.1% higher in premarket activity, following a 0.1% increase from Friday's session.

Nvidia (NVDA) was up 0.7% in premarket hours, following a 1.7% increase from the previous session.

UnitedHealth Group (UNH) was 0.3% higher hours before market open, after a 2.1% increase from the previous session.

Circle Internet Group (CRCL) was down 3.2% premarket, following a 15.5% fall at Friday's close.

Tesla (TSLA) declined by 1.1% pre-bell, after closing Friday with a 1.4% decline.