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

Strategy (MSTR) advanced by 4.3% premarket, reversing a 1.7% decline at Friday's close.

Robinhood Markets (HOOD) rose by 2.2% pre-bell, following a 3.1% increase from the previous session.

Tesla (TSLA) was 1.3% higher in premarket activity, after closing Friday with a 2.3% increase.

UnitedHealth Group (UNH) was up 1% in pre-bell hours, following a 2.5% increase from Friday's session.

AST SpaceMobile (ASTS) was 0.1% higher premarket, swinging from a 2.3% decline at Friday's close.

Advanced Micro Devices (AMD) declined by 1.7% hours before market open, reversing a 0.2% increase from the previous session.

Nvidia (NVDA) was 0.9% lower in premarket hours, swinging from a 1.1% increase at Friday's close.

Palantir Technologies (PLTR) was down 0.1% pre-bell, following a 2.6% increase from the previous session.