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

SELLAS Life Sciences Group (SLS) rose 2% pre-bell, after a 13.2% decline from the previous session.

Nvidia (NVDA) was 0.5% higher premarket, swinging from a 4.6% fall at Friday's close.

Broadcom (AVGO) was up 0.2% hours before market open, following a 0.7% decline from Friday's session.

Sandisk (SNDK) advanced by 0.1% in pre-bell activity, after closing Friday with a slight increase.

Tesla (TSLA) fell by 0.5% pre-bell, following a 1.7% fall at Friday's close.

Micron Technology (MU) was down 0.4% in premarket hours, after a 0.3% decline from the previous session.

Marvell Technology (MRVL) was 0.4% lower premarket, following a 0.3% fall from Friday's session.

Apple (AAPL) was marginally declining pre-bell, swinging from a 1.6% increase at Friday's close.