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

Sellas Life Sciences Group (SLS) advanced by 1.6% in pre-bell activity, following a 15% rise at Friday's close.

DTE Energy (DTE) was up 1.2% premarket, swinging from a 2.1% decline in the previous session.

Strategy (MSTR) was 0.8% higher hours before market open, after closing Friday with a 6.1% increase.

Nvidia (NVDA) was up 0.1% premarket, after a 1% drop in the previous session.

Applied Optoelectronics (AAOI) was down 13% pre-bell, following a 3.3% fall at Friday's close.

Sandisk (SNDK) fell by 5% in premarket activity, after a 0.3% decline in the previous session.

SpaceX (SPCX) was 2% lower in pre-bell hours, swinging from a 2.2% increase at Friday's close.

Micron Technology (MU) declined by 3.4% pre-bell, following a 0.8% fall in the previous session.