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

Sandisk (SNDK) was up 2.3% pre-bell, swinging from a 3.5% decline at Thursday's close.

Advanced Micro Devices (AMD) was 2.2% higher in pre-bell hours, following a 2.4% rise at Thursday's close.

BlackBerry (BB) was up 2.1% premarket, after closing Thursday with a 4.2% increase.

Nebius Group (NBIS) rose 2% in pre-bell activity, after a 7.4% increase from Thursday's session.

Micron Technology (MU) advanced by 1.3% premarket, following a 0.8% increase from the previous session.

Oracle (ORCL) was up 0.3% pre-bell, swinging from a 3.5% decline at Thursday's close.

Alphabet (GOOG) rose 0.3% premarket, following a 1.2% increase from the previous session.

Meta Platforms (META) was 0.2% higher hours before market open, after a 4.5% rise at Thursday's close.