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

Microsoft (MSFT) was up 1.2% in pre-bell activity, after a 2.8% increase from the previous session.

IBM (IBM) advanced by 0.7% in premarket hours, following a 2.7% decline at Wednesday's close.

SpaceX (SPCX) was 0.5% higher premarket, swinging from a 0.6% decline from Wednesday's session.

AST SpaceMobile (ASTS) fell by 9.5% hours before market open, following a 3.7% decline at Wednesday's close. AST SpaceMobile priced a private offering of $1 billion aggregate principal amount of 1.625% convertible senior notes due 2034.

Sandisk (SNDK) was down 6.5% pre-bell, after closing Wednesday with an 8.1% decline.

Taiwan Semiconductor Manufacturing (TSM) declined by 4% pre-bell, following a 0.2% fall from Wednesday's session.

Micron Technology (MU) was 3.5% lower premarket, after an 8% fall from the previous session.

Nvidia (NVDA) was down 1.2% pre-bell, swinging from a 0.3% increase at Wednesday's close.