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

SpaceX (SPCX) rose 1.5% premarket, swinging from a 13.6% fall at Wednesday's close.

Alphabet (GOOG) advanced by 0.6% pre-bell, following a 4.1% decline from the previous session.

Nvidia (NVDA) was up 0.2% hours before market open, after closing Wednesday with a 3.4% increase.

AppLovin (APP) fell by 16.5% premarket, after a 0.5% decline from the previous session. The company reported Q2 revenue that fell short of market expectations.

Western Digital (WDC) declined by 14.6% pre-bell, following a 5.4% fall from Wednesday's session.

Sandisk (SNDK) was down 9.2% in premarket hours, after a 5.4% fall from the previous session.

Micron Technology (MU) fell by 3.7% in pre-bell activity, reversing a slight increase from Wednesday's session.

Advanced Micro Devices (AMD) was 1.1% lower premarket, after a 7% fall from the previous session.