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

Sandisk (SNDK) declined by 3.5% in premarket activity, after a 3.5% fall from the previous session.

Micron Technology (MU) fell by 2.5% hours before market open, following a 3.4% decline from Wednesday's session.

Rocket Lab (RKLB) was down nearly 2% premarket, after closing Wednesday with a 10.3% increase.

Advanced Micro Devices (AMD) was 1.5% lower pre-bell, swinging from a 7.3% increase at Wednesday's close.

Arm Holdings (ARM) fell by 1.5% premarket, following a 16.4% rise from Wednesday's session.

Tesla (TSLA) was down 1.2% in pre-bell activity, after reversing a 0.8% increase from the previous session.

Nvidia (NVDA) declined by 1% premarket, following a 2% increase from Wednesday's session.

Microsoft (MSFT) was down 0.4% premarket, after a 0.5% decline from the previous session.