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

Tesla (TSLA) advanced by 4.5% in pre-bell hours, after a 1.3% fall from the previous session. Tesla has unveiled its new Roadster capable of flight using cold-gas thrusters and showed the car reach 60 miles per hour from a standstill in under one second.

SpaceX (SPCX) rose by 2.1% in premarket hours, swinging from a 2.3% decline at Thursday's close.

Nvidia (NVDA) was up 0.3% pre-bell, after closing Thursday with a 1.8% fall.

CoreWeave (CRWV) fell by 3.9% in premarket activity, following a 5.9% rise at Thursday's close.

Nebius Group (NBIS) declined by 1.8% hours before market open, reversing a 1.3% increase from Thursday's session.

Micron Technology (MU) was down 1.6% premarket, swinging from a 1.9% increase at Thursday's close.

Advanced Micro Devices (AMD) fell by 1.3% pre-bell, after a 1.5% decline from the previous session.

Taiwan Semiconductor Manufacturing (TSM) was 0.5% lower in premarket hours, following a 1.8% fall from Thursday's session.