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

SoundHound AI (SOUN) shares were up 6.1% in pre-bell hours, following a 7.5% increase from the previous session.

Oklo (OKLO) stock was 5.6% higher premarket, reversing a 3.8% decline from the previous session. Oklo said it signed a non-binding Master Power Agreement with Switch to develop, construct, and operate 12 gigawatts of Aurora powerhouse projects through 2044.

Archer Aviation (ACHR) shares were up 5.6% pre-bell, swinging from a 1.5% decline at Wednesday's close.

Tesla (TSLA) stock was 2.4% higher in premarket hours, after closing Wednesday with an 8.3% decline.

Nvidia (NVDA) was 2.2% higher in pre-bell activity, swinging from a 1.1% fall at Wednesday's close.

DTE Energy (DTE) shares were up 0.8% premarket, following a 2.6% decline from the previous session.

Advanced Micro Devices (AMD) stock was 0.7% higher hours before market open, swinging from a 2.9% fall at Wednesday's close.

Bucking the trend, Micron Technology (MU) shares were down 14% in pre-bell activity, following a 4.3% decline from the previous session. Micron reported overnight fiscal Q2 non-GAAP earnings and revenue guidance that trailed analysts' expectations.