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

Advanced Micro Devices (AMD) rose by 2.8% in pre-bell hours, swinging from a 2% fall at Tuesday's close. The company issued an upbeat fiscal Q2 revenue outlook at the midpoint, while the chipmaker reported better-than-expected results for the preceding three-month period.

Tesla (TSLA) advanced by 1.4% premarket, after closing Tuesday with a 1.8% decline.

Apple (AAPL) was up 1% pre-bell, following a 0.2% fall in the previous session.

DTE Energy (DTE) advanced by 0.7% premarket, following a 0.7% increase in the previous session.

Nvidia (NVDA) was 0.3% higher in premarket activity, reversing a 0.3% fall at Tuesday's close.

Palantir Technologies (PLTR) slightly advanced hours before market open, swinging from a 12% slide at Tuesday's close.

Super Micro Computer (SMCI) declined by 4.8% pre-bell, swinging from a 2.4% increase at Tuesday's close.

Hims & Hers Health (HIMS) fell by 3.5% premarket, after closing Tuesday with an 18% increase.