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

Alphabet (GOOG) advanced by 1.6% in pre-bell hours, reversing a 0.3% decline from the previous session.

Nebius Group (NBIS) rose by 1% pre-bell, after closing Tuesday with a 5.3% increase.

Nvidia (NVDA) was up 1% premarket, swinging from a 2.8% fall at Tuesday's close.

Tesla (TSLA) advanced by 0.9% pre-bell, after a 1.9% decline from the previous session.

Amazon.com (AMZN) was 0.6% higher in premarket activity, following a 4.4% fall from Tuesday's session.

Meta Platforms (META) advanced by 0.3% hours before market open, after a 0.7% decline from the previous session.

Antero Midstream (AM) was down 0.9% premarket, reversing a 0.2% increase from Tuesday's session.

Strategy (MSTR) declined by 0.7% pre-bell, swinging from a 5.8% increase at Tuesday's close.