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

Celsius Holdings (CELH) rose by 32% in premarket hours, reversing a 2.2% decline from the previous session. Celsius Holdings reported a beat on Q4 earnings and sales and announced the acquisition of Alani Nutrition.

Palantir Technologies (PLTR) advanced by 1.2% in pre-bell activity, swinging from a 5.2% fall at Thursday's close.

Super Micro Computer (SMCI) was up 1.2% premarket, reversing a 1.6% decline from the previous session.

Nebius Group (NBIS) was 1.2% higher pre-bell, after closing Thursday with a 3.2% increase.

Reddit (RDDT) advanced by 0.8% in premarket activity, swinging from a 7.5% decline at Thursday's close.

Walmart (WMT) was up 0.3% hours before market open, following a 6.5% fall at Thursday's close.

Rivian Automotive (RIVN) declined by 3.7% pre-bell, after closing Thursday with a 2.3% fall.

Nvidia (NVDA) was down 0.4% premarket, swinging from a 0.6% increase at Thursday's close.