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

Meta Platforms (META) was up 7.8% premarket, reversing a 0.6% decline from the previous session. Meta Platforms reported a stronger-than-expected increase in Q4 earnings and revenue.

Sandisk (SNDK) was 2.4% higher in pre-bell hours, after closing Wednesday with a 9.6% rise.

Micron Technology (MU) rose by 1.5% pre-bell, following a 6.1% increase from Wednesday's session.

Tesla (TSLA) advanced by 2.9% hours before market open after a 0.1% increase at Wednesday's close. Tesla Q4 earnings and sales came in above analyst expectations.

Carvana (CVNA) was 0.7% higher in premarket hours, swinging from a 14.2% fall from Wednesday's session.

Robinhood Markets (HOOD) was up 0.3% pre-bell, swinging from a 1.8% decline at Wednesday's close.

Microsoft (MSFT) fell by 6.8% in pre-bell activity following a 0.2% increase from the previous session.

UnitedHealth Group (UNH) was down 0.5% premarket, after a 4% increase at Wednesday's close.