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

Reddit (RDDT) advanced by 11% pre-bell, reversing a 1.1% decline from the previous session. Reddit reported higher Q4 net income and revenue year over year late Thursday.

Strategy (MSTR) rose by 6.4% in premarket hours, swinging from a 17% fall at Thursday's close.

Robinhood Markets (HOOD) was up 5.6% pre-bell, following a 9.9% drop in the previous session.

Micron Technology (MU) was 4.2% higher in pre-bell activity, after closing Thursday with a 0.9% gain.

Nvidia (NVDA) advanced by 3.1% premarket, reversing a 1.3% decline in the previous session.

Microsoft (MSFT) was 1.6% higher hours before market open, after a 5% drop Thursday.

Amazon.com (AMZN) shares fell by 7.8% pre-bell, following a 4.4% decline at Thursday's close. Amazon reported a Q4 earnings miss overnight.

Alphabet (GOOG) was down 0.9% in premarket activity, after a 0.6% decline from the previous session.