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

Amazon.com (AMZN) advanced by 13.1% pre-bell, following a 3.9% rise at Thursday's close. Amazon.com reported higher Q2 earnings and revenue.

Nebius Group (NBIS) was 9.3% higher in premarket activity, following a 27.1% increase from the previous session.

Sandisk (SNDK) was up 5.1% in pre-bell activity, after a 26% increase from Thursday's session.

Micron Technology (MU) rose by 4% premarket, after an 18.4% increase from the previous session.

Meta Platforms (META) was 1.8% higher in premarket hours, swinging from an 8% fall at Thursday's close.

Reddit (RDDT) declined by 10.6% pre-bell, reversing a slight increase from Thursday's session.

Apple (AAPL) fell by 7.3% hours before market open, following a 1.4% decline from the previous session.

Microsoft (MSFT) was down 0.7% in premarket hours, swinging from a 15.5% rise at Thursday's close.