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

Robinhood Markets (HOOD) rose by 0.9% pre-bell, swinging from a 4.8% fall at Wednesday's close.

UnitedHealth Group (UNH) was up 0.9% hours before market open, following a 3.9% rise at Wednesday's close.

Reddit (RDDT) advanced by 0.5% in premarket activity, after closing Wednesday with a 4.8% increase.

Rocket (RKT) was up 0.5% in pre-bell hours, following a 7.4% rise at Wednesday's close.

Tesla (TSLA) was 0.4% higher premarket, reversing a 0.4% decline from Wednesday's session.

Advanced Micro Devices (AMD) was 0.6% lower pre-bell, swinging from a 5.4% increase from the previous session.

Strategy (MSTR) declined by 0.6% premarket, following a 1.1% fall from the previous session.

Nvidia (NVDA) was down 0.2% in premarket hours, after a 0.8% decline from Wednesday's session.