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

Sandisk (SNDK) rose by 2.1% in premarket activity, after a 7.2% fall from the previous session.

Micron Technology (MU) was up 1.3% pre-bell, swinging from a 2.7% decline at Tuesday's close.

Nvidia (NVDA) advanced by 0.7% premarket, following a 0.8% fall from the previous session.

Hims & Hers Health (HIMS) was up 0.7% in pre-bell hours, after a 10.8% decline at Tuesday's close.

Microsoft (MSFT) was 0.3% higher premarket, reversing a 0.1% decline from Tuesday's session.

Robinhood Markets (HOOD) fell by 7.1% hours before market open, after a 1.1% decline from the previous session. Robinhood Markets reported a decline in Q4 net income, while sales missed market expectations.

Tesla (TSLA) was 0.4% lower in pre-bell activity, swinging from a 1.9% increase at Tuesday's close.

Reddit (RDDT) declined by 0.1% premarket, after closing Tuesday with a 5.8% rise.