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

Wendy's (WEN) advanced by 14.5% in pre-bell activity, following a 1.4% increase from Tuesday's session.

Micron Technology (MU) rose by 3.6% in premarket hours, swinging from a 13.2% fall from the previous session.

Sandisk (SNDK) was 2.7% higher premarket, following a 13.6% fall at Tuesday's close.

Nvidia (NVDA) advanced by 0.7% in hours before market open, swinging from a 4.1% decline at Tuesday's close.

Tesla (TSLA) rose by 0.6% premarket, following a 5.8% fall from the previous session.

SpaceX (SPCX) was up 0.2% pre-bell, after closing Tuesday with a 1% increase.

ServiceNow (NOW) declined by 0.8% in premarket hours, following a 3.2% increase from the previous session.

Microsoft (MSFT) was 0.4% lower premarket, swinging from a 1.8% increase at Tuesday's close.