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

Super Micro Computer (SMCI) fell by 15.6% premarket, following a 3.4% decline from the previous session. The company lowered its fiscal Q3 non-GAAP EPS guidance.

Snap (SNAP) was down almost 14% pre-bell, reversing a 2.9% increase from Tuesday's session. The company reported a narrower Q1 loss but did not issue a formal Q2 financial guidance due to uncertain macroeconomic conditions.

Nvidia (NVDA) declined by 1.9% in premarket hours, reversing a 0.3% increase at Tuesday's close.

Tesla (TSLA) was 1.3% lower in pre-bell activity, swinging from a 2.2% increase at Tuesday's close.

Amazon.com (AMZN) declined by 1% premarket, following a 0.2% fall from the previous session.

SoFi Technologies (SOFI) was down 0.5% hours before market open, reversing its 0.5% increase from the previous session.

United Parcel Service (UPS) was 0.1% lower premarket, after closing Tuesday with a 0.4% decline.

Hims & Hers Health (HIMS) advanced by 1.3% pre-bell, following a 23% rise at Tuesday's close.